Tax returns from previous years
You can make changes to your tax return if you discover errors or if you receive new or delayed information.
Change your tax returns for 2023, 2022 or 2021
If you find errors or if you receive new or delayed information for these years, you can change the tax return.
You make changes by:
You can also change your tax return by sending a correction.
Tax returns for 2020 and 2019
If you find that something is incorrect or missing from your tax return for 2020 or 2019, you can make changes by submitting an appeal to the Tax Administration.
You’ll find your tax return for 2020 and 2019 in Altinn.