There’s an error in my tax assessment for earlier years

The income years 2020 and 2021

You can submit this form (RF-1117) if there’s an error in your tax assessment for the 2020 or 2021 income year or earlier.

You must explain why you believe the tax assessment is wrong. Reasons for errors in the tax assessment could be that the tax return contains incorrect or incomplete information, for example about:

• tax class
• income
• wealth
• deductions
• calculation of taxes and duties

We’ll assess your appeal and determine whether there are grounds to change your tax assessment. You’ll receive a written reply from us.

The income year 2022 or later

If you believe there’s an error in your tax assessment for 2022 or later, you can change the tax assessment yourself.

See what you have to do to change your tax return yourself or submit an appeal