You can notify the Tax Agency of facts or situations that may constitute tax infringements or smuggling, or that may be relevant to the application of taxes.

You can file a tax report in general, at any Tax Agency office, either in person or by mail.

In the electronic headquarters of the Tax Agency you have a Public Tax Complaint Model .

Also through the Internet, you can select the appropriate form provided for each case:

• invoices and tickets undeclared
• Use of sofware sales concealment
• E-commerce and other tax frauds online
• Lease of properties

The following link refers to the procedure to follow in any of the cases: Tax complaint .