NASH21 AG provides a digital service for rental deposit guarantees (Mietkautionsbürgschaft), which serves as an alternative to the traditional cash security deposit. Tenants pay an annual fee to Nash21, and in return, the company provides a guarantee to the landlord covering potential claims up to the agreed deposit amount. This frees up the tenant's cash for other purposes while providing the landlord with security from a regulated partner. The company's mission is to digitize and simplify the rental deposit process, making it more efficient and flexible for both parties. The guarantee is backed by R+V Allgemeine Versicherung AG, a major German insurance company.

Founded in

Spain