For most taxpayers, the first due date for back taxes is 1 August or 2 September 2019. You can see your due dates and payment details on your tax decision or in MyTax.

Frequently asked questions

• What if I cannot pay back taxes by due date?
• I made changes to my tax return and have not received a new tax decision yet. The original due date for my back taxes is approaching soon. Do I have to pay them?
• I sent the Tax Administration a payment that was supposed to be for back taxes. It was used on a tax prepayment instead. Why?

Everyone working at a construction site or on an installation project must have a tax number. You can get your tax number at a tax office. If you already have a tax number, ask for it to be included on the public register of tax numbers. You can start working at the construction site after your tax number is registered.

Frequantly asked questions

• How do I check if my tax number is in the tax number register?

23 August Due date of prepayments. If the Tax Administration finishes your assessment process on this day or on an earlier date in August, your tax refund will be used on this tax on 23 August, even if you make your payment on the due date.

27 August The final date when there is still enough time to log in to MyTax to submit your bank account number for the refunds in August.

2 September Due date of back taxes. If your tax assessment was completed in July, the first due date for your back taxes is 2 September.

4 September Date when refund is paid to bank account. If your tax assessment was completed in July, you will receive your tax refund on 4 September.