Tax numbers are required at construction sites and shipyards

Your tax number is not automatically added to the register of tax numbers, but you can add it there yourself in MyTax. After login, select the Communication tab, then click Taxpayer details and Tax number.

How to add your tax number to the tax number register yourself in MyTax

If you do not have a tax number, you have lost your tax number, or you wish to request the registration of your tax number:

• call the service line for tax numbers 029 497 070 (standard call rates)
• visit a Tax Administration office

You must have a Finnish personal ID before you can get a tax number. First, make an appointment for visiting the tax office, and get the identity code at the tax office.

Appointments can be booked through the telephone service number Registration of foreign employees +358 29 497 010. Without an appointment, the waiting times are longer.

The processing time, on the condition that all your information and documents are made available to the Tax Administration, is normally from 1 to 3 business days.

Apply for a personal ID and a tax number at a tax office. Fill in a registration notice (6150e) in advance of your visit to the tax office.

Read more:

Tax offices that provide Finnish personal IDs

Some of the information you give will be recorded by the Tax Administration for your taxation. This information includes

• details on your employer or commissioner
• the length of your stay and work in Finland
• the amount of wages or income you receive
• the type of your employment or commission (whether you are a leased employee, self-employed or have an employment contract)

You can speed up the process by filling in one of these forms in advance:

• If you are staying in Finland for 6 months or less:
  Non-resident's application for tax at source card, tax card, tax prepayment or tax number (5057e)
• If you are staying longer:
  Application for tax card, tax prepayment or tax number – current or former foreign residents (5042e)

When you visit your tax office, you need to present the necessary documentation so that we can identify you and make sure that you can be registered. Your home country determines the documents we need.

Submit information in Ilmoitin.fi

Send a file containing your workers’ personal IDs to the Tax Administration in the Ilmoitin.fi e-service.

Ask that the workers are entered into the construction industry’s or the shipbuilding industry’s tax number register.

The tax numbers are entered in the public register automatically if you request tax numbers for at least 20 workers.

You can also send us a tax number request if you already have your workers’ tax numbers but you want them entered in the tax number register.

Submit the information as a file in Ilmoitin.fi following the data format specification: employer’s tax number requests.

Register tax numbers in MyTax

As an employer, you can also register tax numbers in MyTax with your worker’s tax number or their personal ID. You will receive a notification of registration after you have submitted the registration request. 

If the workers have been registered with their personal IDs, you will get back the registered individuals’ tax numbers.

Other methods

You can also register a tax number by calling our service number +358 29 497 070 (standard call rates) or by visiting a Tax Administration office.

The project supervisor of a construction site or the employer excercising the main authority at a shipyard can also request the tax number to be entered into the tax number register.

If your construction site will have foreign individuals who need a Finnish personal ID and a tax number, they must visit a tax office in person. If there are more than 5 of them, you must make an appointment.