The tax number register is temporarily unavailable between 14 November 3.30 pm and 18 November 8 am 2025

Due to a service break in MyTax, you cannot be entered into the public tax number register on Saturday 15 and Monday 17 November 2025. 

If you have a Finnish personal ID

If you are a new employee at a construction site, enter yourself into the tax number register in MyTax or ask to be entered into the register before 15 February. To register by telephone, call 029 497 070.

If you are an employee from another country without a Finnish personal ID

Visit a tax office on 14 November at the latest to get a Finnish personal ID and a tax number. Also request to be entered into the public tax number register.

If your work begins during 14–17 November and you cannot visit a tax office in advance, you can begin working without a tax number. However, you must be able to prove that your employment contract started during this period. If you start working without a tax number, visit the tax office immediately on 18 November to get registered and ask to be entered into the tax number register.

The electronic tax number register cannot be updated between 15 November and 17 November 2025

If you work on a construction site or in the shipbuilding industry in Finland, you must have a personal tax number and you must be listed in the public tax number register.