# Lifestyle Engineering: Floor Expenses, Maximum Optionality

Target window: 2026-05-20 through 2029-05-20. Goal: floor recurring expenses to $1,500-$2,500/mo all-in, paired with a $250k gross income target by year three. The thesis is simple: at that ratio, the savings rate dominates the strategy. The math, not the income, is the real lever.

---

## 1. The Economics: Why This Matters

Three honest numbers. Assume $250k gross from year three onward, ~22% effective federal tax (FEIE in play where possible, S-corp election on 1099 income), and 7% real return on invested savings.

### Net worth curve at three expense tiers

Net of federal tax, after FEIE and reasonable retirement shelters, take-home lands at roughly $185k on $250k gross for a non-resident or low-tax-state citizen. Annual surplus = take-home minus living expenses. Compound at 7% real.

| Year | $1,500/mo ($18k/yr) | $3,000/mo ($36k/yr) | $6,000/mo ($72k/yr) |
|------|---------------------|---------------------|---------------------|
| 2027 (Y1, $60k income, ~$48k take-home) | $30k saved | $12k saved | -$24k (deficit) |
| 2028 (Y2, $130k income, ~$103k take-home) | $116k cumulative | $80k | $25k |
| 2029 (Y3, $250k income, ~$185k take-home) | $295k cumulative | $232k | $138k |
| 2030 | $493k | $383k | $214k |
| 2031 | $704k | $542k | $292k |
| 2032 (5yr from now) | $930k | $710k | $371k |

The $1,500/mo tier hits $1M in year six. The $6,000/mo tier needs over a decade to get there with the same income. That spread is the entire point of this document.

**Tax planning matters more than expense floor.** Moving from a 9% state income tax state to 0% on $250k of income is $22,500/yr, the same as removing $1,875/mo from the spend column. Pair the two and the curve bends faster.

---

## 2. Travel

### Flight booking stack
- **Google Flights** (https://www.google.com/flights): baseline, calendar view, price tracking, explore map.
- **ITA Matrix** (https://matrix.itasoftware.com): the engine under Google Flights, exposes routing codes, multi-city construction, fare bucket inspection. Power-user tool.
- **Kiwi.com** (https://www.kiwi.com): finds combinations no airline alliance will sell you, including separate-ticket itineraries. Kiwi Guarantee is real but pricey.
- **Skiplagged** (https://skiplagged.com): hidden-city ticketing. Works, violates airline contracts, only do it one-way with carry-on.
- **Hopper** (https://hopper.com): mobile-first prediction. Useful as a second opinion, not as a buyer.
- **Going** (formerly Scott's Cheap Flights, https://www.going.com): mistake-fare and deep-discount alerts, $49-$199/yr. One $700 transatlantic round trip pays for the whole subscription.
- **Point.me** (https://point.me, $129/yr): the only good award-search tool. Searches partner availability across all major programs.
- **Seats.aero** (https://seats.aero, $7-$10/mo): faster, broader award search than point.me for power users.
- **AwardWallet** (https://awardwallet.com): tracks miles across all programs.

The AI-era of fare search is shifting fast. Treat search tool quality as something to re-check every six months.

### Frequent-flier alliance: pick one, stack hard

For a US-based traveler, the three alliances roughly map to:

| Alliance | US anchor | Strength | Weakness |
|----------|-----------|----------|----------|
| **Star Alliance** | United MileagePlus | Widest network (28 carriers), Lufthansa/ANA/Singapore for premium award space | United mileage devaluations frequent |
| **OneWorld** | American AAdvantage, Alaska Mileage Plan | Best for South America (LATAM), Asia via JAL/Cathay, partner with British Airways and Qatar | American often has worst award availability |
| **SkyTeam** | Delta SkyMiles | Excellent product (Delta One), partner with Korean/Air France/KLM | SkyMiles has no published award chart, dynamic pricing |

Recommendation for Kris: **OneWorld via Alaska Mileage Plan**. Alaska partners with American, Cathay, JAL, Qatar, British Airways, Iberia, and more without being inside American's dynamic-pricing mess. Cathay business to Asia for 50k miles one-way is still a thing. Backup: United MileagePlus for the West Coast departures and the Star Alliance partner sprawl.

Pick one, run all credit card spend through it, and don't dilute across three programs.

### Credit card travel hacking (US citizen, 20s)

The realistic stack for someone with a 750+ FICO and a $60-250k income:

| Card | Annual fee | Signup bonus (typical 2026) | Key benefit |
|------|------------|------------------------------|-------------|
| **Chase Sapphire Preferred** | $95 | 60-80k UR | Entry-level, 1.25x redemption on travel via portal |
| **Chase Sapphire Reserve** | $795 | 100k UR | Priority Pass, $300 travel credit, points value |
| **Amex Platinum** | $695 | 80-150k MR | Centurion lounges, $200 hotel credit, $200 airline credit (gameable) |
| **Amex Gold** | $325 | 60-90k MR | 4x dining and groceries, $120 Uber credit |
| **Capital One Venture X** | $395 | 75k+ miles | Priority Pass, $300 Cap One Travel, anniversary 10k miles |
| **Chase Ink Business Preferred** | $95 | 90-120k UR | Best business card for spend bonus, requires LLC/sole prop |
| **Bilt Mastercard** | $0 | Variable | Pays rent in points, no annual fee, transfers to most programs |

Realistic extraction: $1,500-$3,000/yr in net value after fees, assuming you rotate signup bonuses every 18-24 months and meet minimum spend organically. The honest time cost is 3-5 hours/month if you optimize, less if you set and forget. Sources: r/churning (https://www.reddit.com/r/churning), Doctor of Credit (https://doctorofcredit.com), Frequent Miler (https://frequentmiler.com).

Critical rule: **Chase 5/24**. Chase will deny you if you've opened 5+ personal cards in 24 months across any issuer. Open Chase cards first, then Amex, then everything else.

### US passport: visa-on-arrival / visa-free targets

Henley Passport Index 2026 puts the US around 180+ destinations visa-free or on-arrival. For the geographies Kris cares about:

| Country | US passport access | Stay | Notes |
|---------|---------------------|------|-------|
| Chile | Visa-free | 90 days | Reciprocity fee abolished |
| Japan | Visa-free | 90 days | Tourist; LTR available |
| South Korea | K-ETA pre-approval | 90 days | https://www.k-eta.go.kr |
| Singapore | Visa-free | 90 days | |
| Taiwan | Visa-free | 90 days | |
| Thailand | Visa exemption | 60 days (extended in 2024) | LTR and DTV available |
| Vietnam | E-visa | 90 days (multi-entry as of 2023) | https://evisa.xuatnhapcanh.gov.vn |
| Indonesia (Bali) | Visa-on-arrival | 30+30 days | B211A long-stay available |
| Malaysia | Visa-free | 90 days | MM2H for longer |
| Georgia | Visa-free | 365 days | Best in class for nomads |
| Armenia | Visa-free | 180 days | |
| Turkey | E-visa | 90 days in 180 | https://www.evisa.gov.tr |
| UAE | Visa-on-arrival | 30 days, extendable | DNV available |
| Mexico | FMM tourist | 180 days (officer discretion) | Temporary Resident easy |
| Colombia | Visa-free | 90+90 days | DNV available |
| Argentina | Visa-free | 90 days | Reciprocity fee paused |
| Brazil | E-visa required | 90 days | DNV available |
| Portugal/Spain/Schengen | Visa-free | 90 in 180 | Watch the Schengen clock |

Schengen 90/180 is the single most important calendar rule for European travel. Track with https://www.schengencalculator.com.

