If you live abroad, you generally do still pay tax on your pension. U.S. citizens and green card holders owe federal income tax on their worldwide income, including 401(k) distributions, IRA withdrawals, traditional pension payments, and Social Security benefits, no matter where they live.1Internal Revenue Service. U.S. Citizens and Resident Aliens Abroad Your new country of residence may also want a share. What keeps you from paying full tax to both governments on the same pension check is a network of bilateral tax treaties and, where those fall short, the foreign tax credit.
The Baseline Rule for U.S. Retirees Overseas
Moving abroad does not end your U.S. filing requirement. If you hold a U.S. passport or a green card, the IRS expects a return and expects tax on your pension income. Many retirees assume that establishing residency in another country shifts the whole tax bill to that country. It doesn’t.
Most countries use some version of a 183-day rule. Spend more than half the year in a country, and it typically claims the right to tax your worldwide income too. When you end up a tax resident in two countries at once, treaties include tiebreaker rules that look at where your permanent home is, where your family lives, and where your financial life is centered. Those tiebreakers decide which country taxes you as a full resident and which has to limit its claim.
How Tax Treaties Reduce Double Taxation
The U.S. has income tax treaties with roughly 65 countries. Each treaty assigns taxing rights over specific categories of income so the same pension payment isn’t fully taxed twice. Without a treaty, U.S.-source income paid to a foreign person is generally subject to a flat 30% withholding tax.2Internal Revenue Service. NRA Withholding On top of that, your country of residence may tax the same money at its own rates.
Most U.S. treaties follow the U.S. Model Income Tax Convention, which gives the country where the retiree lives the exclusive right to tax private pension distributions.3Treasury. United States Model Income Tax Convention 2016 But each treaty is negotiated separately, so the pension article in the U.S.-Canada treaty may differ from the one in the U.S.-France treaty. Read the specific treaty with your country, not just the model.
The Savings Clause
Here is where many American expats get tripped up. Nearly every U.S. tax treaty contains a “savings clause” that preserves the right of the United States to tax its own citizens and residents as if the treaty didn’t exist.4Internal Revenue Service. Tax Treaties Can Affect Your Income Tax In practice, even if a treaty says your pension is taxable only in your country of residence, the U.S. can still tax you on it as long as you remain a U.S. citizen.
Some treaties carve out specific exceptions to the savings clause for certain income types, including pensions or Social Security. Whether your pension fits an exception depends on the exact language of the treaty with your country.5Internal Revenue Service. The Taxation of Foreign Pension and Annuity Distributions If no exception applies, you owe U.S. tax on the pension, but you can usually claim a foreign tax credit for what you paid the other government, which prevents true double taxation even without a treaty exemption.
Countries Without a Treaty
If you move to a country that has no tax treaty with the U.S., the default rules apply: the U.S. taxes you on your pension, and your new country may also tax you under its domestic law. Your main relief is the foreign tax credit, claimed on Form 1116, which offsets U.S. tax by the amount you paid to the foreign government. The credit cannot exceed the U.S. tax on that same income. In a high-tax country, you may wipe out your U.S. liability entirely; in a low-tax country, you will still owe the difference to the IRS.
How Different Pensions Are Treated
The treaty rules are not one-size-fits-all. How your payments are taxed depends on whether they come from a private employer, a government body, or the Social Security system.
Private and Employer Pensions
Distributions from private and occupational pensions, including 401(k) plans, traditional IRAs, and corporate pension plans, are generally taxable only in the country where you live under most U.S. tax treaties.3Treasury. United States Model Income Tax Convention 2016 The logic is that you consume goods and services in your new country, so it gets to tax the income. The savings clause complicates this for U.S. citizens: unless the treaty specifically carves out an exception, the U.S. keeps its right to tax these distributions too, and you rely on the foreign tax credit to avoid paying twice.
Government Service Pensions
Pensions paid for past service to a government, including federal civil service, military retirement, and state and local government pensions, follow a different rule. Under most treaties, these payments are taxable only by the country that pays them.3Treasury. United States Model Income Tax Convention 2016 A retired federal employee living in Portugal will generally still owe U.S. tax on their FERS or CSRS pension. The usual exception is if the retiree is also a citizen or national of the country where they now live.
Social Security Benefits
Social Security payments get their own treatment, and the rules vary widely between treaties. Some give exclusive taxing rights to the paying country, some shift them to the country of residence, and some split them. If you receive a foreign social security payment while you are a U.S. citizen or resident, the savings clause usually preserves the U.S. right to tax it.5Internal Revenue Service. The Taxation of Foreign Pension and Annuity Distributions
Separately, the U.S. has Social Security totalization agreements with about 30 countries. These aren’t income tax treaties. They keep you from paying Social Security taxes to both countries at the same time, and they let workers who split their careers across borders combine work credits to qualify for benefits.6Social Security Administration. U.S. International Social Security Agreements Countries with totalization agreements include the United Kingdom, Canada, Germany, France, Japan, Australia, and about two dozen others.
