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FAQ

FAQ: GeoArbitrage Savings Calculator

Click any question to expand the answer.

Geographic Arbitrage is the FIRE movement's most powerful cheat code. It's the practice of earning income in a strong currency (like the US Dollar) while living in a country with a lower cost of living and/or lower taxes. This creates a massive gap between what you earn and what you spend. Instead of just saving what's left over, you're strategically manufacturing a higher savings rate, which dramatically accelerates your path to financial independence.

This tool is your personal simulation engine. It takes your unique financial profile (income, investments, etc.) and runs it through different countries' tax and cost-of-living models. Instead of just guessing, you can see a data-driven estimate of your after-tax disposable income, your potential annual savings, and even how many years a move could shave off your FIRE timeline.

It is complicated, and this is one of the most important features of the tool! The U.S. is one of the only countries that uses "citizen-based taxation," meaning you have to file a U.S. tax return on your worldwide income no matter where you live.

This calculator simulates the primary tool U.S. expats use to avoid double taxation: the Foreign Earned Income Exclusion (FEIE). Based on your inputs (like "Days Physically Outside the U.S."), it calculates the allowable exclusion and applies it to your U.S. tax calculation, just as you would on your tax return. This correctly models how a U.S. citizen can often reduce their U.S. tax liability to $0 on earned income while living and working abroad.

We pull data from a wide range of authoritative sources to provide the most accurate estimates possible. This includes:

  • Tax Data: National tax authorities, global financial consultancies (like Deloitte and PwC), and OECD tax databases.
  • Cost of Living & Quality of Life: Crowd-sourced data from various sources, which provides up-to-date indices on costs for housing, groceries, and more.
  • Healthcare & Safety: Indices from sources like the World Health Organization (WHO), the World Bank, and other global development indices.

We strive to keep this data as current as possible, but you should always verify crucial numbers with official government sources.

This is our proprietary score designed to give you an at-a-glance feel for a country beyond just the numbers. It's a weighted average that combines many factors, including financial viability (cost of living, purchasing power), quality of life (healthcare, safety, pollution), and the practical ease of relocating (visa availability). A higher score is generally better, but it's a guide—your personal preferences are what truly matter!

The form is designed around your current income profile, so you should enter your income as you earn it now (e.g., your annual W2 salary, your self-employment income, etc.). The calculator will then apply the tax rules of each selected country to that same income, showing you the difference.

They are two parts of a powerful planning process:

  • The FIRE Timeline Calculator answers the question: "When can I retire?" based on your current savings plan.
  • This Geo-Arbitrage Savings Calculator answers the question: "How can I retire sooner?" It shows you how your savings potential changes in different countries, giving you the numbers you need to supercharge your timeline.

Start with the Timeline Calculator to get your baseline, then use this tool to find your shortcut.

No. This is a FREE & powerful modeling tool for informational and educational purposes only. Tax and immigration laws are incredibly complex and change frequently. The figures provided are estimates based on our data models. You must consult with qualified financial, tax, and legal professionals before making any life-changing decisions.

This tool is fundamentally different and vastly more powerful than standard cost-of-living comparison sites like Numbeo or Expatistan. While those sites provide raw data points, the Rewire Abroad calculator provides a complete financial answer.

Here’s what makes our tool unique—there is nothing else like it available:

  • Holistic Financial Picture: We are the only tool that synthesizes your pre-tax salary, tax liabilities, and cost of living into a single, cohesive analysis. Competitors only show you one piece of the puzzle at a time.
  • Calculates Lifestyle Parity: Our calculator doesn't just tell you that rent is cheaper in Lisbon. It answers the most critical question: "What salary would I need to earn in Lisbon to maintain the exact same lifestyle I have in San Francisco?" This includes your current level of spending and your current level of savings.
  • Focuses on Savings Potential: The ultimate goal of geo-arbitrage is to accelerate your path to financial independence. Our calculator's primary output is showing you the concrete increase in your annual savings potential, directly tying the decision to your FIRE (Financial Independence, Retire Early) journey.
  • Provides an Actionable Salary Target: The "Equivalent Salary" result is a real number you can use for job negotiations, remote work salary adjustments, or business planning. It moves beyond abstract percentages into a practical, actionable figure.

The "Equivalent Salary" is the magic of this tool, and it's calculated through a sophisticated, multi-step process that no other public calculator performs:

  1. Analyze Your Baseline: First, we take your current salary and calculate your estimated take-home pay after taxes in your home country. From this, we know exactly how much you spend and how much you save per year.
  2. Translate Your Spending: We then take your annual spending amount and adjust it using the Cost of Living Index of your target country. For example, if you spend $50,000/year in a country with an index of 100, and your target country has an index of 60, we calculate your new required spending to be $30,000/year to maintain the same lifestyle.
  3. Calculate New Tax Burden: We add your original annual savings amount to your new, lower spending amount to determine your required take-home pay in the target country. Then, we work backward, calculating the pre-tax salary you would need to earn in that new country to hit that take-home pay number, factoring in its unique tax brackets and rules.
  4. Synthesize and Display: The result is the pre-tax "Equivalent Salary" you need in the new location to preserve both your lifestyle and your savings rate.

The Geo-Arbitrage Score is a proprietary metric we developed to give you an at-a-glance summary of a location's financial attractiveness based on your personal inputs. It's a percentage score that represents the increase in your savings rate if you were to move.

For example, if your savings rate in your home country is 20%, and this move would allow you to increase it to 30%, that's a 50% increase in your savings power. The score distills this powerful outcome into one easy-to-understand number. A higher score means a more impactful move for accelerating your financial goals.

To provide the most accurate and holistic estimates possible, our calculator pulls data from a variety of high-quality sources, including:

  • Cost of Living & Quality of Life: We utilize regularly updated data from world-class crowdsourced databases and public APIs.
  • Tax Data: Our tax calculations are based on the latest tax bracket information provided by the finance ministries or official government revenue services of each respective country.
  • Internal Database: All this data is fed into the proprietary database that powers Rewire Abroad, ensuring consistency across all of our financial tools.

While this represents one of the most comprehensive public models available, tax laws are complex. This tool is a powerful starting point for your research, and we recommend consulting with a qualified international tax professional for personalized advice.

This calculator is designed to be the first step in your journey. Once you've identified a location with high potential, here’s how to proceed:

  1. Deeper Country Research: The calculator gives you the financial "what." Now, discover the "why." Use our Country Search tool to explore qualitative data like safety, healthcare quality, visa options, and lifestyle factors. There's likely a detailed article already written on this website - use the search page to find the country in question.
  2. Model Your FIRE Timeline: Take your "Potential Annual Savings" from this tool and plug it into our FIRE Calculator. You can directly see how many years this move will shave off your journey to financial independence.
  3. Validate the Numbers: Do a "boots on the ground" budget. Look up actual apartment rental prices, grocery costs, and restaurant menus in the city you're considering to validate the calculator's estimates against real-world data.