Spanish Literature National Prize

The Premio Nacional de las Letras Españolas or National Prize for Spanish Literature is one of several National Prizes awarded by the Spanish Ministry of Culture. First awarded in 1984, it recognises an author's literary career. The prize is 40,000 euros. It should not be confused with the Premios Nacionales de Literatura which are awarded for specific works published the previous year, in different categories.

From the Wikipedia article “Premio Nacional de las Letras Españolas”, licensed under CC BY-SA 4.0.

Check the official rules of the Spanish Literature National Prize for the current eligibility window, accepted formats, residency or language requirements and any entry fee. For most established prizes the publisher submits on the author's behalf, often with a limit on entries per imprint.

If you are self-published, look for an explicit statement that independently published books are accepted, and budget for entry fees and copies for judges.