### Baggage philosophy: one bag, no checked

The r/OneBag community (https://www.reddit.com/r/onebag) has converged on a few defensible packs. The point: never check a bag, never wait at carousel, lose nothing, fly any airline, walk from any station, no logistics tax.

| Bag | Capacity | Price | Best for |
|-----|----------|-------|----------|
| **Tom Bihn Synik 30** | 30L | $349 | Organization fiends, lifetime build |
| **Goruck GR1** | 21-26L | $325-$395 | Minimalists, indestructible, ugly enough to deter theft |
| **Aer Travel Pack 3 Small** | 28L | $279 | Best clamshell, sleek for cities |
| **Peak Design Travel 30L** | 30L | $300 | Photographers, expandable |
| **Cotopaxi Allpa 35L** | 35L | $200 | Budget option, durable |

Packing cubes: Eagle Creek Pack-It Specter or Peak Design. Three cubes (tops, bottoms, underwear) ends the daily packing decision. Compression cubes save 30% volume.

Recommended kit: 7 shirts, 3 bottoms, 7 underwear, 7 socks, packable down jacket, packable rain shell, one pair of shoes plus sandals, toiletries in silicone bottles, electronics pouch. That's about 18-22 lbs, fits 26L easily.

### Sleep en route
- **Jet lag protocol**: start shifting sleep by 30 min/day three days before flight in the direction of destination. On-flight: sleep on destination clock, not departure clock.
- **Melatonin timing**: 0.3-0.5 mg (not the 3-5 mg sold OTC), taken at destination bedtime, every night for the first 4-5 days. Higher doses cause grogginess and don't help phase shifting.
- **Fasting trick**: the Argonne anti-jet-lag diet (16h fast, eat breakfast at destination time on arrival) has weak evidence but anecdotally works. Easier: just eat on destination schedule the day you arrive, regardless of hunger.
- **Light exposure**: bright light on arrival morning, dim light evening. The single most powerful zeitgeber.

### Long-haul economy survival kit
- **Headphones**: Soundcore Q45 ($80) or Soundcore Space Q45, around 90% of the Sony XM5 experience at 20% of the price. AirPods Pro 2 ($249) if iPhone integration matters.
- **Neck pillow**: Trtl Pillow ($35), not the inflatable horseshoe garbage.
- **Eye mask**: Manta Sleep ($35), velcro adjustable, zero light leak.
- **Compression socks**: prevents DVT, available everywhere for $15.
- **Wired backup earbuds**: airlines still hand out analog jacks, Bluetooth runs out of battery.

### Pricing tactics
- **App pricing vs in-person**: ride-hails (Uber, Grab, Bolt) often cheaper than haggled taxis. Local food delivery apps often cheaper than walking into the restaurant in tourist areas.
- **Bargaining**: SE Asia and Latin America markets, yes. Don't bargain in Japan, Korea, or Western Europe; it is rude and pointless.
- **Currency tricks**: always pay in local currency, never accept "dynamic currency conversion" at terminals. The vendor's exchange rate is always worse than your card's.

---

## 3. Security

### Physical security

#### Country risk
- **OSAC** (https://www.osac.gov) publishes Country Security Reports for free, by US embassy and consulate. The single best public-source threat read.
- **US State Department Travel Advisories** (https://travel.state.gov): Level 1-4. Level 3-4 means insurance gets expensive and embassies will roll their eyes.
- **Specific 2026 cautions for US passport holders**:
  - **Russia and Belarus**: do not enter. Wrongful detention risk has been state-coded.
  - **China (mainland)**: exit ban risk for anyone with mainland business ties, dual citizenship ambiguity, or social media history. PRC has used exit bans against US citizens repeatedly post-2018.
  - **Iran, Venezuela, Myanmar, North Korea**: do not enter.
  - **Parts of Mexico**: state-by-state. CDMX, Yucatan, Oaxaca, Querétaro are fine. Sinaloa, Tamaulipas, Michoacán are not.
  - **Haiti, Sudan, Libya, Yemen**: don't.

#### Hotel / Airbnb hardening
Threat model is opportunistic theft and crime of opportunity, not nation-state surveillance. So:
- **Door wedge alarm**: $10 on Amazon, slides under door, screams if forced. Best single item.
- **Peephole cover**: $5 sticker, prevents external optics. Most hotel doors leak through the peephole.
- **Portable door lock** (Addalock, $25): adds a deadbolt to any inward-opening door.
- **Faraday pouch** for phones during sensitive meetings, $20.

#### EDC and weapons
- **Knife laws**: UK has the strictest, anything locking or over 3 inches is a problem. Japan: blade over 6cm is a crime. Most of Europe: 8cm or under, non-locking, generally OK as a tool.
- **Pepper spray**: legal in US (most states), banned in UK, Belgium, Denmark, Hungary, Norway, Poland; legal in some form in Canada (dog-spray loophole), Australia, Germany (animal-defense), Italy (under 20ml).
- **Legal alternatives**: tactical pen (Schrade SCPEN3, $15), monkey-fist keychain (most places), striking flashlight (Olight, Fenix).
- **Kubotan or Yawara**: cheap, useful, legal almost everywhere as a "key holder."

#### Cash strategy
- **Money belt** (Eagle Creek RFID, $25) holds passport, emergency $500-$1000 cash, backup card. Never your daily kit.
- **Decoy wallet**: cheap bifold with $30-$50 cash and an expired card. Hand this over in a mugging.
- **Customs declaration**: $10,000 USD or equivalent into/out of the US must be declared (FinCEN 105). Many countries: €10,000. Penalty for non-declaration: seizure plus criminal liability.

#### Travel insurance with extraction
| Provider | Coverage | Annual cost | Notes |
|----------|----------|-------------|-------|
| **World Nomads** | Standard travel + medical | $400-$900 | https://www.worldnomads.com, decent claims |
| **IMG Patriot Platinum** | Medical heavy | $500-$1200 | https://www.imglobal.com |
| **GeoBlue Trekker** | Medical, Blue Cross network abroad | $250-$600 | https://www.geobluetravelinsurance.com |
| **Global Rescue** | **Actual extraction**, medevac, security evac | $660-$1295/yr | https://www.globalrescue.com — separate from health insurance, pairs with it |
| **SafetyWing Nomad** | Health + travel | $504/yr ($42/mo, under 40) | https://safetywing.com |
| **Genki** | EU-style, no US coverage | €72/mo | https://genki.world |

Stack: SafetyWing or GeoBlue for routine + Global Rescue for the "get me out of here" case. About $1200/yr combined.

#### Embassy registration
**STEP program** (https://step.state.gov): free, US-only, registers your trip with the nearest embassy. They'll contact you in a crisis (earthquake, coup, mass-casualty event) and your family can reach you through them. Takes 5 minutes per trip. Just do it.

### Digital / opsec

#### Threat model: be honest
- **Nation-state**: if you're targeted by NSA / FSB / MSS, no consumer tooling saves you. Don't engineer for this unless you actually have a reason to.
- **Corporate / law enforcement**: realistic. VPN + encrypted comms + device hygiene defeats most.
- **Script kiddie / hotel WiFi snooping**: trivial. HTTPS-everywhere + VPN + no cleartext credentials = done.
- **Border / customs**: device search is the realistic threat. Plan for it.

