Tax number

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

Important Dates and Deadlines

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. - Finland in your language

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