5-Year Differential = Monthly Arbitrage Gain × 60 months

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A Worked Example: $75,000 Remote Salary, Austin to Manila

Inputs:

• Monthly take-home (single filer, $75K gross, no state tax): $5,000
• Current monthly expenses in Austin: $4,000
• Projected monthly expenses in Manila (BGC area): $1,500
• One-time transition costs: $7,000

Step 1: Current monthly savings $5,000 minus $4,000 = $1,000 per month

Step 2: Projected monthly savings in Manila $5,000 minus $1,500 = $3,500 per month

Step 3: Monthly arbitrage gain $3,500 minus $1,000 = $2,500 per month in additional savings

Step 4: Break-even on transition costs $7,000 divided by $2,500 = 2.8 months

Under three months to fully recover every dollar spent on the move.

Step 5: Five-year savings differential $2,500 multiplied by 60 = $150,000 in additional savings over five years

That is $150,000 more saved on the exact same income before any investment returns. The geographic arbitrage number for this scenario is $2,500 per month with a break-even of under three months.

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The Variables Most People Miss

Running this calculation once gives you a number. Running it correctly means accounting for the variables that shift the outcome significantly.

Variable 1: Tax residency and the Foreign Earned Income Exclusion

US citizens living abroad may qualify for the Foreign Earned Income Exclusion (FEIE), which allows you to exclude up to $126,500 of foreign-earned income from US federal taxes in 2024.[1] If your income qualifies, this changes your take-home meaningfully, potentially adding $800 to $2,000 per month to the income side of the calculation.

This is complex and requires a tax professional who specializes in expat taxation. It is not automatic and not available to everyone. But it is a variable that can dramatically improve the geo-arbitrage math, and most introductory articles do not mention it.

Variable 2: Inflation in the target location

The Philippines, Thailand, and Vietnam have all experienced meaningful inflation over the past three years, compressing some of the cost advantage relative to 2021 data. Build a 5 to 10% annual inflation buffer into your target location expense projections. Do not assume today’s costs are static over a five-year horizon.

Variable 3: Lifestyle inflation in the target location

The most common mistake first-time geo-arbitrage practitioners make is spending like a local on some things while spending like a tourist on others. Eating at Western restaurants four nights a week, traveling regionally every month, and furnishing a premium apartment will compress your savings significantly. Your projection should reflect your actual intended lifestyle, not an optimistic version of it.

Variable 4: Healthcare and insurance gaps

Your US health insurance likely does not cover you abroad, or covers only emergency care. Budget for private health insurance in the target country. In the Philippines this runs $50 to $150 per month for comprehensive private coverage, which is genuinely cheap but needs to be in the calculation.

Variable 5: Return trips home

If you plan to visit family or the US twice a year, factor in $2,000 to $4,000 per year in flights. This compresses the monthly arbitrage gain by $170 to $330 per month. The math is still compelling in most Southeast Asia scenarios, but the honest number includes it.

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Comparing Multiple Target Locations

Once you understand the formula, you can compare any number of locations systematically. Here is a quick comparison using the same $5,000 per month take-home and $4,000 per month current expenses in Austin:

Location	Est. Monthly Expenses	Monthly Savings	Monthly Gain vs Austin	Break-Even ($7K transition)
Austin (baseline)	$4,000	$1,000	n/a	n/a
Manila, Philippines	$1,500	$3,500	+$2,500	2.8 months
Chiang Mai, Thailand	$1,400	$3,600	+$2,600	2.7 months
Ho Chi Minh City, Vietnam	$1,300	$3,700	+$2,700	2.6 months
Medellin, Colombia	$1,700	$3,300	+$2,300	3.0 months
Lisbon, Portugal	$2,800	$2,200	+$1,200	5.8 months
Mexico City, Mexico	$2,000	$3,000	+$2,000	3.5 months

Sources: Numbeo and Expatistan averages, 2025.[2][3]

Southeast Asia produces the strongest geo-arbitrage numbers for US dollar earners in 2026. Vietnam, Thailand, and the Philippines are consistently in the top tier. The full cost breakdown comparing all three is in the Philippines vs Thailand vs Vietnam cost of living article.

For the detailed category-by-category breakdown of Manila specifically, see the Austin vs Manila comparison.

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When the Number Is Good Enough to Act On

There is no universal threshold. The right number depends on your goals. But here are the benchmarks experienced geo-arbitrage practitioners use.

A break-even under six months is a strong signal. The transition cost is recovered quickly enough that the financial risk of the move is minimal. This describes most Southeast Asia scenarios for US earners.

A monthly arbitrage gain above $1,500 is meaningful enough to materially accelerate a savings or investment goal within a two to three year horizon.

A five-year differential above $50,000 changes the trajectory of a financial independence timeline by several years. Most Southeast Asia scenarios for earners above $60,000 exceed this threshold significantly.

If your calculation produces a break-even over 12 months or a monthly gain under $800, the math is less compelling. The lifestyle disruption may not be worth the financial return at that level.

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Building the Income Side First

The geo-arbitrage calculation only works if your income is location-independent. A $75,000 salary that requires you to be in Austin produces zero arbitrage benefit.

If you are still building the income side, the remote income hub at GalaxyBuilt is the right starting point. The guide to finding fully remote jobs that never RTO is specifically for people working through that first step.

If you are a founder or freelancer building location-independent client income, the lead generation content covers how to build consistent outbound demand for a service business that runs from anywhere.

And if you want to run the full calculation for your specific situation with someone who has done it, the geo-arbitrage consulting at GalaxyBuilt is where that conversation starts.

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Summary

Your geographic arbitrage number is calculated in five steps: subtract current expenses from take-home to get current savings, subtract target location expenses from take-home to get projected savings, find the monthly gain as the difference between the two, divide transition costs by the monthly gain to find break-even, and multiply the monthly gain by 60 for the five-year differential. On a $75,000 income moving from Austin to Manila, the monthly arbitrage gain is $2,500, break-even is under three months, and the five-year differential is $150,000 in additional savings. The variables that shift this number most are tax residency status, lifestyle inflation in the target location, and the cost of return trips home. Run the calculation with your actual numbers, not averages, and compare at least two or three target locations before deciding. The math is the honest version of the conversation.

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References

[1] IRS — “Foreign Earned Income Exclusion” — irs.gov/individuals/international-taxpayers — 2024 [2] Numbeo — “Cost of Living by City” — numbeo.com — 2025 [3] Expatistan — “Cost of Living Comparison Tool” — expatistan.com — 2025 [4] Lamudi Philippines — “Rental Listings BGC and Makati” — lamudi.com.ph — 2025