At a glance
- Thirty countries have one in force, and Romania’s carries an effective date of September 1, 2026. Most of the world does not, including Mexico, South Africa and every country in the Gulf.
- For a self-employed American it is the largest number on the return. On $150,000 of profit an agreement is worth $21,194, because the foreign earned income exclusion does nothing for self-employment tax.
- The exemption is not automatic. It is claimed with a certificate of coverage from the country that keeps you, and it has to exist before the return is filed.
- The WEP is gone. The Social Security Fairness Act repealed the Windfall Elimination Provision for benefits payable from January 2024, which removes the old penalty for having a foreign pension.
A totalization agreement is a treaty between the United States and one other country that decides which of the two social security systems covers you, so that only one of them does. Without one, an American working abroad can be inside both systems at once — and paying into both.
They are not tax treaties — and they do not overlap with them. A tax treaty allocates income tax. A totalization agreement allocates social security tax, which for a self-employed person abroad is frequently the larger of the two.
Which countries have one
Thirty agreements are in force. The Social Security Administration publishes the list and the dates; Romania signed in March 2023 with an effective date of September 1, 2026, and the agency’s own pages have not caught up consistently, so check the status table before relying on it for a current assignment.
| Country | In force since | Country | In force since |
|---|---|---|---|
| Italy | November 1, 1978 | Greece | September 1, 1994 |
| Germany | December 1, 1979 | South Korea | April 1, 2001 |
| Switzerland | November 1, 1980 | Chile | December 1, 2001 |
| Belgium | July 1, 1984 | Australia | October 1, 2002 |
| Norway | July 1, 1984 | Japan | October 1, 2005 |
| Canada | August 1, 1984 | Denmark | October 1, 2008 |
| United Kingdom | January 1, 1985 | Czech Republic | January 1, 2009 |
| Sweden | January 1, 1987 | Poland | March 1, 2009 |
| Spain | April 1, 1988 | Slovak Republic | May 1, 2014 |
| France | July 1, 1988 | Hungary | September 1, 2016 |
| Portugal | August 1, 1989 | Brazil | October 1, 2018 |
| Netherlands | November 1, 1990 | Uruguay | November 1, 2018 |
| Austria | November 1, 1991 | Slovenia | February 1, 2019 |
| Finland | November 1, 1992 | Iceland | March 1, 2019 |
| Ireland | September 1, 1993 | Romania | September 1, 2026 |
| Luxembourg | November 1, 1993 |
The list is mostly Western Europe plus a handful of others — and the gaps matter more than the entries. Mexico does not appear at all. Neither does South Africa, India, China, Singapore, the United Arab Emirates, Saudi Arabia, Israel, Thailand, Indonesia, Colombia or Costa Rica. An American self-employed in any of those countries owes US self-employment tax on their worldwide net earnings, with no relief available and no election that changes it.
What an agreement is worth to a self-employed American
If you read nothing else, read this. It is the number the exclusion does not touch.
Section 911 excludes foreign earned income for income tax. It does nothing to self-employment tax, so a freelancer abroad can owe zero income tax and still owe 15.3% on net earnings. An agreement is the only thing that reaches it.
A consultant with $150,000 of net profit from self-employment, living abroad. Figures are illustrative and rounded.
| On the return | No agreement | Agreement, with a certificate |
|---|---|---|
| Net profit from self-employment | $150,000 | $150,000 |
| Net earnings subject to the tax, 92.35% | $138,525 | — |
| US self-employment tax at 15.3% | $21,194 | $0 |
| Foreign earned income exclusion applied | Yes | Yes |
| US income tax after the exclusion | $0 | $0 |
| Total US tax | $21,194 | $0 |
$21,194 of difference on identical facts, decided entirely by a piece of paper. You do pay into the other country’s system instead, so this is not free money; it is the difference between paying once and paying twice. What makes it worth attention is that the first column is the default — not the second. Nobody applies the agreement for you.
The one-line version. The exclusion handles income tax. Only an agreement handles self-employment tax, and for most freelancers abroad that is the bigger of the two. Figures are illustrative.
Which country covers you
The default for an employee is territoriality: you are covered where you work. The exception is the detached-worker rule, and it is the one most assignments run on. “If your employer sends you from one Agreement country to another Agreement country for five years or fewer, you will continue to be covered by your home country.” An American posted to Frankfurt for three years stays in the US system and pays nothing into the German one. At five years and a day the answer flips — there is no gradient.
For the self-employed the starting point is different and worth stating plainly, because it surprises people: “In general, U.S. Social Security covers self-employed workers if they are U.S. citizens or resident non-U.S. citizens, even if they live and work outside the United States.” Living abroad does not remove you from the US system. An agreement is what moves you, usually to the country where you live and work, and the certificate is what proves it.
The certificate of coverage
An exemption without documentation is a filing position — waiting to be questioned. The SSA is direct about it: “Workers who are exempt from U.S. or foreign Social Security taxes under an agreement must document their exemption by obtaining a certificate of coverage from the country that will continue to cover them.”
- It comes from the country that keeps you, not the one you are leaving. If Portugal covers you, the Portuguese authority issues it.
- Request it before you need it. Foreign agencies are not fast, and the certificate should exist before the return is filed rather than after a notice arrives.
- Keep it with the return. A copy is attached or held with the file depending on the position taken, and either way it is the document that answers the question.
- It is per assignment and per period. A certificate for a three-year posting does not cover the fourth year, and an extension is its own request.
An agreement is not a tax treaty
| Totalization agreement | Income tax treaty | |
|---|---|---|
| What it allocates | Social security and Medicare tax, and self-employment tax | Income tax |
| Who administers it | The Social Security Administration | The IRS and Treasury |
| How you claim it | A certificate of coverage | A treaty position, often Form 8833 |
| Countries covered | Thirty | Considerably more |
| Having one | does not mean having the other. The United Arab Emirates has neither. India has a tax treaty and no totalization agreement. | |
Our plain-English guides to the US-UK treaty and the US-Germany treaty cover the income tax side for two countries that have both.
Benefits: combining credits, and the rule that changed
The second purpose of these agreements is to stop a divided career producing two partial records and no pension from either. Credits earned in an agreement country can be counted toward US eligibility, but there is a floor: “to have your credits in an Agreement country counted, you must have earned at least six credits (generally one and one-half years of work) under the U.S. system.” Below six, the agreement cannot help you qualify.
The Windfall Elimination Provision has been repealed. The Social Security Fairness Act “was signed into law on January 5, 2025” and “ends the Windfall Elimination Provision (WEP) and Government Pension Offset (GPO).” The SSA states that “December 2023 is the last month that WEP and GPO will apply,” so the rules “no longer apply to benefits payable for January 2024 and later.”
For Americans who spent part of a career abroad this is a material change. The WEP used to reduce a US retirement benefit for anyone also receiving a pension from work not covered by US social security, and a foreign state pension counted. Planning written before 2025 assumed that reduction — most of it still does. It no longer applies, and anyone who accepted a lower benefit calculation on that basis should have it looked at again.
What goes wrong
- Assuming the exclusion covered it. The most expensive error on this page. The foreign earned income exclusion is an income tax provision and self-employment tax sits entirely outside it.
- No certificate. The position is taken on the return and the document is never requested, which works until someone asks.
- Assuming a tax treaty implies an agreement. They are separate instruments with separate country lists and separate authorities.
- Missing the five-year edge. An assignment extended from four years to six changes which system covers you, and the change is not retroactive paperwork.
- Treating a no-agreement country as a problem to solve. It is not solvable — not by any election on the return. In Dubai or Johannesburg the self-employment tax is owed, and the planning question becomes entity structure rather than exemption.
What to do about it
- Check the list first. Everything else on this page depends on whether your country is on it, and for roughly three quarters of the world it is not.
- If you are self-employed, request the certificate now. It is the single highest-value piece of paperwork an American freelancer abroad can hold, and the timeline is set by a foreign agency rather than by you.
- Run the two taxes separately. Income tax and self-employment tax are different problems with different solutions. Our guide to the foreign earned income exclusion covers the first one.
- If the WEP reduced your benefit, or a planning projection assumed it would, revisit that calculation. The provision is gone for benefits payable from January 2024.
- Where there is no agreement, restructure rather than hope. The answer is usually about how the business is owned, and it has to be decided before the income is earned.