#### Travel device hygiene
- **Dedicated travel laptop**: refurb ThinkPad X1 Carbon ($400-$700, Lenovo Outlet or eBay) or M1/M2 MacBook Air ($600-$800 refurb). Fresh OS, no sensitive data, no SSH keys to your home infra, no client work. Use Tailscale to reach STARGATE for anything sensitive.
- **Primary kit stays at home / on STARGATE**: workstation, archive, keys.
- **Full-disk encryption on**: LUKS (Linux), FileVault (Mac). Power off, not sleep, before crossing borders. Cold-boot attacks are real but rare.
- **CBP guidance**: https://www.cbp.gov/travel/cbp-search-authority. US citizens cannot be denied entry for refusing to unlock, but can have devices seized for forensic imaging (typically 5-30 days).
- **EFF border guide**: https://www.eff.org/wp/digital-privacy-us-border-2017. Old but still the canonical reference.

#### Crypto across borders
- Never carry hot wallet seed phrases in plaintext, on paper, or in any document on your devices.
- Use a passphrase (BIP39 25th word) so the seed alone is useless without the passphrase you carry mentally.
- Cold-storage seed split: SLIP-39 or Shamir Secret Sharing across two trusted locations.
- Hardware wallets in checked luggage are fine because they're useless without the seed.

#### VPN strategy
| Provider | Cost | Jurisdiction | Notes |
|----------|------|--------------|-------|
| **Mullvad** | €5/mo flat | Sweden (14-Eyes member, but doesn't log) | Account = 16-digit number, no email needed. Best privacy reputation. |
| **ProtonVPN** | $4-$10/mo | Switzerland | Excellent, ties to ProtonMail account |
| **iVPN** | $6/mo | Gibraltar | Similar privacy posture to Mullvad |
| **Self-hosted WireGuard on STARGATE** | $0 (you own it) | Wherever STARGATE lives | Doesn't anonymize you to outside observers, but encrypts the path |
| **Tailscale exit node on STARGATE** | Free (Tailscale plan) | US (your house) | Makes you appear US-based, useful for streaming, banking, IRS, brokerage |

Sweden being technically 14-Eyes-adjacent doesn't disqualify Mullvad in practice. Mullvad has been audited, has no-logs verified by raids and court orders, and accepts cash by mail. For maximum opsec from a non-14-Eyes provider, iVPN (Gibraltar) is the cleanest.

#### Yubikey hygiene
- **Two Yubikeys minimum**: one daily, one in a secure location (safe at home base). Add a third for travel kit if budget allows.
- **YubiKey 5C NFC** ($55): the right model for most work.
- **Pair to every primary account**: GitHub, Google, Cloudflare, Mercury, Schwab, Fidelity, Bitwarden/1Password, Proton, all of them.
- **Backup codes printed and stored separately** in case both keys die.

#### Communications
- **Signal** (https://signal.org): always-on default messenger. Real names use real phone numbers, which leaks metadata. Use Signal usernames (rolled out 2024) for non-trusted contacts.
- **SimpleX** (https://simplex.chat): no phone number, no identifier. Higher OPSEC, smaller network.
- **Briar** (https://briarproject.org): peer-to-peer, no servers, works offline over Bluetooth/WiFi. For protest, conflict, or full offline.
- **Wire / Threema**: secondary options. Threema is paid, Swiss, no phone number.

#### Email
- **ProtonMail** (https://proton.me): Swiss, end-to-end with other ProtonMail users, custom domain support. Bridge for IMAP integration.
- **Tutanota** (https://tutanota.com): German, full E2E, less polished. Important: Germany IS 14-Eyes. For maximum jurisdiction filter, ProtonMail > Tutanota.
- Self-hosted email: Stalwart (https://stalw.art) or Mailcow on STARGATE. Doable, painful, deliverability headaches.

#### Password manager
- **Vaultwarden** (https://github.com/dani-garcia/vaultwarden): self-hosted Bitwarden-compatible, runs on STARGATE in a single container. Best free option.
- **Bitwarden Premium** ($10/yr): hosted, fine.
- **1Password Family** ($60/yr): the polished option. Travel mode actually removes vaults from devices on demand.

#### SIM strategy
- **eSIM first** wherever supported. Burner-style eSIMs (Airalo, Holafly) are harder for an opportunistic observer to clone. Physical SIM swapping at a kiosk leaves more trail.
- **Use a "burner" SIM number for hotel WiFi captive portals**, not your primary line.

---

### Health

#### International medical insurance
| Plan | Cost (under 40) | Coverage | Best for |
|------|-----------------|----------|----------|
| **SafetyWing Nomad** | $42/mo | $250k lifetime, includes home country | Nomads on a budget |
| **IMG Global Medical Insurance** | $80-$150/mo | Up to $8M | Long-term expats |
| **Cigna Global** | $200-$400/mo | Comprehensive | Wants a "real" insurance experience abroad |
| **GeoBlue Xplorer** | $150-$300/mo | Blue Cross-affiliated network worldwide | US citizens who want US-style coverage abroad |

Most digital-nomad insurance is medical-only and lousy for chronic conditions (excludes pre-existing, low maternity coverage). Read the fine print.

#### Vaccinations
- **Yellow fever**: required for some African and South American countries, single dose lifelong. Get the ICVP certificate.
- **Typhoid**: oral or injection, recommended for SE Asia, Africa, parts of Latin America.
- **Hepatitis A/B**: 2-3 doses, lifelong. Just do it.
- **Rabies pre-exposure**: 3 doses, $800-$1200 cash. Worth it if going truly rural in Asia, Africa, or for cave biology / animal handling.
- **Japanese encephalitis**: rural Asia, monsoon season.
- **Cholera**: parts of Africa.
- **CDC Travel page**: https://wwwnc.cdc.gov/travel.

#### Pharmacies abroad
Most of Mexico, Thailand, Vietnam, Indonesia, Philippines, parts of Eastern Europe sell antibiotics, antifungals, and many other prescription-in-US drugs over the counter. Ethics aside, this is well-documented and used by US expats routinely. Do not self-prescribe broad-spectrum antibiotics; resistance and microbiome damage are real. For chronic-medication refills, prices are 10-30% of US pharmacy retail.

---

## 4. Multi-country Movement

### Schengen 90/180
The single hardest European constraint. You can stay in the Schengen Area a maximum of 90 days within any rolling 180. Once you hit 90, you must leave for 90 before returning. Plan accordingly. UK, Ireland, Albania, North Macedonia, Romania, Bulgaria (some still being absorbed), Georgia, Turkey, Cyprus, Croatia (Schengen as of 2023) are the "step out" options.

Calculator: https://www.schengencalculator.com.

