US Expat Taxable Brokerage Accounts: 2026 Investment Considerations

If you are a US citizen or green card holder living abroad with a taxable brokerage account, five things decide whether that account stays simple or becomes a compliance problem: whether your custodian will keep you as a client, what you hold inside the account, how two countries tax the same dividends and gains, how you track cost basis in dollars, and which forms the account triggers. Here is the 2026 checklist, answer first.

• Custodian first. Keep the account at a US custodian that accepts your country of residence, and tell them your real address. The custodian rules are the first gate; see the 12-custodian hub and the Fidelity page.
• Hold US-domiciled funds. Hold US-domiciled ETFs and individual stocks. Do not buy foreign-domiciled mutual funds or ETFs (UCITS and similar): they are PFICs and carry punitive tax and Form 8621 reporting.
• Expect two tax returns. Expect your country of residence to tax the account too. Use the foreign tax credit (Form 1116) or a treaty position to avoid paying twice on the same income.
• Track cost basis in dollars. Track every purchase in US dollars at the exchange rate on the trade date. Gains are computed in dollars, so currency swings create taxable gains or losses on their own.
• Report foreign accounts. Report the account if it is held abroad: FBAR when foreign accounts total more than $10,000 at any point in the year, and Form 8938 above $200,000 for a single filer living abroad ($400,000 married filing jointly).

US custodians apply country-based restrictions to clients who live outside the United States. The response ranges from full service, to a frozen account that can sell but not buy, to a closure letter with a 30 to 90 day deadline. Fidelity, Schwab, Vanguard, Interactive Brokers and the rest each handle this differently, and the treatment often changes when you update your address. The practical order of operations is: check your custodian's policy for your country before you move, keep a US mailing address only if the custodian's terms actually allow it, and have a second custodian identified in case you receive a closure letter. The hub article covers all twelve major custodians and what to do after a closure letter arrives.

A taxable brokerage account gives you complete choice of holdings, and that is where most expats make their costliest mistake. Any mutual fund, ETF or money market fund domiciled outside the United States is a passive foreign investment company (PFIC) in the eyes of the IRS. PFIC income is taxed at the highest ordinary rate with an interest charge on deferred gains, and each fund needs its own Form 8621 every year. A single UCITS ETF bought through a European broker can cost more in accounting fees than it earns.

The fix is simple: hold US-domiciled ETFs, US mutual funds and individual stocks and bonds. If you already own foreign funds, read PFIC tax solutions for the QEF and mark-to-market elections that limit the damage, and What is a PFIC for the definitions. Note that some countries of residence apply their own unfavorable rules to US-domiciled funds (the UK's reporting fund regime is the best known example), so the ideal holding is often a US-domiciled ETF that also has the local status you need.

The United States taxes citizens on worldwide income wherever they live, and your country of residence almost always taxes investment income of residents. The same dividend or capital gain therefore appears on two returns. Three mechanisms keep you from paying twice:

• The foreign tax credit (Form 1116) credits tax paid to your residence country against US tax on the same category of income. For most expats with investment income this credit, not the foreign earned income exclusion, is the tool that matters, because the exclusion only covers earned income.
• Tax treaties assign taxing rights and cap withholding. Under most US treaties, capital gains on securities are taxable only in the country of residence, while dividends can be taxed by both with a credit. A treaty position on the US return is claimed on Form 8833 where required.
• Qualified dividend and long-term capital gain rates (0%, 15% or 20% depending on income) still apply to expats, and the holding period rules are unchanged by residence.

One item the credit cannot fix: the 3.8% net investment income tax generally cannot be offset by foreign tax credits under the Internal Revenue Code, although treaty-based claims have succeeded for some countries. Country specifics matter enormously here. For the UK, including the remittance basis changes and the reporting fund issue, see US-UK taxes for expats.

Reviewer note, delete before publish: confirm the current status of treaty-based NIIT credit claims after the Christensen and Bruyea cases.

US tax is computed in US dollars. If you fund a brokerage account from euros or pounds, every purchase has a dollar cost basis fixed on the trade date, and every sale is measured in dollars on the sale date. A position that is flat in local currency can show a dollar gain or loss purely from exchange rate movement. Keep your own trade-date exchange rate log if your custodian reports in another currency. Wash sale rules apply worldwide: selling a US ETF at a loss and buying a substantially identical fund within 30 days, in any account including a foreign one, disallows the loss. Your residence country may run its own matching rules with different windows (the UK's 30-day rule and share pooling are the common example), so a trade that is clean in one system can be caught in the other.

• FBAR (FinCEN Form 114): required when the total value of all foreign financial accounts exceeds $10,000 at any point in the year. A brokerage account at a US custodian is not a foreign account; one at a foreign broker is.
• Form 8938 (FATCA): for taxpayers living abroad, required when specified foreign financial assets exceed $200,000 at year end or $300,000 at any time for single filers, and $400,000 or $600,000 for married filing jointly.
• Form 8621: one per PFIC per year, regardless of value in most cases.
• Form 1116 and Form 8833: the foreign tax credit form and, where a treaty position is taken, the treaty disclosure form.
• Local declarations: Spain's Modelo 720 for foreign assets above 50,000 euros per category, for example.

Reviewer note, delete before publish: confirm the Modelo 720 thresholds and the current penalty regime for 2026.

The FBAR and FATCA filing guide walks through thresholds and deadlines, and the 2026 US expat tax guide covers the rest of the return.

The long-term capital gain rate brackets, the standard deduction and the Form 8938 thresholds are the numbers most likely to move. Custodian policies also changed during 2025 and 2026, with several firms tightening residency rules; the hub article is updated as closure letters are reported. If you are planning a move, the safest sequence is: confirm custodian policy, sell any foreign funds before you become a US tax resident or before year end, document cost basis in dollars, and set your calendar for FBAR (April 15, automatic extension to October 15) and your local filing deadline.

Reviewer note, delete before publish: check each figure in this section against the 2026 inflation adjustments.

Can a US expat keep a taxable brokerage account in the United States?

Usually yes, but it depends on the custodian and your country of residence. Some firms serve expats fully, some restrict trading, and some close accounts. Check the policy before you move and keep a backup custodian in mind.

What should a US expat hold in a taxable brokerage account?

US-domiciled ETFs, US mutual funds and individual securities. Avoid foreign-domiciled funds because they are PFICs.

Do US expats pay capital gains tax twice?

Not if the foreign tax credit or a treaty is applied correctly. Most treaties give the residence country the primary right to tax securities gains, and the US credits foreign tax paid on the same income.

Does a US brokerage account need to be reported on FBAR?

No. FBAR covers foreign financial accounts. A brokerage account at a foreign broker does count, and the $10,000 threshold applies to all foreign accounts combined.

Are there restrictions on options trading for international investors using a US brokerage?

Yes at many custodians. Options and margin approvals are often withdrawn for non-US residents even when the cash account stays open. Confirm the custodian's policy for your country.

Aequify pulls your accounts in the US and abroad into one view, flags PFIC holdings and reporting thresholds automatically, and produces tax-ready data packs for your US and local advisors. If you are moving countries, the scenario planner shows what the same portfolio costs under each residence before you decide.

This article provides general information and is not tax, legal or investment advice. Rules vary by country, account type and individual circumstances. Confirm current thresholds and custodian policies with qualified advisers before acting.