Forty Social Security credits, the equivalent of roughly ten years of covered work, is the threshold that unlocks a retirement benefit, and citizenship has no bearing on reaching it. A noncitizen who worked legally, paid Social Security payroll taxes, and accumulated enough credits qualifies for the same retirement benefit as anyone else, calculated from the same average-earnings formula. The bigger complication for many immigrant workers arrives later, when moving outside the United States can interrupt payments unless a specific exception applies.
How the 40-Credit Threshold Works
Social Security credits accumulate through covered earnings, not through years of residency or a particular visa category. In 2026, a worker earns one credit for every $1,890 in covered wages or self-employment income, up to a maximum of four credits a year once earnings reach $7,560. At that pace, a worker needs roughly ten years of steady covered employment to reach the 40 credits required for retirement eligibility, though the credits themselves never expire and do not have to be earned in consecutive years.
The number of credits only determines eligibility, not the size of the eventual check. Once someone clears the 40-credit line, the benefit amount is set by average indexed monthly earnings across a worker’s highest-earning years, so credits earned beyond the minimum required do not raise the payment on their own. That structure means a lawful permanent resident, a longtime work-visa holder, or a naturalized citizen who each worked the same 40 quarters at the same pay would qualify for identical benefit amounts, with immigration status affecting neither the credit count nor the payout formula.
Earning those credits generally requires a Social Security number that was valid for work at the time the earnings were reported. Under a 2004 change to federal law, earnings posted under an SSN issued on or after January 1, 2004 count toward the 40-credit threshold only if the work was authorized when it was performed, while earnings recorded under an SSN assigned before that date count toward insured status regardless of the worker’s authorization status at the time. That distinction can determine which years of a long or complicated work history ultimately count, though it does not change the 40-credit target itself.
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What Can Complicate Payment Once Someone Leaves the Country
Social Security’s own rules say benefits generally cannot be paid to a noncitizen after a sixth consecutive calendar month outside the United States, unless an exception applies, such as living in a country with a qualifying bilateral agreement or meeting one of several statutory carve-outs tied to military service, refugee or asylee status, or other specific circumstances. Counting only begins once someone has been out of the country for 30 consecutive days, and returning for any part of a day before that 30-day mark resets the clock entirely.
A noncitizen who is leaving, or has already left, the United States for 30 days or more must file Form SSA-21 to report the absence. If payments do stop after the sixth month abroad, restarting them requires physically returning and remaining lawfully present in the United States for one full calendar month, meaning arrival no later than the last day of the prior month and departure no earlier than the first day of the following one. Proving that presence generally means submitting government documents, purchase receipts, or signed statements establishing the exact dates involved.
The same 40 credits that unlock a retirement benefit also determine eligibility for premium-free Medicare Part A at 65, since Social Security uses one unified credit count across retirement, disability, Medicare, and a family’s survivor eligibility. A noncitizen who reaches 40 credits through covered work qualifies for premium-free Part A on the same terms as a citizen with an identical earnings history, with no separate credit threshold applied on the basis of immigration status.
The 40-credit threshold resurfaces here in a different form. Apart from residing in a country with a qualifying agreement, a Congressional Research Service summary of Social Security’s noncitizen payment rules notes that one recognized exception to the payments-abroad restriction covers a person collecting on the record of a worker who lived in the United States for at least 10 years or earned at least 40 quarters of coverage, which can allow continued payment overseas even without a bilateral agreement in place, unless the recipient is a citizen of a country whose own government does not pay comparable benefits to Americans living there.
How Totalization Agreements Help Close Gaps
Someone who split a career between the United States and another country does not always need a full 40 U.S. credits to qualify. The United States has bilateral Social Security agreements, known as totalization agreements, with 30 countries, and under those agreements Social Security can count a worker’s foreign coverage toward the U.S. credit threshold when domestic work alone falls short. The reverse also applies: a foreign system can count U.S. credits toward its own eligibility rules for a worker who never accumulated enough coverage abroad.
Totalization does not transfer credits from one country’s system to the other. Foreign credits used to help meet the U.S. threshold remain on that country’s own record, which means a worker who qualifies this way can end up receiving two separate, partial benefit payments rather than one combined check, with the U.S. portion sized only to the share of a career actually worked under American Social Security coverage.
This article was produced with the assistance of AI and reviewed by The Money Overview editorial team before publication.
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