Retiring overseas changes almost nothing about your obligation to file a US tax return and almost everything about the economics of the income that funds your retirement. US citizens and green card holders are taxed on worldwide income regardless of residence, so the real planning question for retiring abroad is not whether you still file but what happens to each individual income source once a second tax system is layered on top. Social Security, IRA and 401(k) withdrawals, pensions, and investment income each behave differently, and the answer for one tells you nothing about the answer for the next. This guide works through them one at a time.
How Is Social Security Taxed If You Retire Abroad?
For a US citizen or green card holder, Social Security is normally taxed under the ordinary rules of IRC §86 wherever you live, and the move itself does not change the calculation. Provisional income determines the outcome: up to 50 percent of benefits become taxable above the base amounts of $25,000 single and $32,000 joint, and up to 85 percent above the adjusted base amounts of $34,000 single and $44,000 joint. Those statutory amounts are not indexed for inflation, so more retirees cross them every year. Both figures drop to zero for a married taxpayer filing separately who lived with their spouse at any point during the year. There is one significant exception. A short list of treaties excepts the social security article from the saving clause, so a US citizen who is a resident of those countries is exempt from US tax on US Social Security altogether. IRS Publication 915 identifies them as Canada, Egypt, Germany, Ireland, Israel, Italy (Italian citizenship is also required), Romania, and the United Kingdom. Everywhere else, §86 applies exactly as it did before you left. Our Social Security benefits tax guide walks through the provisional income calculation in detail.
The treatment is completely different for a nonresident alien, which matters enormously if you have a non-citizen spouse. Under IRC §871(a)(3)(A), 85 percent of a nonresident alien's benefit is includible, and under IRC §871(a)(1) that amount is taxed at a flat 30 percent with no deductions and no graduated brackets. The result is an effective withholding rate of 25.5 percent of the gross benefit, applied at source.
If your spouse is a non-citizen, the difference between these two columns is the single largest planning variable in the household. Where a treaty assigns taxing rights over Social Security to the country of residence, the withholding can drop substantially, but claiming it is a disclosed treaty position. See our guide to claiming treaty benefits on Form 8833.
Will the SSA Actually Pay You Where You Live?
Taxation and payment are two separate questions, and the payment rules turn on citizenship. The Social Security Administration cannot send payments into Cuba or North Korea. For a US citizen, benefits withheld for those months are held and can be collected after moving to a country where SSA can pay (SSA Publication No. 05-10137). For a non-citizen, benefits for those months are permanently lost and can never be recovered, under 20 CFR §404.460(c).
Separately, a non-citizen beneficiary generally stops receiving payments after six consecutive calendar months outside the United States under 20 CFR §404.460(a), subject to a set of statutory exceptions and to exceptions available under totalization agreements. US citizens are not subject to that six-month rule.
This citizen versus non-citizen distinction is the most consequential fact in this entire section, and it is routinely missed in household planning because both spouses assume the rules that apply to the citizen apply to both.
How Are IRA, 401(k), and RMD Withdrawals Taxed Abroad?
They remain fully taxable in the US, exactly as they would be if you never left. Distributions from traditional IRAs and 401(k) plans are ordinary income, required minimum distributions continue on schedule, and the penalty for missing an RMD applies without regard to residence. See our RMD rules guide for the timing mechanics.
The mistake worth naming here is the assumption that the foreign earned income exclusion will absorb these withdrawals. It will not. IRC §911 applies only to compensation for personal services performed abroad, and IRC §911(b)(1)(B)(i) expressly excludes pension and annuity amounts from the definition of foreign earned income. A retiree with no wages has no foreign earned income at all, which means the FEIE is simply unavailable, and the FEIE versus foreign tax credit analysis that dominates working expat planning is largely irrelevant once you stop working.
There is a subtler problem. Distributions from US retirement plans are generally US-source income, because IRC §861(a)(3) and Reg. §1.861-4 source deferred compensation to the place the underlying services were performed, and most US retirees performed those services in the US. If part of your career was worked abroad, the corresponding portion of the distribution is foreign-source, which is worth identifying rather than assuming away. The foreign tax credit limitation under IRC §904 applies only to foreign-source income, so if your country of residence taxes that same withdrawal, the foreign tax credit on Form 1116 may not relieve it. Several US treaties contain resourcing provisions that re-characterize such income as foreign-source for credit purposes, which is often the only mechanism that prevents genuine double taxation on retirement withdrawals. Whether one applies to you is a treaty-by-treaty question, not a general rule.
How Is a Foreign Pension Taxed?
A foreign pension is taxable to a US person, and the analysis is materially harder than for a US plan. Foreign retirement arrangements rarely qualify under IRC §401, so the tax-deferral you enjoy locally often does not carry over to the US return, and the arrangement may additionally raise foreign trust reporting questions. Treaty pension articles are the main source of relief, and their terms vary widely between treaties.
Because the answer depends so heavily on the specific plan and the specific treaty, we cover this separately in our guide to the US tax treatment of foreign pensions.
