How to unregister from the Finnish Tax Administration's register on MyTax

Go to the MyTax Taxpayer details tab and select Change register information. Alternatively, click on the Activities tab on MyTax home page, select Registrations and authorisations — Making changes to information in VAT register, prepayment register and register of employers

Change information for only those registers that you wish to modify or exit.

If you wish to exit a register, give the last active date in that register. E.g. if you wish to end your VAT-registration after January, declare 31.01. as the last active registerdate.