### Digital Nomad Visa landscape, 2026

Verify per-country pages: rules change quarterly.

| Country | Visa name | Income req (USD equiv) | Duration | Fee | Tax | Outside 14-Eyes? |
|---------|-----------|-------------------------|----------|-----|-----|--------------------|
| **Portugal** | D8 Digital Nomad | $3,500/mo (4x min wage) | 1yr + renew, path to residency | €90 | NHR repealed 2024, IFICI replacement narrower | No (14-E) |
| **Spain** | DNV | $2,650/mo | 1yr + 3yr | €80 | 24% flat for first 4 years | No (14-E) |
| **Greece** | DNV | $3,500/mo | 1yr | €75 | Standard | No (14-E) |
| **Italy** | DNV (active 2024) | €28k/yr | 1yr | €116 | Standard | No (14-E) |
| **Croatia** | Temporary stay (digital nomad) | €2,500/mo | 1yr (cannot renew, must leave 6mo) | €60 | Not taxed | No |
| **Estonia** | DNV + e-Residency | €4,500/mo | 1yr | €100 | If <183 days, none | **NOT in 14-Eyes** |
| **Czech Republic** | Zivno freelance | $5,500 in savings | 1yr | $200 | 15-23% | No (14-E adjacent) |
| **Hungary** | White Card | €3,000/mo | 1yr + 1yr | €110 | Standard | Yes (NOT in 14-E) |
| **Malta** | Nomad Residence | €3,500/mo | 1yr + 3yr | €300 | 10% on foreign income | No (14-E adjacent) |
| **Cyprus** | DNV | €3,500/mo | 1yr + 2yr | €70 | Non-dom 60-day rule | No (14-E adjacent) |
| **Georgia** | Remotely from Georgia (visa-free) | None, just enter | 365 days visa-free | $0 | 1% for IE small business | **Yes** |
| **Costa Rica** | Rentista / DNV | $3,000/mo | 1yr + 1yr | $250 | Foreign income exempt | **Yes** |
| **Panama** | Friendly Nations | Job offer or $200k investment | Permanent residency | $2,500+ | Foreign income exempt | **Yes** |
| **Colombia** | M Visa (digital nomad) | $684/mo | 2yr | $230 | Foreign income exempt if <183 days | **Yes** |
| **Argentina** | DNV | Variable | 180 days + renew | $200 | Foreign income exempt for non-residents | **Yes** |
| **Brazil** | VITEM XIV | $1,500/mo | 1yr + 1yr | $100 | If >183 days, worldwide | **Yes** |
| **Mexico** | Temporary Resident | $2,700/mo (or $108k in savings) | 1-4yr | $350 | If non-resident, foreign income exempt | **Yes** |
| **UAE** | Virtual Work Visa | $3,500/mo | 1yr renewable | $611 | Zero income tax | **Yes** |
| **Indonesia (Bali)** | B211A then E33G remote worker | $60k/yr | 1-5yr | $1500+ | If <183 days, no tax | **Yes** |
| **Thailand** | DTV (Destination Thailand Visa, 2024) | $14k in savings | 5yr multi-entry, 180 days/visit | $500 | Foreign income only if remitted same year | **Yes** |
| **Thailand** | LTR | $80k income or $1M assets | 10yr | $1700 | 17% flat on Thailand income for some categories | **Yes** |
| **Malaysia** | DE Rantau | $24k/yr | 1yr + 1yr | $250 | Non-resident: only Malaysian-source | **Yes** |
| **Japan** | DNV (launched 2024) | ¥10M (~$66k) | 6 months, no renewal | ¥4000 | If <183 days, foreign income exempt | No (14-E adjacent, not member) |
| **South Korea** | F-1-D | $66k/yr | 1yr + 1yr | $90 | Non-resident exempt on foreign | No |
| **Taiwan** | Employment Gold Card | Variable, professional | 1-3yr | $300-$600 | Income split | **Yes** |

### Outside-14-Eyes nomad visas ranked for Kris

Based on the academia.md filter (outside US/UK/CA/AU/NZ/DK/FR/NL/NO/DE/BE/IT/ES/SE):

1. **Georgia (Remotely from Georgia / visa-free 365-day)** — best in class. No application required, Tbilisi has 1 Gbps internet widely, 1% small-business tax, cost of living is low, US citizens visa-free.
2. **UAE (Virtual Work Visa)** — zero income tax, world-class infrastructure, expensive but ROI on $250k is excellent. Dubai/Abu Dhabi.
3. **Thailand (DTV, 2024)** — 5-year multi-entry, $14k savings requirement, Chiang Mai cost of living. Foreign income untaxed if not remitted same year.
4. **Costa Rica (Rentista)** — Latin America base, foreign income exempt, $3k/mo income req, 1-year renewable.
5. **Panama (Friendly Nations)** — fast permanent residency path, foreign-income exempt, Spanish-speaking, time-zone aligned with US.
6. **Mexico (Temporary Resident)** — easy, cheap, time-zone aligned, CDMX has excellent infrastructure.
7. **Colombia (M Visa)** — Medellín or Bogotá, cheap, low income requirement.
8. **Argentina (DNV)** — Buenos Aires is a European-feel city at half the cost, foreign income exempt for non-residents, currency situation evolving.
9. **Malaysia (DE Rantau)** — Penang and KL, non-resident foreign income exempt, English widely spoken.
10. **Indonesia (E33G)** — Bali, $60k income req, 5-year visa is excellent.

### Residency by Investment
- **Portugal Golden Visa**: post-2023 reforms removed real estate. Fund investment ~€500k, business creation, cultural-heritage donation. Still works, leads to citizenship in 5 years with minimal physical presence. Not outside 14-Eyes.
- **Panama Friendly Nations Visa**: $200k real estate or $750k bank deposit + employment letter, fast permanent residency, foreign-income tax-free. **Outside 14-Eyes.**
- **Mexico Temporary Resident → Permanent**: $108k in savings demonstrated. Permanent after 4 years.
- **Paraguay**: deposit ~$5,000 (the exact route is being reformed; verify before committing). Permanent residency. Citizenship in 3 years. Genuinely cheap; lighter infrastructure.
- **Uruguay**: tax residency by living 60+ days/year, "Vacaciones Fiscales" 11-year foreign-income tax holiday for new residents.

### Second-passport descent pathways
- **Italy (jure sanguinis)**: rules **tightened March 2024 and again 2025**. The new law (Decreto Tajani, March 2025) limits to two generations back (parent or grandparent must be Italian-born), eliminating the previously unlimited 1861-cutoff line. Existing applications grandfathered for now but disputed. Honest read: harder than it was, still possible if you have a parent or grandparent born in Italy.
- **Ireland**: Foreign Births Register, one generation back (grandparent born in Ireland). Straightforward.
- **Poland**: confirmation of Polish citizenship for descendants. Documents required: birth/marriage/naturalization papers showing unbroken chain. Slow but works.
- **Hungary**: simplified naturalization for descent. Hungarian-language exam required.
- **Lithuania**: descent + restoration for pre-1940 emigrants.
- **Latvia**: similar, narrower.

### Naturalization-by-residence timelines
| Country | Years required | Notes |
|---------|----------------|-------|
| Argentina | 2 | Famously fast |
| Paraguay | 3 | Cheap, lighter infrastructure |
| Portugal | 5 | After legal residency; A2 Portuguese |
| Mexico | 5 (or 2 if married to Mexican) | Spanish exam |
| Spain | 10 (2 for Latin Americans, Sephardim) | |
| Uruguay | 3 (married) / 5 (single) | "Legal residence" interpretation varies |
| Brazil | 4 (1 for Portuguese-speaking countries) | |

### Five (Six) Flags theory, 2026 reality check

The classic "Perpetual Traveler" framework (Harry Schultz / W.G. Hill, refreshed by Andrew Henderson at Nomad Capitalist) says: split the legal life across countries to minimize the claim any one state has on you.

| Flag | Definition | Reality for a US citizen |
|------|-----------|--------------------------|
| **1. Citizenship (passport)** | Where you're a citizen | US can't be escaped without renunciation. Second passport adds optionality, not tax relief. |
| **2. Residency** | Where you legally reside | Pick low/no income tax (UAE, Bahamas, Monaco — or US states like FL/TX/SD/WY) |
| **3. Banking** | Where your money lives | Wise, Schwab, plus one offshore for diversification (Singapore, Switzerland, Liechtenstein) |
| **4. Business** | Where your business is | LLC in WY/DE/NV, or offshore IBC (BVI, Cayman). Watch CFC/Subpart F rules as US citizen |
| **5. Assets** | Where your investments sit | Brokerage in US (Schwab, Fidelity, IBKR) is fine. Crypto self-custody. Real estate diversified |
| **6. Play** | Where you spend time | Cheap, safe, good internet, low friction |

Honest take: a lot of "Five Flags" content online is YouTube grift selling overpriced Caribbean passports. The real strategy for a US citizen with $250k income is narrower:
1. Set up SD/FL/TX domicile (state tax flag).
2. Maximize FEIE if physical presence permits (federal tax flag).
3. S-corp election on 1099 income (SE tax flag).
4. Banking: Schwab + Fidelity + Wise + one international.
5. Get a backup passport over 5-10 years (Italy descent if eligible, else Portugal naturalization).

