From 14 April on, when you log in to MyTax you will activate Suomi.fi Messages. Tax correspondence will be delivered electronically only, in MyTax. Read more about the changes.
Can I request for rectification of a decision on a claim for adjustment?
A decision on a claim for adjustment can be requested to be rectified by lodging an appeal to the administrative court. The deadline and instructions for appealing are in the appeal instructions appended to the decision.