Geoarbitrage FIRE Makes 70% Savings Rates the Norm

A domestic move can cut your rent in half and maybe lift or lower your salary. It will never do what an international move does, which is hand you a third, structurally separate lever on top of the other two. That third lever is the Foreign Earned Income Exclusion, and it is the reason a geoarbitrage FIRE strategy can push a stuck 35 percent savings rate toward 70 percent without a raise, without austerity, and without touching your portfolio target.

Most FIRE coverage treats "move somewhere cheaper" as one fuzzy lifestyle win. The honest decomposition is that every relocation fires some combination of three independent levers, and domestic relocation can only ever fire two of them. The third is reserved for people who leave US soil, and it is the decisive one.

The Three Levers of Geoarbitrage FIRE

Every relocation, whether across town or across an ocean, draws on the same three pools of money.

1. Earnings, the gross income you keep after the move.
2. Cost, the amount you spend to live.
3. Tax, what governments take from the gap in between.

Domestic moves can activate the first two. They cannot activate the third. The Foreign Earned Income Exclusion requires foreign earned income, and you only have that once you live and work abroad under one of two qualifying tests. No amount of state-hopping unlocks it.

Worse for domestic movers, the first two levers often fight each other. Cheaper US metros usually pay less in the same role. The software engineer who leaves San Francisco for Boise tends to trade San Francisco comp for Boise comp, which claws back part of the cost win before it ever reaches the savings rate. International geoarbitrage breaks that coupling: you keep a US-dollar salary while spending in a cheaper currency. Both levers fire in the same direction, and a third one stacks on top.

This is the core of geoarbitrage vs domestic relocation for FIRE. Domestic optimization has a ceiling around two levers. International adds a third that compounds with the other two.

The headline math: a remote worker saves about 34 percent in San Francisco, about 47 percent in a cheaper US city, and about 70 percent abroad with all three levers firing. The detailed table comes later, but that is the destination.

Lever One: USD Earnings Preserved Across Borders

The earnings lever only works if your income stays anchored in dollars. A remote worker employed by a US company, or a freelancer with US clients, can keep earning USD from anywhere. That is the entire premise, and it is the part most people misunderstand.

The asymmetry matters at the salary level. Move domestically and your employer recalibrates pay to the local market. Move internationally as a remote worker and, in most cases, your USD salary follows you. The same job that paid $120,000 in Chicago still pays $120,000 when you log in from Mexico City or Lisbon, because your employer's revenue and your output have not changed.

This lever collapses the moment you take a local-market job abroad. A developer role in Bangkok pays Bangkok wages. The earnings lever only fires if you preserve both the currency and the client base you already have.

Lever Two: Sovereign-Scale Cost Arbitrage

Crossing a national border produces a cost gap that crossing a state line almost never matches. The spread between San Francisco or New York and a major Latin American, Southeast Asian, or Southern European city is substantially wider than the gap between the most and least expensive US metros, and the difference shows up in every budget category at once. Indices like Numbeo's cost of living comparison make the gap concrete. In Mexico City, Medellin, and Chiang Mai, rent, food, healthcare, and transit routinely run 50 to 70 percent below comparable US-city spending, with the cheapest categories lower still.

This international cost of living arbitrage is stickier than domestic arbitrage for three structural reasons. Currencies move more slowly than local housing markets, so the purchasing-power advantage persists across years rather than months. Government-subsidized healthcare and transit are priced for the local economy, not for expats, which means foreigners benefit from a subsidy they did not pay into. And the cheapest tier of goods and services in a foreign country is often a normal, non-austerity tier there, not a deprivation tier, which means your floor lifestyle costs less without feeling like one.

A useful sanity check: if your monthly burn in a US city is $4,500 and the equivalent lifestyle abroad is $1,800, that $2,700 monthly delta is lever two doing its work. It is real money, freed every month, before tax is even considered.

