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FinlandVero

Permanent separation ends tax spouse treatment for the year

Vero clarifies when married couples fall outside the spouse rules; separations involving cohabitants or spouses in business can also require a separate notification.

By Taxxa AI OyPublished 24 August 2026

Tax

Married couples who permanently separate to end their life together during a tax year fall outside Finland’s income-tax rules for spouses for that yearFinlex. The same exclusion applies where they have lived apart throughout the tax year for that purposeFinlex. Vero’s marriage and divorce guidance now expressly sets out this separation condition, which is already contained in the Income Tax Act.

The purpose of living apart is part of the statutory test: the spouses must be ending their cohabitation. Advisers should therefore establish why the couple lives separately, as well as whether the separation covered the whole tax year or became permanent during it. The rule concerns their treatment as spouses under the Act and can apply while they remain married.

This distinction matters even though Finland taxes individuals separately. Each person is taxed on their own salary, other earned income and capital income. Vero explains that family relationships nevertheless affect some deductions and the individual completion of tax assessment, which in turn affects tax-refund and residual-tax payment dates.

The wider definition also needs checking. Vero treats marriages and registered partnerships as qualifying from the tax year in which they are entered into. Under the Act, unmarried partners living continuously in a shared household in marriage-like circumstances during the tax year are also covered if they previously married each other or have, or have had, a common child. Spouse treatment does not apply if either or both spouses are nonresident taxpayers in FinlandVero.

Most changes in family relationships reach Vero from the Digital and Population Data Services Agency, including marriage, divorce and a child’s birth. Two situations require separate notification under Vero’s instructions: separation from a cohabiting partnerVero, and spouses in business permanently moving apart to end their cohabitationVero. Those details are reported in the customer-information section of the pre-completed tax return in MyTax or on paper form 50A. Vero asks taxpayers to check the pre-completed return received in spring and supplement it where necessary.

The spouse definition and separation exclusion are set out in Tuloverolaki, §7 (Puolisot).

Check a separated client’s spouse status against the purpose and timing of separation, and report any separately required details on the pre-completed tax return.

Sources