### Perpetual Traveler reality for US citizens

**You cannot escape US federal income tax without renouncing.** The US is one of two countries (the other is Eritrea) that taxes worldwide income of citizens regardless of residence. So:
- **FEIE (Foreign Earned Income Exclusion)**: $126,500 for 2024, indexed to inflation, so likely $130-135k by 2026. Requires either the Bona Fide Residence Test (full tax year abroad with intent) or the Physical Presence Test (330 days outside the US in any 12-month period).
- **Foreign Housing Exclusion**: stacks on top of FEIE, additional ~$15-35k depending on city.
- **Foreign Tax Credit**: if you pay foreign tax, you can credit it against US tax. Mutually exclusive with FEIE for the same income.
- **Self-employment tax (15.3%)**: FEIE does NOT exclude this. You still owe SE tax. Workarounds: foreign corporation (complex, CFC rules), totalization agreement country (Korea, Japan, most of Europe).

The foreign-resident play for a US citizen is mostly about **state tax avoidance**, not federal. Federal at 22-24% effective on $250k is what it is.

### Banking & payments globally

| Service | Use | Cost |
|---------|-----|------|
| **Wise** (https://wise.com) | Multi-currency, real FX, debit card | Free account, FX ~0.4% |
| **Revolut** (https://www.revolut.com) | Europe, GBP/EUR | Free/€8/€14 tiers |
| **Charles Schwab High-Yield Investor Checking** (https://www.schwab.com) | **All foreign ATM fees refunded** | Free, $0 minimum |
| **Fidelity Cash Management** | Same ATM fee refund | Free |
| **Mercury** (https://mercury.com) | Business / treasury (US LLC) | Free |
| **Charles Schwab International** | Brokerage outside US | Free |
| **Interactive Brokers** | Multi-currency brokerage, low fees | Free with $10/mo activity |
| **HSBC Expat / Citi Global** | Wealthy expat full-service | Maintenance fees |
| **Wise Business** | Multi-currency for US LLC | Free |

The Schwab debit card is the single most important card for an international traveler: $0 ATM fees, refunded foreign transaction fees, no maintenance.

#### Crypto rails for cross-border
- **USDC on Base or Solana**: cheap, fast, on-ramp via Coinbase or Kraken, off-ramp via local exchange in destination (Bitso in Mexico, Bitfinex in many places, P2P via Binance in Argentina).
- **Never carry seed phrases across borders.** Use Casa multisig (https://casa.io) or self-managed Shamir backup with shares pre-positioned.

#### Capital controls to know
- **Argentina**: significant. Multiple official exchange rates, formal restrictions on USD purchase. Use Western Union for blue rate; track DolarHoy.
- **China**: $50k/yr individual outflow cap, FX scrutiny.
- **India**: FEMA. LRS allows $250k/yr remittance outbound.
- **Russia**: don't.

---

## 5. Housing

### Long-term rental hacks

#### 28+ day Airbnb / VRBO discount
Default Airbnb discount for monthly stays is 20-40%. Many hosts will negotiate further. Pre-platform negotiation (going off-app) is technically a TOS violation and risky, no platform protections if it goes bad. The smart play: book first month on-platform, negotiate next stay direct with the same host once trust is established.

#### Direct platforms
- **Booking.com Long Stay** (https://www.booking.com): aggressive on monthly rates in 2024-2026.
- **Furnished Finder** (https://www.furnishedfinder.com): US-focused, originally for traveling nurses, now broader.
- **Spotahome** (https://www.spotahome.com): EU mid-term, mostly Spain/Portugal/Italy.
- **Blueground** (https://www.theblueground.com): polished, monthly furnished, 30+ cities. Expensive but reliable.
- **Flatio** (https://www.flatio.com): EU mid-term, vetted, no security deposit.
- **Nestpick** (https://www.nestpick.com): aggregator for mid/long-term.

#### Country-specific platforms
| Country | Site |
|---------|------|
| Spain / Portugal | https://www.idealista.com |
| France | https://www.seloger.com |
| Italy | https://www.immobiliare.it |
| Germany | https://www.immobilienscout24.de |
| Japan | https://suumo.jp, https://www.realestate.co.jp (English) |
| South Korea | Naver Real Estate (https://land.naver.com) |
| Mexico | https://www.inmuebles24.com |
| Argentina | https://www.zonaprop.com.ar |
| Thailand | https://www.ddproperty.com |
| Georgia | https://www.myhome.ge |

### House-sitting
- **TrustedHousesitters** (https://www.trustedhousesitters.com): $129-$259/yr. Realistic to land 3-6 sits/year at 1-3 weeks each = 30-90 days of free housing.
- **Nomador** (https://www.nomador.com): smaller network, often higher quality.
- **MindMyHouse** (https://www.mindmyhouse.com): cheap ($29/yr), thinner inventory.
- **HouseCarers** (https://www.housecarers.com): older, still active.

Honest: house-sitting is competitive for desirable locations. Build reviews by taking unsexy first sits (remote cabins, weird pet combos).

### Hostels long-stay
Many hostels offer monthly rates of $300-$600 in cheap geographies. Private rooms in good hostels in Bangkok, Lisbon, Tbilisi can be $500-$900/mo all-in (utilities/coworking/coffee included). Not ideal at 30 but works for stretches.

### Co-living
| Brand | Price/mo | Cities | Notes |
|-------|----------|--------|-------|
| **Selina** (https://www.selina.com) | $700-$1500 | 100+ globally | Variable quality, sometimes flaky |
| **Outsite** (https://www.outsite.co) | $1500-$2500 | 25+ | Premium, members-only, dependable |
| **Habyt** (https://www.habyt.com) | $700-$1800 | EU + Asia + US | Largest, growing |
| **KASA** | $1500-$3000 | US-mostly | Hotel-style monthly |
| **Roam** (defunct in some markets, check) | $1800-$2800 | Bali, Lisbon, etc. | High-end |
| **Common** | $1200-$2200 | US | NYC, LA, etc. |

Co-living bundles wifi, coworking, community, sometimes meals. Useful for landing in a new city without logistics overhead.

### Monastic / retreat / religious hospitality
- **Wat Suan Mokkh** (Thailand, https://www.suanmokkh.org): 10-day silent retreats, ~$30/day donation, real Buddhist tradition.
- **Plum Village** (France/Vietnam/Thailand, https://plumvillage.org): Thich Nhat Hanh's tradition, 1-3 week stays.
- **Tergar Monasteries** (various): Mingyur Rinpoche lineage, retreats.
- **St. Benedict's Rule of Hospitality**: most Benedictine monasteries in Italy, France, Spain, and the US take guests for 3-7 day stays for "modest donation." Examples: Monastero di Camaldoli (Italy), Monastère de Solesmes (France).
- **Christian Hospitality Network**: pilgrims along the Camino de Santiago can stay in albergues for €5-15/night.
- **Hindu ashrams**: Sivananda (Rishikesh), Isha Yoga (Coimbatore, India), ISKCON (worldwide). Donation-based, structured days, some require yoga participation.

