Last updated on 26 April 2022

Deadline for tax returns

Tax Administration asks you to send in your tax return by 31 March.
Form 100 :

Tax authorities ask you to send in your tax return by 31 March.

But if you send it after 31 March, it should in principle be accepted.

However, if you file your tax return late (i.e. after 31 March), it is possible that the processing time for your tax return will be longer.

Non-resident taxpayers married before 1 January of the tax year who wish to change their tax class are required to file their tax return before 31 March or they will automatically be taxed in tax class 1.

Form 163 :

The deadline is 31 December and in principle Tax Administration does not accept 163 forms after this date. 



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