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Self-Employed Abroad: Totalization Agreements Explained
Short answer: The foreign earned income exclusion does not reduce self-employment tax. A totalization agreement can stop two countries taxing the same work for social security, but only 31 countries have one with the US. Mexico, Colombia, the UAE and Costa Rica do not.
Key takeaways
The foreign earned income exclusion lowers income tax only, not self-employment tax.
If your net earnings from self-employment are $400 or more, you must file a US return.
A totalization agreement assigns your social security coverage to one country instead of two.
The SSA list shows 31 countries with an agreement in force as of September 17, 2026.
Mexico, Colombia, the UAE and Costa Rica are not on that list, so there is no agreement to rely on.
The exclusion does not reduce self-employment tax
Many freelancers abroad hear that the foreign earned income exclusion makes their income "tax free." That is only half the picture. You can claim the exclusion on self-employment income, but the IRS says it will not reduce your self-employment tax.
In plain terms, you may owe self-employment tax on income you excluded from income tax. If you are self-employed, you may be able to claim the foreign housing deduction instead of the housing exclusion. Which one fits depends on your facts.
Our FEIE guide covers the exclusion itself. This page is about the social security side, which is where many freelancers abroad get surprised.
The $400 filing trigger
Self-employed people must file when net earnings from self-employment are $400 or more. That is a much lower bar than the general gross income threshold.
Excluded income also still counts for the filing test. So a freelancer who excludes everything from income tax can still have a US return to file.
What a totalization agreement does
A totalization agreement is a treaty between the US and another country about social security. It does two main things:
It eliminates dual social security coverage and taxation, by assigning a worker's coverage to one country's system.
It lets workers combine credits from both countries toward benefits.
The IRS puts the general rule this way: you will only be subject to social security taxes in the country where you are working. A worker temporarily sent abroad can generally stay covered only by US social security.
What a certificate of coverage is
A certificate of coverage is a statement from the Social Security Administration. In the IRS description, an employer obtains it for a worker who stays under US social security while working abroad. It shows that the pay is subject only to US social security and exempt from the foreign country's system. It is requested from SSA's Office of Earnings and International Operations.
The reverse case also has paperwork. If you work permanently in an agreement country and are exempt from US social security tax, you or your employer should get a statement from the foreign country's authorized agency verifying foreign coverage. The employer keeps it.
IRS guidance describes these documents in terms of employers. If you work for yourself, how the paperwork applies to you is something to sort out before you file, not after.
How many countries, and which ones
The SSA Program Operations Manual (GN 01701.005, version effective September 17, 2026) lists 31 countries with totalization agreements in force. The newest is Romania, effective September 1, 2026.
The 31 countries are:
Australia, Austria, Belgium, Brazil, Canada, Chile
Czech Republic, Denmark, Finland, France, Germany, Greece
Hungary, Iceland, Ireland, Italy, Japan, Korea (South)
Luxembourg, Netherlands, Norway, Poland, Portugal, Romania
Slovak Republic, Slovenia, Spain, Sweden, Switzerland, United Kingdom, Uruguay
Each agreement has its own details. The IRS points readers to SSA's agreement descriptions page (ssa.gov/international/agreement_descriptions.html) and to IRS.gov/TotalizationAgreements. The list can change, so check it before you rely on it.
Mexico, Colombia, the UAE and Costa Rica
None of these four countries is on the SSA in-force list. That means there is no totalization agreement to rely on for work done there.
In plain terms, the rule that assigns your coverage to a single country is not available. Both the US system and the local system may apply to the same income. We review each case separately, because the answer depends on how you work, where you work, and how you are set up locally. Do not assume either system is off the table until someone has looked at your facts.
If you are in one of these countries, our guides for Costa Rica and Colombia cover the wider US tax picture.
How we help
Sabih Shafi is an IRS Enrolled Agent, federally licensed to represent taxpayers before the IRS in all 50 states. We work with self-employed Americans abroad, in English or Spanish, entirely remotely.
We:
Prepare your US return, including your self-employment tax
Check whether your country is on the SSA list
Run the exclusion and the foreign tax credit, and look at the housing deduction if you are self-employed
Quote a flat fee in writing before any work starts
Explain in plain words what you owe and why, before you file
The free review is 20 minutes. Call or text (323) 900-0305, or book a free 20-minute tax review. Los Angeles is our base, but we serve Americans in all 50 states and abroad. You can verify any preparer at the IRS Return Preparer Office directory.
General information, not tax advice for your situation.
Frequently Asked Questions
Does the foreign earned income exclusion reduce self-employment tax?
No. The IRS says it will not reduce your self-employment tax. You can claim the exclusion on self-employment income, but it lowers income tax only.
What is a totalization agreement?
It is a social security agreement between the US and another country. It eliminates dual coverage and taxation by assigning a worker to one country's system, and it lets workers combine credits from both countries toward benefits.
How many countries have a totalization agreement with the US?
The SSA Program Operations Manual lists 31 countries with agreements in force, in the version effective September 17, 2026. The newest is Romania, effective September 1, 2026.
I live in Mexico, Colombia, the UAE or Costa Rica. Is there an agreement?
No. None of these is on the SSA in-force list. Both countries' systems may apply to your work, so we review your situation case by case.
What is a certificate of coverage?
It is an SSA statement showing that pay in a foreign country is subject only to US social security and exempt from foreign social security. The IRS describes an employer obtaining it for a worker who stays under US coverage.
Do I have to file if I earn very little self-employment income abroad?
If your net earnings from self-employment are $400 or more, you must file. Income you can exclude still counts toward the general filing test.
Last reviewed: October 2026 by Sabih Shafi, EA
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This article is general information, not individual tax advice. If you want to talk through your own IRS or state balance, book a free 20-minute review or call or text us directly.
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