These are not tourist hostels. Show up with intent. Most expect participation in morning prayer/practice.

### Work-trade
- **WWOOF** (https://wwoof.net): Worldwide Opportunities on Organic Farms. ~25 country chapters, $20-$50 membership per country. Room + board for ~25h/wk of farm work.
- **Workaway** (https://www.workaway.info): $54/yr. Hosts include hostels, families, projects. Broader than WWOOF.
- **Worldpackers** (https://www.worldpackers.com): $49/yr. Similar to Workaway, polished UI.
- **HelpX** (https://www.helpx.net): cheap, old-school, broad.

### Cheapest functional metros, 2026: 1BR rent + internet quality

| City | 1BR rent (USD/mo) | Internet | Notes |
|------|-------------------|----------|-------|
| **Tbilisi, Georgia** | $400-$700 | Gigabit widely (Caucasus Online, MagtiCom) | Best nomad infra outside SE Asia |
| **Chiang Mai, Thailand** | $300-$600 | 1 Gbps, $20-$30/mo (3BB, AIS) | Largest nomad scene |
| **Da Nang / Hanoi, Vietnam** | $300-$500 | 1 Gbps fiber, ~$10/mo (Viettel, FPT) | Fastest cheap internet on earth |
| **Da Lat, Vietnam** | $250-$400 | 100-500 Mbps | Cooler climate |
| **Medellín, Colombia** | $500-$800 | 300-500 Mbps (Claro, Tigo) | Best LatAm nomad city |
| **Mexico City** | $500-$1100 | 200-500 Mbps (Izzi, Totalplay) | Roma/Condesa $800-$1100, edges cheaper |
| **Oaxaca, Mexico** | $400-$700 | 100-300 Mbps | Lower cost, slower net |
| **Lisbon, Portugal** | $900-$1500 | 1 Gbps (MEO, NOS) | Expensive now |
| **Porto, Portugal** | $700-$1200 | 1 Gbps | Lisbon-lite |
| **Tirana, Albania** | $300-$500 | 100-300 Mbps (ALBtelecom) | Underrated |
| **Yerevan, Armenia** | $400-$700 | 100-500 Mbps | Cheap, safe |
| **Penang, Malaysia** | $400-$700 | 500 Mbps-1 Gbps (Unifi, Time) | Time Fibre is excellent |
| **Kuala Lumpur** | $500-$900 | 1 Gbps | Better infra, higher cost |
| **Bali (Canggu/Ubud)** | $500-$1000 | 50-300 Mbps, patchy | Power outages common |
| **Bishkek, Kyrgyzstan** | $200-$400 | 50-200 Mbps | Cheapest, lightest infra |
| **Almaty, Kazakhstan** | $400-$700 | 100-500 Mbps | Underrated, post-2022 exodus boost |
| **Buenos Aires** | $400-$800 (USD blue) | 300 Mbps-1 Gbps | Currency volatility, blue dollar |
| **Cape Town** | $500-$1000 | 1 Gbps (Vumatel) | Loadshedding requires UPS |

For Kris specifically, **Tbilisi is the winner**. 1-year visa-free entry, gigabit internet widely, low cost, safe, Latin alphabet adjacent, growing English. Chiang Mai is the runner-up, slightly cheaper but Schengen / Schengen-adjacent travel from Asia is a longer haul.

---

## 6. Expenses Driven to Floor

### Cell / connectivity

| Option | Cost | Best for | Limit |
|--------|------|----------|-------|
| **Google Fi Unlimited Plus** | $65/mo solo, $50/line family | International data in 200+ countries | Throttled to 256 Kbps after 50 GB, "primarily US" rule (must use majority in US) |
| **T-Mobile Magenta MAX / Go5G+** | $90/mo | Free unlimited international 2G/4G in 215 countries, 5GB high-speed | Same caveat, must be primarily US |
| **Airalo** (https://www.airalo.com) | $5-$50 per region eSIM | Short trips, one-country | eSIM-only, data-only |
| **Holafly** (https://esim.holafly.com) | $19-$99 per package | Unlimited-data trips | Pricier per GB but unlimited |
| **GigSky** | $10-$40 | Coverage in obscure markets | Spotty |
| **Nomad** (https://www.getnomad.app) | $5-$50 | Wide coverage, good rates | |
| **Saily** (NordVPN spinoff) | $4-$40 | Linked to NordVPN ecosystem | |
| **Local SIM** | $5-$30 | Long stays | Acquiring as a non-resident varies; some countries require local ID |

Recommendation: keep T-Mobile or Google Fi as the US-rooted line (Google Voice forwards to it), use eSIMs (Airalo for short trips, Holafly for unlimited-data needs) as the primary data line at destination.

### VoIP / US number maintenance
- **Google Voice** (https://voice.google.com): free, works globally over data. Best for the long-haul US number.
- **JMP.chat** (https://jmp.chat): SIP-based, $5/mo, real US number, works with any SIP client. Privacy-friendlier than Google.
- **Twilio** (https://www.twilio.com): roll your own, ~$1/mo per number plus per-minute. For nerds.
- **Signal username**: lets you receive Signal messages without sharing your phone number.

### Food

#### Cooking vs eating out
- **Cheaper to eat out**: Thailand, Vietnam, Mexico, Indonesia, parts of India. Street food $1-$3/meal, sit-down $3-$8.
- **Cheaper to cook**: Western Europe, US, UK, Japan (mostly), Australia, Canada. Groceries are competitive, restaurant markup high.
- **Hybrid**: cheap geographies still benefit from cooking breakfast (eggs/coffee) and eating lunch/dinner out.

#### Monthly food budget by geography
| Geography | Monthly food (USD) | Composition |
|-----------|---------------------|-------------|
| Thailand (Chiang Mai) | $200-$400 | Mostly street food + occasional groceries |
| Vietnam | $150-$300 | Pho, banh mi, com tam, very cheap |
| Mexico | $300-$500 | Mercado + occasional restaurants |
| Eastern Europe (Tbilisi, Yerevan, Tirana) | $300-$600 | Mix cook/eat-out |
| Bali | $300-$500 | Warungs cheap, expat food expensive |
| Western Europe | $700-$1200 | Mostly cooking + occasional restaurant |
| US (urban) | $500-$900 | Cooking-heavy |
| Japan | $400-$700 | Konbini + cheap chains + cooking |

#### Eating-discipline plays
- **OMAD / time-restricted eating**: not a fad position, saves real money (one meal of ingredients vs three) and reduces logistics overhead. Many nomads default to this.
- **Soylent / Huel / Jimmy Joy**: $2-$4 per meal, complete nutrition, zero time cost. For focus days. Huel Powder is the best balance of cost and macros.
- **The expat-cafe trap**: $10 avocado toast + $5 cappuccino x 30 days = $450/mo just on the "feel European" tax. Aware of it = control over it.

