The United States is one of only two countries in the world that taxes its citizens on their worldwide income no matter where they live. If you are a US citizen or green card holder living in the UAE, the UK or anywhere else, your obligation to file with the IRS does not stop when you leave America, and it does not stop just because you pay tax, or no tax, where you now live. Most people abroad end up owing little or no US tax once exclusions and credits are applied, but the filing and reporting obligations remain, and the penalties for getting the reporting wrong are severe, even when no tax is due. This guide explains what you must file, the reliefs that reduce what you owe, and the traps, particularly around foreign investments, that catch Americans abroad most often. It is a starting point for understanding your obligations, not personal tax advice, and US tax is a specialist area where professional help is strongly advised.
Almost every country taxes people based on where they live. The United States is different: it taxes its citizens, and its green card holders, on their worldwide income based on citizenship and status, wherever in the world they live. This means that as a US person abroad you generally must file a US federal tax return every year, reporting your worldwide income, in addition to any obligations you have in your country of residence. This is true whether you left the US last year or decades ago, and whether or not you still have any connection to America beyond your citizenship. The good news, explored below, is that exclusions and credits mean most Americans abroad owe little or no actual US tax. The obligation that remains is to file and to report, and it is the reporting, more than the tax, that carries the real risk.
The US provides two main mechanisms to stop your income being taxed twice. The Foreign Earned Income Exclusion, claimed on Form 2555, allows a qualifying person to exclude up to $132,900 of foreign earned income in 2026 from US tax. To qualify you must meet either the Bona Fide Residence test or the Physical Presence test, broadly being outside the US for at least 330 full days in a 12-month period. The Foreign Tax Credit, claimed on Form 1116, instead gives you a dollar-for-dollar credit against your US tax for income tax you have paid to a foreign government. Which is better depends on your situation. In a high-tax country, the Foreign Tax Credit often wipes out your US liability entirely. In a no-tax country such as the UAE, there is no foreign tax to credit, so you rely on the exclusion and may owe US tax on income above the exclusion threshold. Two important limits: the exclusion covers earned income only, not investment income, and it does not by itself remove US self-employment tax, which can still apply at 15.3% on business profits. However, if you are in a country with a US Totalization Agreement, such as the United Kingdom, you may be exempt from US self-employment tax where you are paying into that country's social security system instead.
This point matters particularly for Americans in the Gulf. Living in a country with no income tax feels like it should mean no tax at all, but for a US citizen it does not. Because there is no local tax to generate a Foreign Tax Credit, an American in the UAE earning above the Foreign Earned Income Exclusion threshold will typically owe US tax on the excess, at US rates, with nothing to offset it. An often-quoted example: an American earning $175,000 in the UAE excludes the first $132,900 under the FEIE, but the remaining income is taxed by the US at higher marginal rates because of the way excluded income stacks. So the very tax-free environment that attracts people to Dubai does not extend to US citizens in the way they often assume, and the higher your income above the exclusion, the more this matters. Planning around it, including how income is structured and timed, is genuinely valuable.
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For most Americans abroad, the biggest compliance risk is not income tax at all: it is the requirement to report foreign financial accounts, and the penalties for failing to. There are two separate regimes, and you may have to file both. The FBAR, FinCEN Form 114, is required if the total value of your foreign financial accounts exceeded $10,000 at any point during the year, even for a single day, and even if the money is spread across several accounts. It is filed separately from your tax return, with FinCEN rather than the IRS. Separately, FATCA requires Form 8938 with your tax return if your foreign financial assets exceed higher thresholds: broadly $200,000 for a single filer living abroad on the last day of the year (or $300,000 at any time during the year), and $400,000 filing jointly (or $600,000 at any time). These are reporting obligations, not taxes, but the penalties for getting them wrong are severe, reaching many thousands of dollars per violation, and they apply even when you owe no US tax. Foreign bank accounts, investment accounts, and often foreign pension and retirement accounts, all potentially count. Foreign pensions in particular can be a compliance hotspot, potentially triggering several forms at once (FBAR, FATCA, and in some cases the foreign-trust or PFIC forms).
