It is below the top two professional leagues, the Primera División (also known as La Liga) and Segunda División (also known as La Liga Hypermotion), above the Segunda Federación and Tercera Federación.

[3] The Primera Federación is made up of 40 clubs divided into two groups of 20 teams distributed by geographical proximity, initially with a north-west/south-east split.

The twenty teams in each group play each other twice, home and away, for a total of thirty-eight matches.

The winner obtains direct qualification to the Copa del Rey second round, as well as receiving the Primera Federación champion trophy.

If a team is relegated or promoted to the same division, the reserve team will be denied promotion or automatically relegated to ensure they remain one division separate.