Bilateral Social Security agreements, often called totalization agreements, are treaties that let people who split their careers between the United States and another country avoid paying social security taxes to both systems at once and combine their work credits to qualify for benefits they would otherwise lose. The United States currently has these agreements in force with 30 countries. Section 233 of the Social Security Act, codified at 42 U.S.C. ยง 433, gives the President authority to negotiate them.1Office of the Law Revision Counsel. 42 USC 433 – International Agreements
Two problems drive the whole system. First, without an agreement, a worker sent abroad can owe payroll taxes in both countries on the same earnings, adding roughly 15 to 25 percent to the combined tax burden depending on the country. Second, workers who split a career across borders often fall short of the minimum coverage each country requires and end up with nothing to show for decades of contributions.2Social Security Administration. U.S. International Social Security Agreements
Which Countries Have Agreements With the U.S.
The 30 partner countries are 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, and Uruguay. The most recent, with Iceland, entered into force on March 1, 2019.3Social Security Administration. Status of Totalization Agreements
Several countries with large expatriate populations, including China, India, and Mexico, are not on the list. If you earned foreign credits in a country without an agreement, totalization is not available and you have to meet each country’s eligibility rules independently. Each treaty is also its own document, so covered benefits vary: most address retirement and survivor benefits, and some also cover disability.
Ending Dual Social Security Taxes
The default rule under every agreement is territorial. You pay into the system of the country where you actually perform the work. Live and work in Germany, and you pay into the German system rather than the American one.2Social Security Administration. U.S. International Social Security Agreements
The important exception is the detached worker rule. If a U.S. employer sends you abroad on an assignment expected to last five years or less, you stay covered exclusively by the U.S. system, and the foreign country waives its payroll tax. That keeps short-term expatriates from fragmenting their coverage across systems for a temporary posting.
Self-Employed Workers
Self-employed people face a higher risk of dual taxation because the United States taxes the self-employment income of its citizens and residents regardless of where the work happens. Most agreements assign self-employed coverage based on country of residence. Some allow a temporary transfer similar to the detached worker rule. Because the specifics vary, check the actual treaty for the country where you work before assuming which system applies.
Getting a Certificate of Coverage
A Certificate of Coverage is the document that proves you are exempt from foreign social security taxes under an agreement. Without it, the foreign tax authority has no reason to honor the exemption. If your employer sends you to a treaty country on a temporary assignment, the employer should request the certificate from the SSA before you leave or shortly after arrival.
The SSA runs an online portal that is the fastest route for both employers and self-employed applicants. Requests can also go by mail or fax to the Office of Earnings and International Operations in Baltimore. For help with the online system, the SSA can be reached at (410) 965-7306 on weekdays from 8 a.m. to 3 p.m. Eastern, or at certificate@ssa.gov.4Social Security Administration. Certificate of Coverage
Combining Credits to Qualify for Benefits
To collect U.S. Social Security retirement benefits on your own, you normally need 40 credits, roughly ten years of covered work.5Social Security Administration. Social Security Credits and Benefit Eligibility Someone who worked seven years in the U.S. and eight in Canada could fall short in both countries despite a 15-year career.
Totalization closes that gap. If you have at least six quarters of U.S. coverage but not enough to qualify on your own, the SSA can count your work periods in the treaty country toward the U.S. eligibility threshold.2Social Security Administration. U.S. International Social Security Agreements The foreign credits do not increase your U.S. benefit the way American earnings would. They only help you clear the eligibility hurdle. Each country then pays its own partial benefit based on the work actually performed under its system.
How the Partial Benefit Is Calculated
The SSA uses a pro-rata method set out in federal regulations. The agency first builds a theoretical earnings record as if you had earned at your U.S. level throughout your entire working life, then computes a theoretical primary insurance amount from that hypothetical full-career record. It multiplies that figure by a fraction: your actual U.S. quarters of coverage divided by the total calendar quarters in your coverage lifetime.6eCFR. 20 CFR Part 404 Subpart T – Totalization Agreements The result reflects the share of your career spent under the U.S. system.