Roth Accounts
Roth IRAs and Roth 401(k)s create a specific complication abroad. Qualified withdrawals are tax-free under U.S. law, but many foreign governments do not recognize the Roth structure and may tax the distributions as ordinary income. Whether a treaty protects you depends on whether the pension article covers Roth accounts, and most treaties were written before Roth accounts became common. This is one area where getting country-specific advice is worth the cost.
The Foreign Earned Income Exclusion Won’t Help
A common misconception is that the Foreign Earned Income Exclusion can shelter pension income from U.S. tax. It cannot. The exclusion applies only to earned income from wages and self-employment, and the IRS explicitly excludes pension and annuity payments, including Social Security benefits, from foreign earned income.7Internal Revenue Service. Foreign Earned Income Exclusion If pensions are your main retirement income, your relief comes from treaties or the foreign tax credit, not the FEIE.
Claiming Treaty Relief
Getting a treaty rate applied to your pension takes paperwork on both sides: proving your residency to the country whose benefits you’re claiming, and telling the pension administrator to adjust withholding.
Certifying U.S. Residency
If you are a U.S. resident claiming treaty benefits in a foreign country, you generally need an IRS certification of your U.S. tax residency. You request it by filing Form 8802, which asks for your taxpayer identification number, the tax years to be certified, and an $85 user fee.8Internal Revenue Service. Instructions for Form 8802 The IRS recommends submitting Form 8802 at least 45 days before you need the certification. If approved, the IRS issues Form 6166, a Treasury Department letter certifying that you are a U.S. resident for income tax purposes.9Internal Revenue Service. Form 6166 – Certification of U.S. Tax Residency You give that letter to the foreign tax authority or pension administrator to claim the reduced rate or exemption.
Form W-8BEN for Nonresident Aliens
If you are a nonresident alien receiving a U.S. pension and want a reduced treaty withholding rate, you give Form W-8BEN to the U.S. plan administrator. It certifies your foreign status and identifies the treaty provision you’re claiming.10Internal Revenue Service. About Form W-8 BEN, Certificate of Foreign Status of Beneficial Owner for United States Tax Withholding and Reporting Without it, the administrator must withhold at the default 30% on the entire taxable distribution.11Internal Revenue Service. Tax Withholding Types
Foreign Relief Forms
Each country has its own process. The United Kingdom, for example, uses Form DT-Individual to let residents of treaty partner countries apply for relief from UK income tax on pensions and other UK-source income.12GOV.UK. Double Taxation: Treaty Relief (Form DT-Individual) Expect to provide proof of residency from your new country’s tax authority and taxpayer identification numbers from both sides.
State Tax Can Follow You
Federal tax treaties do not override state income taxes. If you kept residency in a state with an income tax before moving abroad, that state may keep taxing your pension until you formally establish domicile elsewhere. Some states explicitly refuse to honor treaty benefits when calculating state income tax, including Alabama, Arkansas, California, Connecticut, Hawaii, Kansas, Kentucky, Maryland, Mississippi, Montana, New Jersey, North Dakota, and Pennsylvania.13Internal Revenue Service. State Income Taxes
States with no income tax, such as Florida, Texas, and Nevada, pose no problem. But if your last state of residence was California or New Jersey, cutting ties cleanly matters. States look at whether you still own property, hold a driver’s license, or are registered to vote there. Contact your former state’s tax department before assuming your move ends your state tax liability.
Renouncing Citizenship Ends the Obligation, at a Price
Some retirees consider giving up U.S. citizenship to end the worldwide tax obligation for good. It works, but it can trigger an exit tax. You are classified as a “covered expatriate” subject to the expatriation tax if any of these apply:
- Your net worth is $2 million or more on the date of expatriation.
- Your average annual net income tax for the five years before expatriation exceeds $211,000 (the 2026 inflation-adjusted threshold).
- You cannot certify that you complied with all federal tax obligations for the five years before expatriation.
Covered expatriates face a mark-to-market regime that treats most of their assets as sold the day before expatriation. The resulting gain is reduced by an exclusion amount of $910,000 for 2026, and gain above the exclusion is taxed at capital gains rates.14Internal Revenue Service. Expatriation Tax Deferred compensation, including pension benefits, gets special treatment and may be subject to a 30% withholding tax on distributions made after expatriation. Renunciation is permanent, and the tax consequences are complex enough that professional advice isn’t optional.