Do Americans pay US taxes on foreign remote income?

The short answer

Yes. The United States is one of the only countries in the world that taxes its citizens on worldwide income regardless of where they live or where the income is earned. An American working remote for a foreign company pays US federal income tax on the full income. State income tax usually applies too. Self-employment tax applies if you're a contractor. Tax treaties and the Foreign Tax Credit prevent most double taxation, but they do not eliminate the US filing obligation.

This is true whether you live in Ohio or Portugal.

Citizenship-based taxation (the thing that makes US different)

Most countries use residence-based taxation: if you don't live there, you don't owe tax there. The US uses citizenship-based taxation: if you are a US citizen or green card holder, you owe US tax on worldwide income — forever — regardless of residence.

This means:

• If you live in the US and earn from a foreign employer: US tax applies.
• If you live abroad and earn from a foreign employer: US tax still applies (though FEIE may offset much of it).
• If you renounce citizenship: there is a one-time expatriation tax for higher-net-worth individuals.

The only countries with similar systems are Eritrea and, inconsistently, a few others. It's a structural fact of being American, not a loophole.

If you live in the US and work remote for a foreign company

The taxes break down:

• Federal income tax on the full gross income, at your marginal rate.
• State income tax if your state has one. Nine states don't: AK, FL, NV, SD, TN, TX, WA, WY, plus NH (which taxes only investment income). California, New York, Oregon, and Hawaii are the most aggressive.
• Self-employment tax if you're a contractor: 15.3% on the first ~$168,600 (2024 Social Security wage base), then 2.9% Medicare on amounts above. This replaces the combined FICA the employer would have withheld if you were a W-2.
• Quarterly estimated payments. Because no one withholds for you, the IRS expects quarterly payments on Form 1040-ES. Missing them triggers an underpayment penalty.

No Foreign Earned Income Exclusion applies here. FEIE requires physical presence abroad. If you live in the US, you owe full US tax.

If you live abroad and work remote for a foreign company

Two important provisions may reduce your US tax:

Foreign Earned Income Exclusion (FEIE)

If you qualify (physical presence 330+ days in a 12-month period abroad, or bona fide residence in a foreign country for a full tax year), you can exclude up to $126,500 (2024) of foreign-earned income from US federal income tax. Claimed on Form 2555.

FEIE does not exclude self-employment tax. It does not cover state tax, though most states follow federal on expats if you've severed residency.

Foreign Tax Credit (FTC)

If the foreign country taxed the same income, you claim a credit against your US tax. Form 1116. Usually better than FEIE if the foreign country's rates exceed US rates; FEIE is better if the foreign country's rates are low or zero.

You generally cannot stack both on the same income, but you can split — FEIE up to the exclusion, FTC on the excess.

State tax complications

Leaving the US does not automatically end state tax obligations. States like California and New York are aggressive about claiming you never really left. Indicators they use: driver's license, voter registration, mailing address, property, bank accounts, family ties.

If you plan to work abroad long-term, formally establish domicile in a no-tax state before leaving. Drop your driver's license, register to vote elsewhere, use a mail-forwarding service. Otherwise your high-tax state may claim you for years.

The reporting obligations that surprise people

Beyond income tax, US citizens working abroad or with foreign accounts face additional reporting:

• FBAR (FinCEN 114): Required if any foreign financial accounts held more than $10,000 at any point during the year — aggregated. Reports the accounts, not the income. Severe penalties for non-filing.
• FATCA (Form 8938): Required at higher thresholds ($50K+ for single filers in the US, higher for joint or abroad). Reports foreign financial assets to the IRS.
• Form 5471: Required if you own 10%+ of a foreign corporation — for example, if you set up a local company abroad for your contracting. Complex and expensive to prepare.
• Form 8865: For foreign partnerships.

These are not optional. The IRS enforces them via information-sharing agreements with most major jurisdictions.

Tax treaties

The US has tax treaties with most developed countries. Treaties determine which country has primary taxing rights over specific income types, and provide mechanisms to avoid double taxation. They do not exempt US citizens from filing. The "saving clause" in most US treaties preserves the US right to tax its citizens regardless of treaty terms.

Treaties matter most when foreign withholding applies. They can reduce or eliminate foreign tax, leaving only the US obligation.

What to do

• Get an accountant experienced with expat or foreign-source income. This is not a H&R Block situation.
• Track income in USD at the payment-date exchange rate. IRS rules require it.
• Pay quarterly estimated taxes — federal and state if applicable.
• File FBAR every year if thresholds are met.
• Keep all foreign contracts and invoices for at least 7 years.

The bottom line

Yes, Americans pay US taxes on foreign remote income. Citizenship-based taxation means you owe regardless of residence. Living in the US: full federal, state, and SE tax. Living abroad: FEIE or FTC can offset most federal tax but not SE tax. The reporting burden (FBAR, FATCA) is real and non-optional. Get an accountant before year one, not after.