Expat Personal Finance: The Definitive Guide

Moving abroad is one of the most exciting things you'll ever do. New city, new culture, new favorite coffee shop. The financial side, though? That's where the excitement fades and the spreadsheets begin.

Here's what hits you all at once when you move to another country. You need to open bank accounts in a new country, often in a language you're still learning. You're converting currency constantly and losing money on exchange rate markups every time. You've got tax obligations in two countries, and you're not entirely sure what either country expects from you. Your health insurance from home doesn't work here. Your retirement account contributions get complicated. And your budgeting app? It only understands one currency.

None of these problems are unsolvable. But they hit you simultaneously, and most resources cover them one at a time in isolation. This guide covers all of it, practically, not theoretically. We'll walk through banking, taxes, budgeting, insurance, retirement, investing, and the most common mistakes expats make with their money.

Whether you just moved abroad or you've been living internationally for years, this is the reference we wish we'd had when we first packed our bags. If you're specifically looking for a budgeting tool built for expats, start here.

Your banking setup is the foundation of your financial life abroad. Get it right and everything else, budgeting, transfers, tax reporting, becomes significantly easier. Get it wrong and you'll spend months cleaning up the mess.

Keep your home country accounts

This is the single most important piece of banking advice for new expats: do not close your home country bank accounts. You'll need them for incoming income if you work remotely for a home-country employer. You'll need them for tax refunds. You'll need them for subscriptions that require a home-country payment method. And you'll need them for emergencies, flights home, for instance.

At minimum, maintain one checking account and one savings account in your home currency. Keep your mailing address current with the bank. Some banks will close accounts if they detect you've moved abroad, so check your bank's policies before updating your address to a foreign one.

Open local accounts

Every country has different requirements for opening a bank account as a foreigner. In Spain, you need your NIE (foreigner identification number). In Germany, you need your Anmeldung (residence registration). In the UK, some banks require proof of address that you can't get until you have a bank account, the classic catch-22.

Start the process early. Some banks take weeks to approve non-resident accounts. We have country-specific banking guides for Spain, Germany, the United Kingdom, and Portugal that walk through the exact process, required documents, and recommended banks for each country.

Multi-currency accounts as a bridge

Services like Wise and Revolut can bridge the gap while you're setting up local banking. They let you hold and convert multiple currencies, receive money in various currencies with local bank details, and make transfers at near-mid-market rates.

That said, they're not a full replacement for local accounts. Many landlords require rent payments from a local bank via direct debit. Some employers can only pay into domestic bank accounts. And certain government services, tax payments, social security contributions, require a local IBAN. Use Wise or Revolut as a bridge, not your sole banking solution.

The recommended setup

After helping thousands of expats think through their banking, here's the setup we recommend:

• Home country: Checking account + savings account in your home currency. Keep these active even if you rarely use them.
• Host country: Local checking account in the local currency. This is where your rent, utilities, and daily spending come from.
• Bridge: A Wise or Revolut account for transferring money between currencies at fair rates. This sits between your home and host country accounts.

Borderless Budget connects to banks in the US, Canada, UK, and EU , so you can see all of these accounts in one place regardless of which countries you're banking in.

Taxes are the part of expat life that nobody finds exciting, but everybody needs to get right. The penalties for mistakes are real, and the rules are more complex than most people expect.

US citizens and permanent residents

The United States is one of very few countries that taxes based on citizenship, not just residency. If you're a US citizen or permanent resident, you must file US taxes every year regardless of where you live in the world. You're taxed on your worldwide income.

