When you log in to MyTax, your tax-related letters will change from paper to electronic form automatically. Read more about the changes.
Report information related to earned income, such as:
- Wages, salaries, fees and compensation
- Pensions and benefits
- Other earned income
- Membership fees and unemployment-fund fees paid to trade unions
- Expenses for the production of income relating to your wages
- Child maintenance paid in connection with divorce, etc.
Submit the information in MyTax if possible. If you cannot use MyTax, you can use a paper form or authorise another person to act on your behalf.
Choose your filing method
If you are reporting information for last year, enter the details on your pre-completed tax return. If you are reporting information for the current year, include the information in your tax card request.
If you opt for paper filing, return address is
Finnish Tax Administration
P.O. BOX 700
00052 VERO
Download the form
Instructions
Other forms
- 1A Travel expenses – Commuting
- 1B Travel expenses – Weekend travel
- 1C Travel expenses – Commuting to a secondary place of work
- 1D Travel expenses – Deductible as expenses for the production of income, e.g. travel expenses for special sectors
- 14A Tax credit for household costs, work performed by company
- 14B Tax credit for wages paid to a household employee
- 14C Tax credit for household costs – certificate issued by the company’s country
- 19 Deduction for a second home for work
Huomio osio alkaa
The online authorisation mandate
You can use the feature called “Suomi.fi Authorization” to enable you to deal with another person’s taxes through e-services, over the telephone, or by visiting a service point on their behalf.
Huomio osio päättyy
Huomio osio alkaa
Letters of authorisation on paper
You can receive a letter of authorisation from the other person. It will enable you to deal with that person’s taxes on the telephone, by visiting a service point on their behalf, or by submitting information on paper tax forms. To have a letter of authorisation (often called a ‘power of attorney’) does not provide access to MyTax.
Letter of authorisation for tax representation of individual taxpayers
Huomio osio päättyy
Huomio osio alkaa
When is there no need for an authorisation mandate?
The following circumstances are examples of when you can deal with someone else’s taxes with no authorisation.
You have child younger than 18 and you handle the child’s taxes
You are automatically authorised to access MyTax for the child, without an authorisation. Log in to MyTax and select “Act on behalf of someone else”.
Read more about this subject on Suomi.fi.
You are a guardian
You do not need a Suomi.fi authorisation when your continuing power of attorney for being a guardian is officially confirmed, or when you are registered as a private guardian. Log in to MyTax and select “Act on behalf of someone else”.
Note: If you are a public guardian, in other words, a public official employed by a public guardianship office, you can only use paper forms.
Huomio osio päättyy
Key terms:
Page last updated 6/26/2026