Amendment to a previously filed 2025 Income Tax return
Learn how to modify an already filed income tax return.
Introduction
Using the option to modify the declaration, you can either file a corrective self-assessment or change the taxation option you choose.
Once the return has been filed, this situation will be detected when you access Renta Web again, so to modify it you will have to click on "Modify filed return":

The declaration summary will display the result of the declaration initially submitted.
To rectify, complete or modify the self-assessments submitted for IRPF 2025, once the necessary modifications have been made in the section of Renta Web "Modify Income 2025 declaration already submitted" the corrective self-assessment option will be selected.
To change the tax option in the "Modify Income Tax Return 2025 already submitted" section of the Income Tax Web, select "change option".