Businesses and corporations

Tax prepayment

The amount of the current year's total prepayments is based on an estimate of taxable profits. If your income or expenses do not match the estimate you had made, you can request an adjustment of your prepayment in MyTax.

Additional prepayment

If at year end, the total paid-in amount is not enough, we recommend you ask for an additional prepayment to be calculated for you.

Katso identification system is now withdrawn

You can no longer use your Katso ID and Katso authorisations.

If you are currently using Katso authorisations to take care of someone else’s tax matters, you must request new authorisations instead. Your Katso authorisations will not be automatically replaced with authorisations. 

Important Dates and Deadlines

12.1.2022 Due date for VAT and other self-assessed taxes
24.1.2022 Due date for prepayments of income tax
31.1.2022 The income tax return of corporate taxpayers


Payment arrangement

If you have temporary financial difficulties and you need more time for paying your taxes, you can ask for a payment arrangement.

Request a payment arrangement in MyTax. You will get your decision faster in MyTax than by calling.

Business in Finland

Are you bringing your business operations to Finland? Your tax liabilities in Finland will depend on your company type and the scope of your operations.