How US–Denmark totalization actually works
The 40-credit rule (about ten years)
A US retirement benefit on your own record requires 40 Social Security credits — what SSA calls fully insured status. You can earn a maximum of four credits in any calendar year, so 40 credits is roughly ten years of covered US work. Reach 40 and you are eligible without any agreement at all. Fall short — nine years of US work is 36 credits — and on the US record alone those years pay nothing. That cliff edge is what a totalization agreement exists to soften.
Eligibility is not the same thing as a claim date. The US full retirement age is 67 for anyone born in 1960 or later, so clearing the credit threshold establishes that a benefit exists to be claimed, not that you can draw it yet.
The 6-credit minimum
Here is the part that surprises people. The agreement will count your Danish coverage toward the 40-credit threshold, but only if you bring at least six US credits of your own — about a year and a half of covered US work. Below six credits the agreement cannot be used at all, however long you worked in Denmark. It is a hard floor rather than a rounding rule, and it is the first thing worth checking.
Combining coverage to qualify
With six or more US credits, your Danish periods are added to your US periods for one purpose only: testing whether you clear the threshold. Someone with nine US years and five Danish years does not thereby have fourteen years of US Social Security. They have nine US years that, thanks to the agreement, now qualify for a benefit. Denmark is one of roughly thirty countries the United States holds such an agreement with.
One caution on the counting. Four credits a year is the annual maximum, not a guarantee: a year with low earnings yields fewer, so nine years of US work is up to 36 credits rather than exactly 36. Your Social Security Statement carries the real total, and near a threshold that difference decides the answer.
Pro-rata: the agreement unlocks, it does not inflate
Qualifying and being paid are separate steps. Once the agreement has qualified you, SSA computes the benefit on your US earnings record alone and then pro-rates it by your US coverage as a share of the combined total. Danish years open the door; they add nothing to the American earnings the amount is calculated from. So the realistic expectation is a partial US benefit, often a modest one — paid alongside, not instead of, whatever Denmark pays.
The Danish side
Agreements are reciprocal, so US periods likewise count toward Denmark's qualifying minimum, with Denmark's own rules applying on top. Those rules differ in kind. Danish folkepension is residence-based — it accrues on the years you were legally resident in Denmark, not the years you worked there — so the periods that rescue your US benefit are not automatically the periods that build a Danish one. Denmark is also an EU member state, so its pension coordinates with other EU countries under Regulation 883/2004 while the US agreement governs the American side. Confirm the Danish specifics with Udbetaling Danmark through borger.dk.
And an agreement is never a given. Where the United States has none — Bulgaria, for instance — periods cannot be lent in either direction, and years of work simply do not travel. That is the case most worth knowing about before you move.
WEP and GPO were repealed in 2025
Older articles warn that a foreign pension shrinks your US benefit through the Windfall Elimination Provision or the Government Pension Offset. The Social Security Fairness Act repealed both in 2025, and this estimator applies no such reduction. If a page tells you otherwise, check its date before you trust it.