Available data: open data catalog of the Tax Agency
The Tax Agency has a large volume of undeclared information that is reserved and that may be of great interest to any natural or legal person, due to its impact and value. This information, which is mainly statistical and concerns tax and customs affairs, is now being published on the Tax Agency portal on Internet.
You can access the information from this catalog directly, or through Public information catalog New window of the General State Administration, included on the page "https://datos.gob.es".
Below is the data catalog of the Tax Agency , which groups data sets generated by it and reusable in accordance with the general conditions of reuse: