The store has no role in the game's storyline whatsoever. The company has numerous locations across the state, most notably Los Santos and Dillimore. It is never stated what Ca$h Stores business speciality is but its name suggests that it is a payday loan store.
None of its locations are accessible, only serving as an aesthetic purpose. The business itself resembles Cash Converters, specifically its New Zealand branch whose logo is very similar to that of Ca$h Store. Cash Store is also a payday loan chain in British Columbia.