Definition
The Sociedad Anónima Deportiva (SAD) is a for-profit corporate form regulated by Spain's Sports Act and dedicated legislation. It is mandatory for clubs competing in the top professional leagues (LaLiga, ACB basketball, etc.). Unlike a sports club or association, a SAD pays corporate tax under the general regime, has shareholders instead of members and follows corporate law with sport-specific provisions.
The four historic exceptions in Spanish football (Real Madrid, FC Barcelona, Athletic Club, Osasuna) kept the club form thanks to a 'no forced conversion' rule for entities not in financial losses at the time of the reform.
When does it apply?
Does NOT apply to amateur or grassroots sport — only the professional top tier. For a club running amateur teams, schools or local leagues, the right form is Sports Club (Elementary or Basic) or Sports Association. Confusing SAD with an amateur club is a very common conceptual mistake.
Practical example
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