There are scam messages in circulation that claim to be sent by the Tax Administration. Read more about scam messages

Businesses and corporations

Value added tax

If your company is in the VAT register, remember to file VAT returns regularly even if you have not had any business activities. 

Tax return

Tax return deadlines for companies and corporations:

  • Self-employed persons with a business name, business partnerships and agricultural operators: 3 April
  • Limited liability companies and other corporations (accounting period ended in 12/2022): 2 May

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.

Important Dates and Deadlines

23.3.2023 Due date for prepayments of income tax
31.3.2023 The income tax return of corporate taxpayers
12.4.2023 Due date for VAT and other self-assessed taxes
12.4.2023 Employer's contributions

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.

Entrepreneurs: send information for household tax credits on your customer’s behalf

Self-employed professionals and companies providing renovations and other services to households can use an API to send information on the expense amounts to the Tax Administration directly.