### Subscriptions: stack-and-weigh audit

#### Software / dev
| Service | Cost | Value | Alternative |
|---------|------|-------|-------------|
| GitHub Pro | $4/mo | Private repos, Actions minutes | Codeberg (free, FOSS), self-host Gitea |
| GitHub Copilot | $10-$39/mo | Skip if you use Claude/Cursor | (already covered) |
| Cursor Pro | $20/mo | IDE-grade AI | Claude Code (already paid) |
| Claude Code Max | $100-$200/mo | (already in use) | |
| Codex / OpenAI Plus | $20/mo | Backup model | |
| **DigitalOcean** | $6+/mo | Cheap VPS | Hetzner ($4/mo, EU) already used |
| **Hetzner Cloud** | $4-$30/mo | Best price/perf VPS, EU | |
| AWS | Variable | Activate program ($1k-$100k credits if eligible via accelerator/VC) | GCP/Azure equiv |
| **Cloudflare** Pro | $20/mo | WAF, page rules; usually free tier is enough | Stay free |
| **Vercel** Pro | $20/mo | Already using | |
| Linear | $8/mo | Issue tracking | GitHub Issues, Plane (FOSS), Tracks |
| Notion Personal Pro | $10/mo | Docs/wiki | Obsidian (free + Sync $5/mo), Logseq (free), Silverbullet (FOSS self-host) |
| Obsidian Sync | $5/mo | Multi-device | Self-host via Syncthing, free |
| 1Password Family | $5/mo | Polish | Vaultwarden self-hosted (free) |

#### Information / research
| Service | Cost | Notes |
|---------|------|-------|
| LWN.net | $7/mo | Linux/kernel coverage, only real value if you read kernel news |
| ACM Digital Library | $99/yr (student) or $198/yr | **Worth it for math/CS research access**. Pair with arxiv-sanity |
| arXiv | Free | https://arxiv.org |
| The Browser | $52/yr | Hand-curated articles, light value |
| Stratechery | $15/mo | Tech/business analysis. Worth it if you read it weekly |
| Asianometry | $5/mo (Patreon) | Semis + China industrial; free YT version is fine |
| Construction Physics | Free + paid tier | Brian Potter, structural/industrial econ |
| Astral Codex Ten | Free + $10/mo | Scott Alexander, free is fine |
| Pirate Wires | $10/mo | Mike Solana, tech-politics |
| The Diff | $25/mo | Byrne Hobart, finance/strategy. Best in class |
| The Generalist | $25/mo | Tech/biz |
| Matt Levine / Money Stuff | Free (Bloomberg) | |
| Marginal Revolution | Free | Cowen/Tabarrok |

#### Research library access (Kris's confirmed stack — NCIS unavailable)
| Service | Cost | Status | What it unlocks |
|---------|------|--------|-----------------|
| AMS Student Membership | $48/yr | Active | MathSciNet, AMS journals |
| Anna's Archive donor | ~$60/yr | Planned | Library Genesis + Sci-Hub + Z-Library meta-search, donor speed |
| JSTOR (JPASS) | $199/yr | Planned (until UF Online enrollment) | ~12M articles; becomes free via @ufl.edu library proxy on UF enrollment |
| Sci-Hub | Free | Active | ~95% of paywalled scientific papers; mirrors sci-hub.se/.ru/.st |
| Project Gutenberg | Free | Active | ~70k public-domain ebooks |
| zbMATH Open | Free | Active | Math reviewing, free since 2021; complement to MathSciNet |
| arXiv / bioRxiv / SSRN | Free | Active | Preprint servers (the actual research frontier) |
| DOAJ | Free | Active | 20k+ fully open-access journals |
| NYPL card | Free | If NY tie | JSTOR partial + ProQuest + Gale + EBSCO remote |
| BPL eCard | Free | If MA tie or in-person | Similar database stack |
| LoC Reader Card | Free (one DC visit) | If ever in DC | Largest library in the world reading-room + remote DBs |

Recurring annual baseline: ~$108/yr (AMS + Anna's Archive). JSTOR is free post-UF-enrollment; ~$199/yr via JPASS before that. See `academia.md` §2.6.9 for full discussion and sequencing.

#### Privacy / opsec
| Service | Cost | Notes |
|---------|------|-------|
| Mullvad VPN | €5/mo | Best privacy |
| ProtonMail Plus | $4-$10/mo | Email |
| ProtonVPN | $4-$10/mo | Alternative VPN |
| Bitwarden Premium | $10/yr | Free tier is fine for most |
| 1Password Family | $60/yr | Polished alternative |
| Yubikey | $55 each, one-time | Two minimum |

#### Trading / financial
| Service | Cost | Notes |
|---------|------|-------|
| public.com | Free | OK retail broker |
| Schwab brokerage | Free | Anchor brokerage |
| Fidelity | Free | Second anchor |
| Interactive Brokers (IBKR) | Free with activity | Best low-cost multi-currency |
| TradingView Pro / Premium | $15-$60/mo | Charting |
| Polygon.io | $30-$200/mo | Market data API |
| Tiingo | $10-$50/mo | Cheaper data |
| Norgate Data | $30+/mo | Verify if still subscribed |
| QuantConnect | $10-$50/mo | Backtesting / live algo |
| Mercury | Free | Business banking |

#### Media / leisure
| Service | Cost | Notes |
|---------|------|-------|
| Spotify Premium | $11/mo | Or Tidal HiFi $11/mo for FLAC |
| Apple Music | $11/mo | If iOS-anchored |
| Netflix Standard | $15/mo | Geo-restricted; VPN-shareable |
| HBO Max | $10-$16/mo | Worth dropping; rotate |
| Apple TV+ | $10/mo | Few must-watch shows |
| Prime Video | Bundled with Prime $139/yr | Comes with Amazon Prime |
| Anna's Archive donation | $5-$10/mo | Faster downloads, supports the archive (https://annas-archive.org) |
| Kindle Unlimited | $12/mo | If you read 2+ books/mo |
| Audible | $15/mo | One credit = $15-$25 book |
| Libby + library card | Free | Audiobooks/ebooks via local library; get a US library card pre-departure |

#### Communication
| Service | Cost | Notes |
|---------|------|-------|
| Signal | Free | Default |
| Google Workspace | $7-$18/user/mo | Already in use |
| ProtonMail Plus | $4-$10/mo | |
| Tutanota Premium | €3-€7/mo | |
| Twilio dev numbers | $1/mo + usage | |

#### Other
| Service | Cost | Notes |
|---------|------|-------|
| Anytime Fitness | $30-$50/mo | International gym chain, key fob works in 5,000+ locations |
| Worldpackers | $49/yr | |
| TrustedHousesitters | $129-$259/yr | |
| Calm / Headspace | $70-$100/yr | Skip; YouTube + free apps |
| Blinkist | $80/yr | Skip; read the book or read a real summary |

### Healthcare floor
- **SafetyWing Nomad Insurance**: $42/mo under 40, includes home country up to 30 days per 90.
- **IMG Patriot Platinum**: $80-$150/mo, robust.
- **GeoBlue Trekker**: $300/yr short-trip, ~$200/mo expat.
- **Direct Primary Care (DPC) in the US** when stateside: $50-$100/mo for unlimited GP visits, telehealth, basic labs. Find via https://mapper.dpcfrontier.com.
- **Catastrophic-only US ACA plan**: Bronze tier $200-$400/mo, high deductible. Pair with HSA.
- **Dental tourism**: Mexico (Tijuana, Cancun), Thailand (Bangkok, Phuket), Hungary (Budapest), Costa Rica. Routine cleaning $30, root canal + crown $400-$800 vs $2,500-$4,000 in US.

