Miguel de Cervantes Prize

The Miguel de Cervantes Prize (Spanish: Premio de Literatura en Lengua Castellana Miguel de Cervantes) is awarded annually to honour the lifetime achievement of an outstanding writer in the Spanish language. The Encyclopædia Britannica calls it the "most prestigious and remunerative award given for Spanish-language literature".

From the Wikipedia article “Miguel de Cervantes Prize”, licensed under CC BY-SA 4.0.

Check the official rules of the Miguel de Cervantes 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.