Something has changed
You've moved, changed bank or activity: what you need to tell the Tax Office.
Step-by-step guide
How to change your tax address with the Bizkaia Tax Office
If you've moved, this is what you have to report and when.
Step-by-step guideHow to change your bank account with the Tax Office
For direct debits and refunds.
Step-by-step guideAdding or changing an activity when you're already self-employed
When you have to report it and what changes.
ExplainedHow to authorise someone to deal with the Tax Office for you
What voluntary representation is and how it's confirmed.
Step-by-step guideHow to withdraw an authorisation when you no longer want it
Step by step, on the online portal or with us.
Step-by-step guideI can't pay the Tax Office: how to ask for a deferral in Bizkaia
Which debts can be deferred and what you need.
Would you rather we did it for you?
You answer a few easy questions from your phone and we file it for you. Fixed price.