How Is Investment Income Taxed When You Live Abroad?
Dividends, interest, and capital gains stay on your US return at the same rates, and sourcing again drives whether the foreign tax credit works. Dividends from US corporations and interest from US payers are US-source, so foreign tax imposed on them by your country of residence may not be creditable without a treaty resourcing provision.
Capital gains follow a different rule. IRC §865 generally sources gain on the sale of personal property to the residence of the seller, and IRC §865(g)(1) treats a US citizen as a US resident for this purpose unless they have a foreign tax home. Even then, IRC §865(g)(2) provides that a US citizen is not treated as a nonresident on a sale unless foreign income tax of at least 10 percent of the gain is actually paid to a foreign country on that gain. In a low-tax jurisdiction, that test fails and the gain stays US-source, leaving no foreign-source income in the basket against which to claim a credit.
Does Medicare Cover You Overseas?
Generally not. Under 42 U.S.C. §1395y(a)(4), Medicare does not pay for items and services furnished outside the United States, with only a narrow inpatient-hospital exception. For most retirees living abroad full time, Medicare Part B buys nothing usable.
That makes dropping Part B look obviously correct, and it is the decision most retirees get wrong. Under 42 U.S.C. §1395r(b), the Part B late enrollment penalty is 10 percent of the premium for each full 12 months you were eligible but not enrolled, and it is added to the premium permanently, not for a catch-up period. A retiree who drops Part B at 66 and returns to the US at 76 faces a premium inflated by roughly 100 percent for the rest of their life. Part A, by contrast, is premium-free for most people with sufficient work credits, so there is rarely a reason to consider giving it up, and in practice anyone collecting Social Security cannot drop it without withdrawing their benefit application and repaying benefits already received.
The right way to frame it is as a bet on whether you will ever return to the US for care. Dropping Part B is cheap now and expensive later. Anyone who might repatriate, or who wants US care available for a serious diagnosis, should price the penalty before cancelling, and should confirm with SSA whether any special enrollment period is available in their circumstances rather than assuming one exists.
Does Your State Still Tax You After You Move Abroad?
Possibly, and this is where retirees are caught most often. Leaving the country does not automatically end state residency, because states apply their own domicile tests that look at intent and connections rather than at where you physically are. A few states are notably aggressive about treating a departure as temporary until you prove otherwise.
Because the analysis is state-specific and turns on facts like property, voter registration, licenses, and family ties, we cover it separately in our guide to state taxes when living abroad. Severing state residency is generally something to do deliberately before you leave, not to argue about years later.
What Foreign Reporting Does Retiring Abroad Trigger?
Three obligations attach almost immediately, and the third is the most damaging.
The Compliance Overlay for Retirees Abroad
Caution- FBAR (FinCEN Form 114): required when foreign financial accounts exceed $10,000 in aggregate at any point during the year. Most retirees cross this the moment they fund a local account for living expenses or a property purchase. See our FBAR filing guide.
- Form 8938 (FATCA): reports specified foreign financial assets. The thresholds are higher for taxpayers whose tax home is abroad, but foreign pensions and non-account assets can count. Details on the Form 8938 page.
- PFIC (Form 8621): this is the self-inflicted wound. Nearly every foreign mutual fund, ETF, and local pooled investment product is a passive foreign investment company. Under the default IRC §1291 excess distribution regime, gains and excess distributions are allocated ratably across your holding period; the slice allocated to prior PFIC years is taxed at the highest ordinary rate in effect for each of those years and carries an interest charge, while the current-year slice is ordinary income at your own rate. Reporting is generally required per fund, per year, though Reg. §1.1298-1(c)(2) provides a narrow exception where aggregate PFIC value stays at or below $25,000 ($50,000 on a joint return) and no excess distribution or disposition gain arises. See our PFIC and Form 8621 guide.
The PFIC problem is almost entirely avoidable and almost never avoided, because a retiree opens a local brokerage account, a local advisor recommends a perfectly ordinary domestic fund, and the US tax consequence is invisible until the first return is prepared. Holding US-domiciled funds in a US brokerage account and taking income out of them sidesteps the regime entirely. Deadlines matter too, since the automatic extension available to taxpayers abroad has conditions attached; see our guide to expat tax deadlines and extensions.
Bottom Line
Retiring abroad is not a filing question, it is an income-source question. Social Security follows IRC §86 for citizens and a flat 25.5 percent effective rate for nonresident aliens, retirement plan distributions stay fully US-taxable and are US-source for credit purposes, pensions and investment income depend on the specific treaty article, and Medicare and state residency are decisions best made before departure rather than after. The compliance overlay of FBAR, Form 8938, and PFIC reporting attaches quietly and grows expensive when ignored.
Our international tax and cross-border tax teams model each income stream against the applicable sourcing and treaty rules so the plan is built before the move, not reconstructed afterward. Have questions about retiring abroad and how your retirement income will be taxed? Contact TS CPA for a free consultation. We respond within the same day.