Beyond filing your regular return, you have additional reporting obligations:

• FBAR (FinCEN 114): If the aggregate value of your foreign bank accounts exceeds $10,000 at any point during the year, you must report all of those accounts to the Financial Crimes Enforcement Network. This is a separate filing from your tax return.
• FATCA (Form 8938): If your foreign financial assets exceed $50,000 (or $200,000 if you're filing from abroad), you must report them on Form 8938 with your tax return. Yes, this overlaps with FBAR. No, you can't skip one because you filed the other.
• Foreign Earned Income Exclusion (FEIE): You can exclude up to approximately $126,500 (2024 amount, adjusted annually) of foreign earned income from US taxation if you meet either the bona fide residence test or the physical presence test. This is a major benefit for most expats.
• Foreign Tax Credit (FTC): If you pay income tax to your host country, you can claim a credit on your US return to avoid being taxed twice on the same income. You can use either the FEIE or the FTC, and in some cases both, but the interaction is complex.

When in doubt, hire an expat tax specialist. The penalties for non-filing are severe, up to $10,000 per year for a missed FBAR, and potentially much more for willful violations. This is not an area where you want to wing it.

UK citizens

The UK tax situation for expats depends heavily on your domicile status and whether you choose the remittance basis or arising basis of taxation. If you're domiciled in the UK but living abroad, you may still owe UK tax on worldwide income. If you're non-domiciled, you might be able to use the remittance basis, where you only pay UK tax on foreign income you bring into the UK.

One thing to watch: you may lose access to ISA contributions while living abroad. ISAs are a powerful tax-free savings and investment vehicle in the UK, but you generally can't make new contributions while you're a non-UK resident. You can keep existing ISAs open, but they'll just sit there until you return.

Tax treaties

Most countries have bilateral tax treaties designed to prevent double taxation. These treaties determine which country has the right to tax specific types of income, employment income, investment income, pensions, and so on.

Here's the critical thing to understand: tax treaties don't eliminate your obligations. They determine which country gets to tax what, and they provide mechanisms (like the Foreign Tax Credit) to make sure you're not paying full tax to both countries. You'll likely still need to file in both countries to claim the benefits of the treaty.

A note from us: We're a budgeting app, not tax advisors. Everything in this section is general information based on publicly available tax guidance. Your specific situation may be different. Consult a qualified expat tax professional for advice tailored to your circumstances.

Traditional budgeting assumes your money exists in one currency, in one country, flowing through one set of accounts. When you move abroad, every one of those assumptions breaks.

The most common problem is what we call the "two mental budgets" trap. You instinctively keep a euros budget and a dollars budget in your head. Your rent and groceries live in one mental bucket. Your student loans and US subscriptions live in another. And neither budget gives you the full picture of how much you're actually spending, or saving, each month.

This is how expats end up overspending without realizing it. You think you're fine in euros and fine in dollars, but when you add them up at the end of the month, the total is higher than you expected. Exchange rate shifts make it even murkier. We wrote about the 7 most common budgeting mistakes expats make , and the mental budgets problem is near the top of the list.

There are three approaches to budgeting across currencies, and each has trade-offs:

1. Home currency method

Convert everything into your home currency and budget entirely in dollars (or pounds, or whatever your home currency is). This is the simplest approach, and most single-currency budgeting apps push you toward it. The downside: your budget amounts fluctuate with exchange rates even when your actual spending doesn't change. Your rent might be exactly \u20AC1,200 every month, but your budget shows a different dollar amount each time you check.

2. Local currency method

Budget everything in the local currency where you spend it. Your Spanish expenses are in euros, your US expenses are in dollars. This gives you an accurate view of each country's spending, but you lose the ability to see the total picture. How much did you spend in total this month? You'd have to do the conversion yourself to find out.

3. Hybrid method (recommended)

Set budgets in the currency where you spend the money, but view totals and summaries in your home currency. This gives you the best of both worlds: your grocery budget stays at \u20AC400 regardless of exchange rate fluctuations, and your monthly spending summary shows you the real total in dollars. Our multi-currency budgeting guide goes deep on this approach.

This hybrid method is exactly how we built Borderless Budget. We built it because no existing app handled multi-currency budgeting well. You set budgets in each currency, track spending where it happens, and see the full picture in your home currency. Exchange rates update daily from the European Central Bank, so your totals always reflect current rates, not stale numbers from when you first set things up.