This is the trap that catches Americans abroad most often and most expensively, and it is worth understanding before you invest anywhere. A Passive Foreign Investment Company, or PFIC, is broadly any pooled foreign investment: a non-US mutual fund, a UK or European ETF, many offshore investment bonds, and various foreign retirement and investment products. The problem is that these are standard, sensible investments in most countries, so an American abroad who simply opens a local investment account or buys a local fund, exactly as their neighbours do, can unknowingly acquire a portfolio of PFICs. US tax treatment of PFICs is punitive: unfavourable tax rates, an interest charge on gains, and complex annual reporting on Form 8621 for each holding. The result is that an investment which is perfectly efficient for a non-American can be actively harmful for a US citizen. The practical lesson is that US persons abroad generally need to invest differently from everyone around them, often using US-domiciled funds, and should take advice before buying foreign investment products.
US persons abroad get an automatic extension to file to 15 June, and can extend further to 15 October with Form 4868. The FBAR has its own deadline of 15 April, with an automatic extension to 15 October. Many Americans abroad discover these obligations late, sometimes years late, often because no one told them citizenship-based taxation existed. If that is you, it is important to know two things: first, you are far from alone, and second, the IRS operates formal amnesty-style programmes, such as the Streamlined Filing Compliance Procedures, designed for people who were genuinely unaware and need to catch up without facing the full weight of penalties. Coming forward through the correct programme is very different from being found. Because the filing package for anyone with foreign accounts, foreign pensions, foreign companies or PFICs is genuinely complex, and because the cost of errors is high, this is an area where specialist US tax preparation is strongly advised rather than optional.
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The most common and most dangerous misunderstanding. Filing and paying are separate things. You may owe no US tax after exclusions and credits, but you almost certainly still have to file a return, and you may have separate FBAR and FATCA reporting obligations regardless. Not owing tax is not a reason not to file.
Living in the UAE or another no-tax jurisdiction does not make you exempt from US tax. With no foreign tax to credit, a US citizen earning above the exclusion can owe real US tax. Assuming otherwise leads to unexpected bills and missed planning opportunities.
Opening a local investment account and buying local funds, the obvious thing to do, can saddle a US person with a portfolio of PFICs and punitive tax treatment. Investing as a US person abroad requires a different approach, and advice before buying rather than after.
The $10,000 FBAR threshold is the total across all your foreign accounts, not per account, and it is triggered if you cross it even briefly. People with several modest accounts often assume they are under the limit when in aggregate they are not.
Discovering you should have been filing for years is alarming, but ignoring it is the worst response, because the reporting penalties are designed to be severe. The IRS has specific programmes for people who were genuinely unaware, and coming forward voluntarily through the right route is far better than waiting.
Rachel moved from the US to Dubai four years ago for a senior role paying around $170,000. Delighted by the tax-free salary, she assumed she had no more US tax to worry about, stopped thinking about the IRS, and, on a colleague's suggestion, opened a local investment account and put her savings into a range of international funds. She had not filed a US return since leaving and had never heard of an FBAR.
A review of her position was sobering but fixable. Because the UAE levies no income tax, she had no Foreign Tax Credit to shelter the income above the Foreign Earned Income Exclusion, so she did in fact owe some US tax for each year. She had crossed the FBAR threshold every year without filing. And her international funds were PFICs, carrying punitive treatment and requiring complex reporting. Rather than hope it went unnoticed, she was guided to a US tax specialist who brought her current through the IRS Streamlined Filing Compliance Procedures for taxpayers who were genuinely unaware, and her investments were restructured onto a US-compliant footing going forward.
Rachel came into full compliance through the correct amnesty route rather than being caught out, resolved the PFIC problem in her portfolio, and now files correctly each year with her reporting obligations handled. The tax-free salary was real; the assumption that it meant no US obligations at all was not.
Illustrative example, not a real client.
Clarity Global Wealth helps American citizens and green card holders living in the UAE, the UK and elsewhere understand their US obligations and, crucially, avoid the investment traps that make those obligations far more expensive than they need to be. US tax filing itself is a specialist field, and we connect you with qualified US tax professionals who handle returns, FBAR and FATCA reporting, PFIC issues and catch-up filings properly. Where we add particular value is on the financial planning side that sits alongside the tax: making sure that how you invest, save and structure your money abroad is compatible with being a US person, so you do not unknowingly create PFIC problems or reporting nightmares in the first place. Because your position spans US rules and the rules of your country of residence, we help you see the whole picture and coordinate the right specialists on each side, so that being American abroad is a manageable administrative reality rather than an expensive surprise.
This guide is provided for general information only and reflects our understanding of the rules as at the date of publication. It is not personal financial, investment, pension or tax advice, and should not be relied upon as such. Rules and tax treatment can change and depend on your individual circumstances and country of residence. You should always seek regulated advice specific to your situation before taking action.
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