A safeguard is built in. The pro-rata benefit cannot exceed what you would have received if you had qualified for U.S. benefits entirely on your own. In practice, workers with substantial U.S. earnings histories get the same benefit either way, and totalization makes a real difference mainly for people who would not have qualified at all.
The WEP Exception You Should Know
The Windfall Elimination Provision normally reduces Social Security benefits for people who also receive a pension from work not covered by Social Security, and foreign government pensions can trigger it. There is a specific statutory exception: WEP does not apply to foreign pension payments received after 1994 that are based on a totalization agreement with the United States.7Social Security Administration. POMS RS 00605.362 – Windfall Elimination Provision Exceptions
If your foreign pension was independently earned and has nothing to do with a totalization agreement, WEP can still reduce your U.S. benefit. If the foreign pension was calculated using totalized credits, the exception protects you. Which category your pension falls into can change your monthly check, so confirm it with the SSA before you file.
Filing a Totalization Claim
The application is Form SSA-2490-BK, “Application for Benefits Under a U.S. International Social Security Agreement.”8Social Security Administration. Application for Benefits Under a U.S. International Social Security Agreement You will need your U.S. Social Security number, your foreign social insurance number, and detailed records of employment periods in each country, including employer names and addresses abroad. The foreign identification number is the key the SSA uses to verify your work history with the other country’s agency, so accuracy matters.
You can submit the package at any local Social Security office in the United States. If you live abroad, file at a U.S. Federal Benefits Unit or mail to the Office of Earnings and International Operations, P.O. Box 17775, Baltimore, Maryland 21235-7775.9Social Security Administration. Service Around the World – Office of Earnings and International Operations Under most agreements, filing with the foreign agency also counts as filing with the SSA, and vice versa.
Employment records in a language other than English generally need English translations for the SSA’s files. Non-SSA translations must be verbatim, and the translator should sign and identify the document type, date, source, and language.10Social Security Administration. POMS DI 23045.001 – Translation of Foreign-Language Documents
Getting Paid While Living Abroad
The SSA calculates and pays all benefits in U.S. dollars regardless of where you live, so exchange rate movements do not change the benefit amount. Payments can go by direct deposit into a U.S. bank account or into an account at a financial institution in any country that participates in the international direct deposit program.11Social Security Administration. Your Payments While You Are Outside the United States
Some countries are off-limits. Treasury sanctions prohibit payments to residents of Cuba and North Korea. The SSA also generally cannot send payments to residents of Azerbaijan, Belarus, Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, or Uzbekistan, though exceptions exist for individuals who meet specific conditions. U.S. citizens affected by these restrictions can collect withheld payments once they move to an eligible country. Non-citizens in Cuba or North Korea cannot recover those payments at all.
Appealing a Denied Claim
If the SSA denies your totalization claim or you disagree with the benefit amount, there are four levels of appeal:
- Reconsideration by someone not involved in the original decision, using the SSA’s standard process.
- A hearing before an administrative law judge who was not involved in earlier reviews.
- Review by the SSA’s Appeals Council.
- A civil action in federal district court if the Appeals Council denies the request or you disagree with its decision.12Social Security Administration. Your Right to Question the Decision Made on Your Claim
You generally have 60 days from receiving the denial notice to request any level of appeal, and the SSA presumes you received the notice five days after the date on the letter. If you claim additional foreign coverage periods that were not in the original record, you need to submit evidence for them. If you do not provide the evidence or specific details within 60 days of being asked, the SSA treats the matter as closed.13Social Security Administration. POMS GN 01703.620 – How to Process Appeal Requests Gathering foreign employment records after the fact is harder than producing them with the initial application, so thorough documentation upfront pays off if a dispute arises later.