The result: you know exactly what your euros budget looks like in euros, what your dollars budget looks like in dollars, and what the combined total looks like in whichever currency you prefer. See how multi-currency budgeting works in Borderless Budget.

Exchange rates affect every part of your financial life as an expat. A 5% swing in EUR/USD, which happens more often than you'd think, can mean hundreds of dollars per month in real spending power. You don't need to become a currency trader, but you do need a strategy.

When to transfer money between currencies

For large lump sums , rent deposits, car purchases, visa fees, it's worth watching the rate for a few days and transferring when it's favorable. You're not trying to time the market perfectly. You're just avoiding the worst days. A 1% difference on a \u20AC5,000 transfer is \u20AC50 saved for five minutes of checking a rate.

For regular monthly expenses, automate it. Set up a recurring transfer through Wise or your preferred service. Trying to time every monthly transfer is exhausting, stressful, and statistically no better than just picking a consistent day each month. The peace of mind is worth more than the occasional extra few dollars you'd save.

Avoiding hidden fees

The biggest cost of currency exchange isn't the fee, it's the markup on the exchange rate. Here's what the major options typically cost:

• Banks: Typically charge a 2-4% markup on the mid-market exchange rate. On a $2,000 transfer, that's $40-80 in hidden costs, on top of any wire transfer fee.
• Wise: Uses the mid-market rate (the real rate you see on Google) and charges a small transparent fee, usually 0.4-0.7%. On $2,000, that's roughly $8-14 total.
• Credit cards: Foreign transaction fees are typically 1-3% on top of whatever exchange rate your card issuer uses. Some cards (like the Chase Sapphire) waive foreign transaction fees entirely.

Services for international transfers

Here's a quick breakdown of the most popular options:

• Wise: Best for transparency and mid-market rates. Ideal for regular transfers under $10,000. The app is excellent.
• OFX: Good for large transfers. Once you're above $10,000, you can negotiate rates with their dealers. They also offer forward contracts to lock in rates for future transfers.
• Your bank: Convenient because you already have an account. But usually the most expensive option by far. Only use this as a last resort.

Our practical advice: build a currency buffer into your budget. Keep 5-10% extra in both currencies to absorb exchange rate swings. This prevents you from being forced to transfer money on a bad day just because your local account is running low.

Healthcare is one of the biggest financial wildcards for expats. The system you're used to at home probably doesn't apply where you're living now. Understanding your options, and budgeting for them properly, can save you thousands.

International health insurance vs. local coverage

Some countries offer public healthcare to legal residents. In Spain, if you're employed and contributing to social security, you have access to the public healthcare system. Germany requires all residents to have health insurance, and the public system is comprehensive. The UK's NHS covers residents regardless of nationality (though access rules have tightened in recent years).

Other countries require private insurance, and many visa applications require proof of coverage as part of the application process. If you're moving on a non-lucrative visa to Spain, for example, you'll need private insurance that meets specific requirements.

International health insurance plans are designed specifically for expats. The major providers include Cigna Global (best for comprehensive, long-term coverage), Allianz Care (strong in Europe), and SafetyWing (popular with digital nomads for its affordable, flexible plans). These plans typically offer worldwide coverage, the ability to choose doctors and hospitals, and coverage that travels with you if you move again.

Budgeting for healthcare

The mistake most expats make is treating healthcare as a fixed expense, your monthly premium and nothing else. In reality, healthcare is a variable expense. You'll have copays, out-of- pocket costs for things your plan doesn't cover, and the occasional surprise bill.

In many countries, out-of-pocket costs are significantly lower than in the US. A doctor's visit in Spain might cost \u20AC20-50 out of pocket at a private clinic. But these costs are still unpredictable, and they add up.