Frequently asked questions
Which countries have a totalization agreement with the United States?
Thirty are in force: Italy, Germany, Switzerland, Belgium, Norway, Canada, the United Kingdom, Sweden, Spain, France, Portugal, the Netherlands, Austria, Finland, Ireland, Luxembourg, Greece, South Korea, Chile, Australia, Japan, Denmark, the Czech Republic, Poland, the Slovak Republic, Hungary, Brazil, Uruguay, Slovenia and Iceland. Romania signed in March 2023 with an effective date of September 1, 2026. Mexico, South Africa, India, China, Singapore and the Gulf states have none.
Does the United States have a totalization agreement with South Africa?
No. South Africa does not appear on the Social Security Administration’s list of agreements in force or of agreements signed and pending. An American working in South Africa is therefore covered by the US system on the ordinary rules, which for someone self-employed means US self-employment tax on worldwide net earnings with no exemption available. The foreign earned income exclusion does not help, because it is an income tax provision.
Does a totalization agreement eliminate self-employment tax?
It can, and it is the only thing that does. Where an agreement assigns your coverage to the other country, US self-employment tax does not apply, and on $150,000 of net profit that is about $21,194. The exemption is claimed with a certificate of coverage from the country that keeps you. Without an agreement, or without the certificate, the tax is owed regardless of how little US income tax you pay.
What is a certificate of coverage and how do I get one?
It is the document that proves which country’s social security system covers you. The SSA requires that workers exempt under an agreement “must document their exemption by obtaining a certificate of coverage from the country that will continue to cover them,” so if the other country keeps you, its agency issues it. Request it well before the filing deadline, because foreign agencies set their own pace, and treat it as covering one assignment for one period rather than as a standing exemption.
What is the five-year detached worker rule?
It is the exception to the normal rule that you are covered where you work. Where an employer sends you from one agreement country to another for five years or fewer, you stay covered by your home country and pay nothing into the host country’s system. Beyond five years the host country takes over. The number is a threshold rather than a guideline, which matters when a three-year posting quietly becomes a six-year one.
Is a totalization agreement the same as a tax treaty?
No. A tax treaty allocates income tax between two countries and is administered through the IRS. A totalization agreement allocates social security tax and is administered through the Social Security Administration, claimed with a certificate of coverage rather than a treaty position. The country lists differ substantially. India has an income tax treaty with the United States and no totalization agreement, and the United Arab Emirates has neither.
Can I combine US and foreign credits to qualify for a pension?
Yes, that is the second purpose of the agreements, and it is subject to a floor. To have credits from an agreement country counted toward a US benefit, “you must have earned at least six credits (generally one and one-half years of work) under the U.S. system.” Below that the agreement cannot create eligibility. Above it, a divided career can produce a benefit that neither country’s record would support on its own.
Does a foreign pension still reduce my US Social Security?
No, not any more. The Windfall Elimination Provision used to reduce a US benefit for people also receiving a pension from work not covered by US social security, and a foreign state pension counted. The Social Security Fairness Act, signed January 5, 2025, ended both the WEP and the Government Pension Offset. December 2023 was the last month they applied, so they do not affect benefits payable for January 2024 and later. Projections made before 2025 assumed a reduction that no longer exists.
Related reading
- The foreign earned income exclusion. What it covers, and what it misses.
- FEIE or the foreign tax credit. The income tax decision.
- Foreign tax credits. The other side of double taxation.
- The US expat tax guide. Everything in one place.
- Reducing self-employment tax. The domestic version of this problem.
- The US-UK treaty. A country with both instruments.
- The US-Germany treaty. Same, with different arithmetic.
- FBAR or Form 8938. The reporting that runs alongside.
- SEP IRA or solo 401(k). Where a freelancer’s profit goes next.
- International tax services. What we do and what it costs.
Schedule a call
A short conversation about your situation, our read on it, and whether it is a mutual fit. We can tell you whether your country has an agreement, what a certificate would be worth against your actual profit, and what the answer is if it does not.
General information, not advice for your situation. Figures are illustrative. Sources: SSA international agreements overview, SSA agreement status table, SSA agreement descriptions, Social Security Fairness Act and IRC section 1401.