Lever Three: The FEIE Tax Exclusion Domestic Moves Cannot Touch

This is the lever that separates international geoarbitrage from every domestic strategy. The foreign earned income exclusion lets qualifying US taxpayers exclude about $130,000 of foreign earned income from US federal income tax for tax year 2025, with the figure adjusting upward for inflation each year. You claim it on IRS Form 2555, and the IRS lays out the full mechanics in IRS Publication 54.

Two things make this lever structural rather than tactical. First, it scales with income up to the cap, so a remote worker earning between $100,000 and $150,000 sees the largest proportional benefit because most or all of their earned income falls inside the exclusion. Second, it is categorically unavailable to anyone who stays in the United States. You cannot replicate it domestically with any combination of deductions or state moves.

The exclusion can be widened further by the foreign housing exclusion, which lets qualifying taxpayers exclude certain housing costs above a baseline threshold on top of the earned income exclusion. In cities with higher allowable housing ceilings, this stacks directly onto the FEIE and pushes the effective tax shield higher.

Crucially, the FEIE excludes income tax only. It does not erase every tax obligation, and the ones that survive it are where most expats get blindsided.

The Stacked Math to a 70 Percent Savings Rate

The 70 percent figure is income-dependent. It is optimized for the $100,000 to $150,000 band where the FEIE cap covers most of earned income. Below that, the exclusion saves less marginal tax. Above it, income past the roughly $130,000 cap is fully taxed, pulling the rate down fast.

The table below shows the idealized scenario: single remote worker, $150,000 gross, no dependents, standard deduction.

The abroad row carries the same gross as San Francisco. FICA still applies because the worker is a W-2 employee. Federal income tax collapses to near zero because $130,000 is excluded and the standard deduction absorbs the rest. At $2,750 monthly spend, the rate lands near 70 percent.

At $80,000, the FEIE shields less marginal tax because the worker already sits in a lower bracket, so the rate lands closer to 60 percent. At $250,000, roughly $120,000 above the cap is fully taxed, dropping the rate into the mid-60s. The sweet spot is narrow.

The self-employed variant trades FICA for SE tax, which the FEIE does not exempt, so the rate lands a few points lower unless a totalization agreement redirects the social insurance piece.

Compressing the FIRE Timeline

Under a 4 percent withdrawal framework, years to FIRE compress as the savings rate climbs. The jump from 35 to 70 percent is not a doubling of progress; it is roughly a halving of the time horizon. Three levers do not just raise the savings rate; they pull the finish line closer for anyone trying to retire abroad early.

Qualifying for the FEIE Under Either Test

The exclusion is not automatic. You qualify through one of two tests, and the wrong trip home can disqualify you mid-year.

The physical presence test requires 330 full days outside the United States in any consecutive 12-month period. A "full day" means a full 24 hours, so transit days through the US do not count. This is the test digital nomads and short-term expats rely on, because it does not require residency anywhere, only physical absence from home.

The bona fide residence test requires that you be a bona fide resident of a single foreign country for an uninterrupted period that includes a full tax year. It suits expats who have genuinely settled somewhere, with a lease, a visa, and a life that is not transient. It is harder to establish but more forgiving on travel back to the US.

The trap to know about is year one. Neither test is satisfied on day one, and the exclusion is prorated by qualifying days in the first year. You may owe full tax for the months before you crossed the threshold, which can produce an ugly bill if you did not set cash aside. Plan the move date with the tax calendar in mind.

What the FEIE Does Not Exclude

The third lever is powerful because it is narrow. Combined, the surviving taxes can quietly drag a projected 70 percent savings rate into the low 60s or worse. Self-employment tax alone consumes roughly $18,000 on a $120,000 freelance income, and mishandled host-country taxes can erase the entire lever-three advantage.