Our recommendation: budget a healthcare reserve of \u20AC200-500 per month depending on your situation and country. This covers your insurance premium, expected copays, and a buffer for unexpected expenses. If you're in a country with strong public healthcare and you're enrolled, you can budget toward the lower end. If you're relying entirely on private insurance, budget higher.

Don't forget dental and vision

Basic international health insurance plans often don't cover dental and vision, or they cover them only with high copays. This catches a lot of expats off guard.

Many expats fly home for major dental work because it's covered by their home-country insurance, or because they trust their long-time dentist. If that's your plan, budget for it. A round- trip flight plus a week of accommodation for dental work is a real expense that should be in your budget, not a surprise.

Alternatively, look into local dental and vision options. In many countries, dental care is dramatically cheaper than in the US, even at private clinics. A professional cleaning in Spain might cost \u20AC50-80, compared to $200-300 in the US without insurance.

Retirement planning is complicated enough when you live in one country. Add a second country, with its own pension system, tax rules, and contribution limits, and it gets significantly more complex. But the fundamentals still apply: start early, be consistent, and understand the rules.

Contributing to home country accounts

If you're a US citizen, you can still contribute to an IRA as long as you have earned income. However, the Foreign Earned Income Exclusion (FEIE) complicates things. If you exclude all of your foreign earnings using the FEIE, you may have no taxable compensation remaining, which means you can't make a Roth IRA contribution. This is a common trap for US expats. The workaround is to not exclude all of your income, but that has its own tax implications. Talk to your tax advisor about the right approach for your situation.

UK citizens can generally maintain existing pension accounts while living abroad, but new contributions may be restricted depending on your residency status and the type of pension scheme. Employer workplace pensions typically stop when you leave UK employment. SIPPs (Self-Invested Personal Pensions) offer more flexibility for expats, but contribution limits may apply differently when you're a non-resident.

One often-overlooked detail: check if your host country has a totalization agreement with your home country. These agreements let you combine social security credits earned in both countries toward retirement benefits. The US has totalization agreements with about 30 countries. Without one, you might pay into a local social security system for years and not vest long enough to receive benefits.

Local pension schemes

Some countries automatically enroll employed residents in the local pension system. In Germany, if you're employed, pension contributions are mandatory. In Spain, you contribute to the social security system as part of your employment. In the Netherlands, many employers offer additional pension schemes on top of the state pension.

The critical question for expats: what happens to your contributions if you leave before vesting? Vesting periods vary by country and scheme. In some cases, you can claim a refund of your contributions when you leave. In others, the money stays locked until you reach retirement age. And in a few unfortunate situations, you may lose contributions entirely if you leave too early. Understand the vesting rules before you start contributing.

The FIRE approach for expats

Financial independence / retire early (FIRE) is increasingly popular among expats, and for good reason. Geographic arbitrage, earning in a strong currency like the US dollar while spending in a weaker local currency, can dramatically accelerate your savings rate. A remote worker earning $100,000 and living in Portugal, Thailand, or Colombia can save significantly more than the same person living in San Francisco.

The caveat: don't plan your entire retirement around favorable exchange rates. Currencies fluctuate. A country that's cheap today might not be in 10 years. Build your FIRE plan on conservative assumptions and treat any exchange rate advantage as a bonus, not the foundation.

Investing while living abroad is one of the most frustrating aspects of expat finance. The rules are complicated, the restrictions are real, and the consequences of getting it wrong can be expensive. Here's what you need to know.

Brokerage restrictions

Many major US brokerages restrict account access for non-US residents. Vanguard, Schwab, and Fidelity have all been known to freeze or restrict accounts when they discover you've moved abroad. The rules vary by brokerage and often by country, some are stricter about European residents due to MiFID II regulations.

Interactive Brokers is widely considered the most expat-friendly US brokerage. They explicitly serve international clients, offer accounts in multiple currencies, and provide access to markets worldwide. If you're a US citizen living abroad and want to keep investing, Interactive Brokers is the default recommendation.

