How to Obtain a Company’s Permanent Tax Identification Number (NIF)

The difference between a provisional and definitive NIF, and how to check the procedure specified by the Spanish Tax Agency.

The Spanish Tax Agency (AEAT) may assign an entity a provisional NIF (tax identification number) while the required documentation is being completed. You can apply for a definitive NIF using form 036, in accordance with the AEAT’s current instructions.

What to check

• Review your NIF card or notification and confirm whether it is marked as provisional or definitive.
• Check whether the company name includes the wording “EN CONSTITUCIÓN” (“being incorporated”); the AEAT explains this effect when a provisional NIF is assigned.
• Gather the incorporation documents and the information specified by the electronic office for your situation. Requirements may vary depending on the type of entity and the status of its registration.

How to apply

• Go to the Spanish Tax Agency’s electronic office.
• Open the official guidance on applying for a definitive NIF.
• Submit form 036 and the documents the AEAT requires for the entity. Use the submission channel available for your case.
• Check the status of the application and download the NIF certificate when it becomes available through the AEAT’s services.

Important

You should confirm the specific documentation and applicable submission channel through the electronic office. This guide is free and informational: it does not provide an application-filing service or replace the official instructions.