Danish pensions and US tax: ratepension, livrente, aldersopsparing and ATP

Denmark runs one of the most complete pension systems in the world, and an American working there usually ends up in several parts of it at once: folkepension and ATP from the state, an employer scheme through the arbejdsmarkedspension, and often a private ratepension, livrente or aldersopsparing on top. For U.S. tax, none of that is one thing.

The order the analysis actually runs in

1. Classify the arrangement. Is it an employer plan, a personal contract with a pension company, a bank-held account, or a state benefit? U.S. treatment follows the substance of the arrangement, not the Danish product name.
2. Ask whether contributions are currently taxable. Danish law may exclude employer contributions from your Danish income; that answer is Danish and does not automatically transfer.
3. Ask whether growth inside is currently taxable. Denmark taxes pension returns through PAL-skat; the U.S. question is whether the arrangement produces current U.S. income to you.
4. Ask what the treaty does. Article 18 allocates taxing rights over pensions and similar payments; the saving clause limits what a U.S. citizen can claim.
5. Ask what must be reported. Reporting is a separate obligation from tax and survives even when no tax is due.

The Danish products, and the question each raises

What Article 18 does and does not do

Article 18 of the 1999 convention covers pensions, social security, annuities and alimony, and allocates taxing rights between the two states. The saving clause in Article 1 preserves the United States' right to tax its own citizens as if the treaty had not entered into force, subject to the specific exceptions listed in that article. For a U.S. citizen resident in Denmark, that combination is why a treaty article rarely produces the clean exemption people expect, and why the relief usually arrives as a credit under Article 23 rather than an exclusion.

The 2025 competent authority arrangement

On 25 March 2025 the U.S. and Danish competent authorities published an arrangement clarifying which pension entities and arrangements qualify as a “pension fund” for the Article 10(3)(c) dividend exemption. It matters — but it is an institutional-investor question about pension funds claiming treaty benefits on dividends. It does not change how an individual U.S. citizen in Denmark reports a personal Danish pension on a Form 1040.

PAL-skat and the Foreign Tax Credit

Denmark levies PAL-skat at 15.3% on the annual return inside pension arrangements. Whether that is a creditable foreign income tax for the individual, in which Form 1116 category, and in which year, is genuinely fact-dependent — it is computed on a different base from an income tax and is often paid by the institution. Treat it as an item for professional review, not an automatic credit.

Reporting, which is the separate question

• A Danish pension account where you hold an account-like interest may be reportable on the FBAR
• A foreign pension can be a specified foreign financial asset for Form 8938 when thresholds are met
• Some foreign arrangements raise Form 3520 / 3520-A questions; whether a Danish arrangement does is a classification question, not a given
• Non-U.S. funds inside the arrangement can raise Form 8621

Reporting obligations run independently of whether any tax is due. A pension that produces no current U.S. tax can still produce several reporting forms.