Some expats maintain a US address (family member's address, mail forwarding service) for brokerage purposes. This is a gray area. It may violate the brokerage's terms of service, and it could create tax complications. We're not recommending for or against it, just know that it's a common practice with real risks. Consult a professional.

The PFIC trap for US expats

This is the biggest investing trap for US citizens living abroad. PFIC stands for Passive Foreign Investment Company, and it's the US tax code's way of discouraging Americans from investing in non-US mutual funds and ETFs.

If you invest in a European ETF or a non-US mutual fund, the IRS may classify it as a PFIC. The tax treatment is punitive: gains are taxed at the highest marginal rate, interest charges are added, and the reporting requirements (Form 8621) are burdensome. Even a small investment in a PFIC can create a disproportionate tax headache.

The practical advice: if you're a US citizen, stick to US-domiciled ETFs wherever possible. Buy VTI, not VWRL. Buy SPY, not a European-listed equivalent. Yes, this limits your options. But the tax simplicity is worth it. European brokerages may make it difficult to purchase US- domiciled ETFs due to PRIIPS regulations, which is another reason Interactive Brokers (where you can access US ETFs directly) is the preferred option.

Tax-efficient investing across borders

The trickiest part of international investing is that tax- advantaged accounts in one country aren't necessarily recognized by another. A UK ISA is a brilliant tax-free wrapper in the UK, but the US doesn't recognize it as tax-advantaged. A US Roth IRA grows tax-free under US rules, but some countries may tax the gains.

The practical rule of thumb: simplify. Fewer accounts in fewer countries is easier to manage, easier to report, and less likely to create unexpected tax bills. Before opening any new investment account, understand how both your home country and host country will tax it. If you can't get a clear answer, that's a sign to consult an international tax advisor before moving forward.

We've talked to hundreds of expats about their finances. These are the mistakes that come up again and again:

1. Closing home country bank accounts too early. You think you won't need them. Then you need to receive a tax refund, pay a US-based subscription, or book an emergency flight home. Reopening an account from abroad is a nightmare.
2. Ignoring exchange rate drift in your budget. A 5% shift in EUR/USD on a \u20AC2,000 monthly spend is \u20AC100 per month, \u20AC1,200 per year. If your budget doesn't account for this, you're flying blind.
3. Not filing taxes in your home country. Especially common among US citizens who assume they don't need to file because they live abroad. You do. The penalties are steep.
4. Keeping mental budgets instead of tracking everything in one place. The "two mental budgets" problem we described earlier. It feels manageable until it isn't.
5. Paying bank exchange rate markups when cheaper options exist. Using your bank's international wire transfer instead of Wise or OFX can cost you 2-4% on every transfer. On $24,000 per year in transfers, that's $480-960 in unnecessary fees.
6. Not building a currency buffer. When your local account runs low and the exchange rate is bad, you're forced to transfer at the worst time. A 5-10% buffer in both currencies gives you flexibility.
7. Investing in non-US funds as a US citizen. The PFIC rules are punitive and catching. Many expats don't discover this until tax time, when it's too late to unwind the position cleanly.

We covered these and more in detail in our post on the most common budgeting mistakes expats make.

Here are the tools and services we recommend for managing your finances as an expat:

• Budgeting: Borderless Budget , the budgeting app built for people who live in more than one currency. See our full comparison of budgeting apps for expats to find the best fit for your situation.
• Money transfers: Wise (best for regular transfers and transparency), OFX (best for large transfers with negotiable rates).
• Tax preparation: Taxes for Expats, Greenback Expat Tax Services, both specialize in US expat tax filing and can handle FBAR, FATCA, and FEIE.
• Healthcare: SafetyWing (affordable plans for digital nomads), Cigna Global (comprehensive plans for long-term expats).
• Investing: Interactive Brokers, the most expat-friendly brokerage with global market access and multi-currency accounts.
• Free tools: Multi-currency budget template , a free spreadsheet to get started if you're not ready for a dedicated app.