US Tax CPA for Americans in Portugal

It can do both, and which one wins is a US calculation. Any regime that lowers the Portuguese tax on your income lowers the foreign tax credit you can claim, because the IRS credits only tax you actually paid. The United States taxes its citizens on worldwide income either way, so relief in Portugal can simply move the tax to the IRS.

It is not always the wrong answer — US rates or timing may suit you. But it should be a calculation before your Portuguese return is filed, not a discovery afterwards. Your Portuguese adviser makes the claim; we tell you what it costs on the American return.

The US side, and only the US side. We are a US CPA practice: we prepare the 1040 and the international schedules that go with a life abroad, run the elections and credit calculations, and handle the account and pension reporting. We do not prepare Portugal returns and we are not Portuguese tax advisers.

What we do bring is the American consequence of your Portuguese decisions, which is the part that usually goes unexamined. Where you have a local accountant we coordinate with them so both returns tell the same story. More detail: our US expat tax guide, our international tax services, and expat support in other countries.

Your US filing obligation does not change — it never depended on your Portuguese status. What changes is the arithmetic underneath it. More Portuguese tax paid means more foreign tax credit available; less means less, and the US charge on the same income stands either way.

So a change in your local position is a reason to revisit the US side, not a reason to assume it is handled. That is the review we would do first.

A foreign corporation is a passive foreign investment company if 75% or more of its gross income is passive, or at least 50% of its average assets produce passive income. A Portuguese fund will typically meet one of those tests.

Without a qualified electing fund or mark-to-market election, distributions and gains fall into the section 1291 excess distribution rules, which throw the gain back over your holding period and add an interest charge. Each holding is reported separately on Form 8621 — so a portfolio assembled sensibly by a local adviser can produce a long and expensive US filing.

It depends on how much local tax you actually pay. The foreign earned income exclusion covers up to $132,900 of earned income for 2026 but does nothing for investment income, and taking it means the foreign tax paid on the excluded income is not creditable. The credit has no such ceiling but only helps to the extent local tax was paid.

In a high-tax year the credit usually wins and builds carryforwards. In a year where a local regime has sheltered your income, neither does much, and the US bill is simply the US bill. We run it both ways.

Yes, and it catches people out. The unlimited marital deduction that lets one US spouse leave everything to the other does not apply where the recipient spouse is not a US citizen. Lifetime gifts to such a spouse are limited to an annual exclusion of $194,000 for 2026, and transfers at death generally need a qualified domestic trust if the tax is to be deferred. Worth planning years ahead.

The Streamlined Foreign Offshore Procedures exist for exactly this. They require three years of returns, six years of FBARs, and a certification that the failure was non-willful — due to negligence, inadvertence, mistake, or a good faith misunderstanding of the law — along with physical presence outside the United States for at least 330 full days in one of the relevant years.

Where the requirements are met, the IRS states the taxpayer will not be subject to failure-to-file and failure-to-pay penalties, accuracy-related penalties, information return penalties, or FBAR penalties. Most people who simply did not know are eligible.