### Tax floor
- **State domicile**: TX, FL, NV, WA, TN, SD, AK, NH (NH has interest/dividends tax through 2024, repealed 2027). **South Dakota** is the dominant nomad domicile: low requirements (one night stayed), Escapees RV Club mail service in Sioux Falls (https://escapees.com), or Americas Mailbox (https://www.americasmailbox.com). SD has no income tax, no franchise tax, lenient driver's license rules.
- **FEIE 2026**: ~$130k+ projected (indexed for inflation). https://www.irs.gov/individuals/international-taxpayers/foreign-earned-income-exclusion
- **Self-employment / S-corp election**: at >$60k of 1099 income, electing S-corp on a single-member LLC pays yourself a "reasonable salary" + distribution. Saves ~15.3% SE tax on the distribution portion. Typical net savings: $6-$10k/yr at $100-$150k income, $10-$15k/yr at $200k+. Setup ~$500-$1500 (Collective, Formations, or a CPA).
- **HSA (Health Savings Account)**: 2026 limits projected ~$4,400 individual. Tax-deductible going in, tax-free growth, tax-free out for medical. Becomes IRA-like at 65. Requires HSA-eligible HDHP. Triple tax advantage. Best account in the US system.
- **Mega-backdoor Roth**: if your 401(k) plan allows after-tax contributions and in-service conversions, you can stash up to $46,500 (the 2024 number, going up) into Roth on top of the regular $23k. Most employees don't have this; freelancers/S-corp owners with a Solo 401(k) can build it.
- **Solo 401(k)**: best retirement vehicle for self-employed. 2026 limits ~$70k+ between employee + employer contribution. Pair with Mega Backdoor Roth.
- **SEP-IRA**: alternative, simpler, but no Roth option.

---

## 7. The Three-Year Glide Path

| Year | Phase | Income target | Location | Expense ceiling | Tax move |
|------|-------|---------------|----------|-----------------|----------|
| **Year 1 (2026-2027)** | US undergrad, pentest/BB starting, first algo deploys | $40-80k | US (FL or TX domicile; physical wherever undergrad lands) | $2,200/mo | Establish SD/FL/TX domicile via PMB. Open Solo 401(k). |
| **Year 2 (2027-2028)** | Income streams mature. Schengen+nomad-visa breaks (Portugal/Georgia/Mexico) during summer/winter terms. | $80-160k | 60% US / 40% abroad (Schengen quarter, Tbilisi quarter, CDMX/Medellín base) | $2,200/mo (US) / $1,500/mo (abroad) | S-corp election on 1099 income. Max HSA + Solo 401(k). |
| **Year 3 (2028-2029)** | Grad school abroad (OIST/EPFL/ETH) or full nomad. Income at target. | $200-300k | Mostly abroad. Tbilisi or Bangkok base + 3-4 secondary cities | $1,500-$2,500/mo | Establish bona fide residence or physical presence test for FEIE. State domicile remains SD/FL. Banking diversified (Wise + Schwab + Mercury + one foreign). |

Cross-reference with `trading.md`, `pentest.md`, `bug-bounty.md`, `open-source.md` for income side. The income mix matters for tax strategy: trading gains (LTCG/STCG, no SE tax), pentest 1099 (SE tax, S-corp), bug bounty (1099 misc, S-corp eligible), open-source/grants (often 1099 misc).

---

## 8. Off-grid Optionality

Floor-everything is a strategy, not an identity. Physical resilience matters.

- **STARGATE as eternal anchor**: keep STARGATE on Tailscale, accessible from any device worldwide via Tailscale exit node. Personal cloud + dotfile server + Vaultwarden + photo backup + git mirror. The single most important piece of personal infra.
- **Bug-out bag at US home base**: 72-hour kit. Cash $1k, 3 days food/water, hard-drive backup of critical data, sat-comm device (Garmin inReach Mini, $400 + $15/mo plan), passport copy, sealed waterproof container with seed phrase share.
- **Physical metals + cash float**: $5-10k mixed (3-4 oz gold, 30-50 oz silver, $2k cash) at home base. Not for trading, not for inflation hedge, for power outages, banking system disruptions, emergency relocation cost.
- **Bitcoin cold storage with seed split**: 2 physical locations minimum. Use SLIP-39 (3-of-5 or 2-of-3) so loss of one share doesn't destroy access. Memorized passphrase as a third factor.
- **Backup passport application in motion**: even if it takes 5 years, start. Italy descent if eligible, else Portugal residency clock.

---

## 9. Things Worth Spending Real Money On

Floor-everything fails when it hurts the work. Pay full price for:

- **Bandwidth and mobile data**: never cheap out on internet. Day-rate Holafly for unlimited data is worth it during travel. Pay for the fiber upgrade at base.
- **Keyboard**: split mechanical. **ZSA Voyager** ($365, https://www.zsa.io/voyager) or **Kinesis Advantage 360** ($459) or **Moonlander Mark I** ($365). Travel-ready Voyager fits in a backpack.
- **Chair when stationary**: used **Herman Miller Aeron** or **Steelcase Leap** ($400-$700 on eBay) beats new $200 chair every time. When nomadic, find apartments with decent chairs included or buy used and resell.
- **Display**: 4K 27" or ultrawide when stationary. LG 27GN950-B, Dell U2723QE.
- **Books / scholarly access**: ACM membership ($99-$198/yr), arxiv-sanity, physical books for canonical works. Hardcover used from AbeBooks or Better World Books.
- **Health-supporting food**: never poison yourself to save $50/mo. Quality protein, vegetables, fermented foods, healthy fats. The downstream cost of cheap food is medical.
- **Travel insurance with extraction**: Global Rescue ~$660/yr. Single most important insurance line.
- **Yubikeys**: two minimum, three ideal.
- **Reliable banking**: Schwab + Fidelity + Mercury + Wise + one foreign. Never single-point-of-failure.
- **Sat-comm in remote travel**: Garmin inReach Mini 2 ($400 + service). Saves lives, gets you out of bad places, lets you signal you're alive.
- **Glasses / contacts**: if you wear them, two backup pairs, current prescription stored digitally. Lost glasses on the road is a real productivity event.
- **Travel insurance for electronics**: not always worth it, but a $30/yr policy on a $2k laptop is a small hedge.

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## Source Index

Core references used throughout:
- Henley Passport Index: https://www.henleyglobal.com/passport-index
- US State Department travel advisories: https://travel.state.gov
- OSAC: https://www.osac.gov
- STEP: https://step.state.gov
- CBP border search: https://www.cbp.gov/travel/cbp-search-authority
- EFF border guide: https://www.eff.org/wp/digital-privacy-us-border-2017
- IRS FEIE: https://www.irs.gov/individuals/international-taxpayers/foreign-earned-income-exclusion
- IRS SE tax: https://www.irs.gov/businesses/small-businesses-self-employed/self-employment-tax-social-security-and-medicare-taxes
- Schengen calculator: https://www.schengencalculator.com
- r/onebag: https://www.reddit.com/r/onebag
- r/churning: https://www.reddit.com/r/churning
- r/digitalnomad: https://www.reddit.com/r/digitalnomad
- Nomad List: https://nomadlist.com
- Numbeo (cost of living): https://www.numbeo.com
- Escapees RV Club (SD domicile): https://escapees.com
- Doctor of Credit: https://doctorofcredit.com
- Frequent Miler: https://frequentmiler.com
- point.me / seats.aero (award search)
- Tax Foundation state tax map: https://taxfoundation.org/data