Is my Swedish bostadsrätt (co-op apartment) a US tax problem?
Short answer: A bostadsrätt gives you a right to use an apartment owned by a housing cooperative (bostadsrättsförening), rather than direct real estate title, which is an unfamiliar structure for US tax purposes but is still generally treated as your home for US reporting. The bigger practical issues are a krona-denominated mortgage creating a potential US currency gain on repayment or refinancing, and capital gains treatment on sale that differs between the two countries.
Written and reviewed by Anthony Walsh, Selanis. Last reviewed 2026-10-09.
Why it works this way
Because a bostadsrätt is a share in a cooperative rather than a direct deed, US preparers unfamiliar with the structure sometimes misclassify it; in practice it is generally treated similarly to owning a home for US purposes, but the distinction matters for cost basis and reporting.
A foreign-currency mortgage is measured in dollars when taken out and again when repaid or refinanced under US tax principles; if the dollar has strengthened against the krona since origination, repaying or refinancing can produce a taxable US exchange gain even though nothing was economically earned.
Sweden taxes a capital gain on sale of a primary residence at a reduced effective rate with a deferral option (uppskov) for reinvestment in a new home, while the US taxes the gain under its own primary-residence exclusion rules; the two systems rarely produce matching numbers, and the Swedish deferral has no direct US equivalent.
The expensive mistake: Refinancing a krona mortgage without checking the dollar
Refinancing to a better Swedish rate is routine housekeeping in Sweden and a potential taxable event in the US if the currency has moved since the loan was taken out. Check the exchange rate history before signing, not after.
What to do
- Record the exchange rate at origination — This is the baseline for any future US currency-gain calculation.
- Model any refinance or repayment before signing — Compare the Swedish rate saving against the potential US dollar gain.
- Plan the sale separately in both systems — Don't assume the Swedish uppskov deferral has a US mirror.