The Divisiones Regionales de Fútbol in the Basque Country are ultimately overseen by the Basque Football Federation which operates Group 4 of the Tercera División RFEF, the fifth tier of the Spanish football league system divided among each of the country's autonomous regions.

However, unlike most of the regions, the leagues in the sixth tier and below are organised by three separate federations, corresponding to the provinces of Álava, Biscay and Gipuzkoa.

At the end of the season, the top club is promoted automatically to the Tercera División RFEF - Group 4.

The teams finishing second play a promotion play-off depending on the number of vacancies in the Tercera División.

The team finishing second plays a promotion play-off depending on the number of vacancies seats in the Tercera División.

At the end of the season, the champions and the winner of the playoff between the runners-up are promoted to División de Honor.

The Fase de Ascenso has two groups of 10 with the two winners and runners-up being promoted to Regional Preferente.

The teams finishing second play a promotion play-off depending on the number of vacancies in the Tercera División.

At the end of the season, the two champions and runners-up are promoted to the Primera División de Bizkaia.