Self-Employment Tax: The Biggest Silent Drag

Independent contractors owe the full 15.3 percent SE tax on net earnings up to the Social Security wage base, plus Medicare above it, even when income is fully excluded for income tax. On a $120,000 freelance income, that is roughly $18,000 the FEIE does not touch. Totalization agreements can redirect the social insurance piece to the host country, which sometimes lowers the bill. The Social Security totalization agreements cover countries where dual coverage can be eliminated. Bottom line: budget roughly $18,000 for SE tax on $120,000 of freelance income.

FICA for W-2 Employees: The Cost You Cannot Escape

Stay on a US employer's payroll abroad and FICA withholding continues. For a $150,000 W-2 earner, the roughly $11,500 annual bite is already baked into the stacked-math table. Bottom line: FICA is the one cost a W-2 expat cannot offset, roughly $11,500 per year regardless of location.

Investment Income: The Tax That Grows With You

Dividends, interest, and capital gains are unearned income. The FEIE never touches them. A $500,000 portfolio at a 3 percent yield generates $15,000 of income the exclusion does nothing about. Bottom line: as the portfolio compounds toward FIRE, investment income tax grows with it, making tax-advantaged accounts more important abroad, not less.

Host-Country Taxes: The Full Clawback Risk

The FEIE only deals with US tax. Your new country may tax you too, and foreign tax credits, not the exclusion, address double taxation on income above the cap. Bottom line: model both tax systems before you move. Mishandled credits can consume the entire lever-three advantage.

State Tax Domicile and the Stealth Drag

For a high-savings-rate FIRE pursuer, the absolute dollar value of the FEIE shield is larger, making a residency audit proportionally more devastating. A worker excluding $50,000 of federal tax through the FEIE has far more to lose in a clawback than someone saving $8,000.

California, Virginia, and New Mexico assert continuing tax residency based on domicile, the connections that signal intent to return. Keep a driver's license, bank account, voter registration, mailing address, or storage unit in one of these states and the tax authority can argue you never left, billing you as if the FEIE did not exist. State tax residency rules vary, but the safe path is the same: sever cleanly.

The accumulation-phase risk is retroactive clawback. A successful audit reclassifies years of excluded income, producing a bill plus penalties that can wipe out the entire third-lever savings. The withdrawal-phase risk is more insidious. California-style states can tax portfolio income and capital gains during a 30 to 40 year retirement, income the plan assumed was state-tax-free after moving abroad. That drag compounds silently for decades.

Severing domicile means surrendering every marker of residence before you go: new driver's license, changed mailing address, closed or relocated accounts, sold or rented property, documented move. Leave nothing for an auditor to point to.

Sequencing a Three-Lever Move

To fire all three levers at once without disqualifying yourself, sequence matters.

Before You Leave

1. Lock the earnings lever first. Confirm your employer or clients will keep paying you in USD after you relocate, and clarify your employment status. W-2 versus contractor changes the tax math downstream.
2. Pick a destination that supports both remaining levers. You want a cost of living well below US levels and a country whose tax and visa regime is compatible with the FEIE.
3. Sever your state domicile before you leave. Do this while you still have feet on the ground and can close accounts, deregister vehicles, and change addresses cleanly. Doing it from abroad is harder and sloppier.

After You Land

1. Time the move to satisfy the physical presence test within one tax year if possible. Leaving early in the calendar year, and minimizing US trips, lets you bank 330 full days sooner and reduces the prorated year-one gap.
2. Set aside cash for the taxes that survive the FEIE. SE tax or FICA, investment income tax, and any host-country liability all need reserves. The exclusion lowers your bill, it does not zero it out.
3. File Form 2555 in year one even if you only partially qualify. Proration still captures a meaningful chunk, and establishing the election early simplifies future years.

Three levers, fired together, are what turn a 35 percent savings rate into a 70 percent one. Domestic relocation gives you two of them at best, and usually makes them fight each other. The third lever is the entire reason international geoarbitrage is a different category of move, not just a bigger version of the same one.