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US totalization agreement checker
Agreements currently in force
30 agreements, with the date each entered into force. Recorded from the Social Security Administration's published list and re-verified annually.
| Country | In force since |
|---|---|
| Australia | October 2002 |
| Austria | November 1991 |
| Belgium | July 1984 |
| Brazil | October 2018 |
| Canada | August 1984 |
| Chile | December 2001 |
| Czech Republic | January 2009 |
| Denmark | October 2008 |
| Finland | November 1992 |
| France | July 1988 |
| Germany | December 1979 |
| Greece | September 1994 |
| Hungary | September 2016 |
| Iceland | March 2019 |
| Ireland | September 1993 |
| Italy | November 1978 |
| Japan | October 2005 |
| Luxembourg | November 1993 |
| Netherlands | November 1990 |
| Norway | July 1984 |
| Poland | March 2009 |
| Portugal | August 1989 |
| Slovak Republic | May 2014 |
| Slovenia | February 2019 |
| South Korea | April 2001 |
| Spain | April 1988 |
| Sweden | January 1987 |
| Switzerland | November 1980 |
| United Kingdom | January 1985 |
| Uruguay | November 2018 |
Common questions
What is a totalization agreement?
A totalization agreement is a treaty between the United States and another country that assigns social-security coverage for a given worker to exactly one of the two systems, so the same earnings are not charged twice. The United States has 30 such agreements in force. They also let periods of contribution in both countries be combined when testing eligibility for benefits.
Which countries have a US totalization agreement?
Australia, Austria, Belgium, Brazil, Canada, Chile, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Japan, Luxembourg, Netherlands, Norway, Poland, Portugal, Slovak Republic, Slovenia, South Korea, Spain, Sweden, Switzerland, United Kingdom, Uruguay. Agreements enter into force by treaty action, so this list changes; verify at ssa.gov before relying on it.
Does Mexico have a totalization agreement with the US?
No agreement is in force. One was signed in 2004 but has never entered into force, so it gives no relief today. A self-employed US citizen living in Mexico generally owes US self-employment tax in full.
How do I get a certificate of coverage?
If a foreign system covers you, you apply to that country's social security authority. If you are temporarily sent abroad by a US employer and remain in the US system, your employer requests the certificate from the Social Security Administration. Keep the certificate with your tax records — it is the evidence supporting the position taken on your return.
Does a totalization agreement affect my income tax?
No. A totalization agreement deals with social security contributions only. Income tax is governed separately, by the income tax treaty with that country if one exists. You still file a US return and report your worldwide income regardless of any totalization agreement.
How Atamatax calculations are produced — the tests applied, statutory sources and review cadence — is documented in the methodology, and what is and is not reviewed in accuracy & review. Calculation fixes are recorded in the changelog.
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