Last Updated on 26th October 2026
American expats may have spent decades building their retirement savings. Understanding how a move to Portugal may affect those retirement savings is essential, given the potential for financial complications they might not have anticipated.
US citizens will need to understand when and how to access 401(k)s or IRAs, how those accounts may be taxed in Portugal, what their ongoing reporting obligations look like in both countries, and whether their projected retirement income will support the lifestyle they expect.
While tax is, of course, highly relevant, it’s equally important that US citizens recognise that their retirement plans and income may be affected by multiple variables, including their tax residency position, exchange rates and long-term financial objectives.
For US citizens planning to move to Portugal, we’ve shared some key considerations to keep in mind.
Why Can Moving to Portugal Make US Retirement Accounts More Complicated?
The American citizenship-based tax system contrasts with the residency-based regimes in Portugal and across much of Europe.
While that doesn’t mean US expats with retirement accounts can’t relocate and draw on their funds, it does mean there are complexities they should be aware of before making any irreversible decisions. They include factors like:
- Understanding how changes in tax residency may mean American expats become obligated to file returns and pay taxes in Portugal while also complying with IRS requirements.
- Navigating two different tax systems simultaneously, identifying where each income source may be taxable, and reviewing potential ways to offset double taxation where they arise.
- Looking at how the Portuguese tax system treats US retirement accounts and how this treatment may differ from that applied to other pension structures.
- Identifying exchange rate considerations, where incomes originating in US dollars may need to be converted into euros to enable expats to manage their living expenses.
- Recognising that the US tax-free treatment of qualifying Roth account withdrawals may not be replicated in Portugal. The Portuguese classification and taxation of Roth accounts and their distributions should be confirmed separately, as the US treatment does not automatically determine how the account or its withdrawals will be treated under Portuguese tax rules.
In short, becoming an overseas tax resident typically means compliance obligations, tax planning and financial decision-making become more involved for US expats, and that there are more variables they may need to incorporate into their financial planning.
How Is Overseas Retirement Income Taxed in Portugal?
Portuguese treatment may depend on the type of US account, including whether it is a traditional or Roth IRA, the legal nature of the arrangement and how contributions, investment growth and distributions are classified under Portuguese rules.
Generally, US citizens need to meet IRS filing obligations wherever they live, but tax liabilities depend heavily on how the income is treated, where the pension is based and whether tax is deducted at source.
Where a distribution is subject to US tax or withholding, the interaction with Portuguese taxation, treaty provisions and any available foreign tax credit should be reviewed carefully.
Depending on their circumstances, individuals may consider retaining, consolidating or changing existing arrangements. Any change should take account of provider restrictions, investment options, charges, potential tax consequences and the loss of existing benefits or protections.
Further considerations include potential exposure to US withholding taxes and the currency risk associated with receiving retirement income in USD for euro-based budgets.
Why Timing Matters When Drawing Retirement Income
Timings are just as influential as the types of US-based retirement accounts expats might hold, and taxation will naturally vary between lump-sum drawdowns and regular withdrawals, especially when comparing options to draw pension funds before or after a relocation.
This can be further affected by exchange rates, the individual’s overall income and tax exposure, the point within the tax year when retirement accounts are accessed, and the time at which a US expat becomes a Portuguese tax resident.
Although the US and Portuguese tax authorities both operate on calendar years, filing windows and deadlines are not the same.
A move during the year can result in partial-year Portuguese tax residence and different filing periods in the two countries. The date on which Portuguese residence begins may affect the treatment of transactions or withdrawals, but residence is determined by the applicable facts and statutory tests. Advice should therefore be obtained before completing significant transactions.
Guidance on Retiring in Portugal With US-Based Accounts
Decisions about overseas retirement accounts rarely exist in isolation. The timing of withdrawals, the choice of investment structures, anticipated retirement income and future residency plans all impact one another.
Looking at each decision as part of a wider financial plan often provides greater flexibility than considering tax implications alone.
Prospective expats should also, as just a few examples, consider succession planning, investment risks, inflation, currency exchange rates, healthcare costs and their anticipated lifestyle, alongside the real-world value of their retirement accounts.
American citizens planning their retirement budgets in euros while holding assets denominated in US dollars may need to think about exchange-rate movements and how they could affect the purchasing power of regular withdrawals over time.
How to Access Professional Support With Cross-Border Retirement Planning
Moving to Portugal doesn’t necessarily mean changing every aspect of your retirement plans, but it does mean reviewing whether arrangements that worked well in the United States remain appropriate once you become an overseas resident.
Taking the time to understand the interaction between tax residency, retirement income, currency exposure, and long-term financial goals can help avoid unnecessary complications later on.
If you’re considering relocating to Portugal or are preparing to draw on US-based retirement accounts while living overseas, speaking to an adviser experienced in cross-border financial planning can help you understand how these decisions fit into your broader financial strategy.
Where specialist US or Portuguese tax advice is required, this should be sought separately to ensure your plans reflect your individual circumstances.
© Chase Buchanan Private Wealth Management.
Chase Buchanan Ltd is authorised and regulated by the Cyprus Securities and Exchange Commission with CIF Licence 287/15 and offers its services in the EU on a cross-border basis as per the provisions of MiFID.
Chase Buchanan Insurance Services, Agents & Advisors is authorised and regulated by the Cyprus Insurance Companies Control Service with License No 6883 and offers services in the EU on a cross-border basis as per the provisions of the Insurance Distribution Directive (IDD).
Investing in financial instruments involves risk and may not be suitable for all investors. The value of investments may go up as well as down and past performance is not a reliable indicator of future results. You may lose part or all of your invested capital.
*Information correct as at October 2026
