US tax for Americans in Sweden
There is a US–Sweden income tax treaty and a totalization agreement, both in force. Combined municipal and national rates exceed 50% at the top, so the foreign tax credit almost always beats the exclusion on employment income. The complication is the investeringssparkonto: Sweden's flat-rate savings account is taxed on a deemed return, which produces little creditable tax and often holds PFICs.
The salary side is the easy part
Combined municipal and national tax exceeds 50% at the top, so Swedish tax on a professional salary comfortably exceeds the US tax on the same income. Form 1116 removes the US liability and leaves a large carryforward — up to ten years against future foreign-source income.
Revoking the exclusion to get there binds you for five tax years without IRS consent, so it is a decision taken deliberately rather than a box ticked.
The ISK is where a treaty stops helping
An investeringssparkonto is taxed annually on a deemed return rather than on income actually received. That makes the Swedish charge difficult to characterise as a creditable income tax, while the United States taxes the actual dividends and gains inside the account.
The result is a genuine mismatch: real US tax on income the treaty cannot shelter, against Swedish tax that may not credit against it. A treaty being in force does not fix it, because the two countries are taxing different things.
And the funds inside it are usually PFICs
Swedish and other UCITS funds held in an ISK are foreign mutual funds for US purposes, so Form 8621 normally follows — with a default calculation that taxes a disposal at the highest ordinary rate across the holding period, plus interest. The account that makes Swedish investing simple is doing the opposite on the American side.
Your kommun changes your rate
Municipal tax varies by kommun, so two Americans on the same salary in different municipalities pay different Swedish tax and carry different credits. The variation is smaller than Switzerland's cantonal spread, but it is real and it is worth knowing when a move is being considered.
One thing Sweden does not have
Sweden abolished its wealth tax in 2007, so unlike Norway and Switzerland there is no non-creditable wealth charge to work around here. What creditable tax there is, is income tax — which is the kind Form 1116 recognises.
A worked example, tax year 2025
A single American employed in Stockholm on $190,000, with Swedish income tax of $95,000 for the year.
Scroll the table sideways
IRC §901, §904, §911 and §1291–1298; US–Sweden income tax treaty; US–Sweden totalization agreement; IRS Publication 54; IRS Publication 514; IRS Form 8621 instructions; Swedish municipal and national income tax and the investeringssparkonto regime; Rev. Proc. 2025-32; 31 CFR 1010.350. US figures are tax year 2025. Checked 22 September 2026.
Questions Americans in Sweden ask
Is my ISK a problem on my US return?
Usually. Sweden taxes it on a deemed return, which is difficult to credit, while the US taxes the actual income and gains. Funds held inside are commonly PFICs, adding Form 8621.
Does the credit or the exclusion win in Sweden?
The credit, almost always, because combined rates exceed 50%. Revoking the exclusion binds you for five years, so the decision is made deliberately rather than by default.
Can my salary carryforward cover the tax on my ISK?
No. Credits are computed by category, and a general-category carryforward from employment income cannot be applied against passive income such as dividends inside an ISK. The two sit in separate baskets.
Does my municipality affect my US return?
Indirectly, yes. Municipal tax varies by kommun, so the Swedish tax paid — and therefore the credit available — differs between municipalities on the same salary.
I have not filed for several years while in Sweden. What now?
If the failure was non-willful — which describes most people in this position — the Streamlined Foreign Offshore Procedures waive the failure-to-file, failure-to-pay and FBAR penalties: three years of returns, six years of FBARs, and Form 14653.
Filing from Sweden?
Twenty minutes settles the salary side quickly, and gives the ISK the attention it actually needs.