A Rental Guarantor Letter is commonly used in the German rental market when a tenant requires additional security to satisfy a landlord's requirements. This might occur when a tenant has limited credit history, is a student, or is new to the country. The document, governed by German law, particularly the provisions of the German Civil Code (BGB) regarding suretyship (Bürgschaft), establishes a legally binding commitment from a guarantor to cover the tenant's obligations under the rental agreement. The guarantor can be an individual (often a family member) or an institution (such as a bank or corporation). The letter must specify the exact scope of the guarantee, including financial limits and duration, and must meet strict form requirements under German law. It serves as an alternative to large security deposits and provides landlords with additional security while making rental properties accessible to a broader range of tenants.

1. Letter Header: Date, addressee (landlord/property manager), property address, and reference numbers

2. Guarantor Information: Full legal name, address, and contact details of the guarantor

3. Tenant Information: Full legal name of the tenant(s) being guaranteed

4. Rental Agreement Reference: Details of the underlying rental agreement including date, parties, and property address

5. Guarantee Declaration: Clear statement of guarantee obligation, including scope and extent of the guarantee

6. Financial Limits: Specific amount or extent of the guarantee obligation

7. Duration: Term of the guarantee, including start date and any end date or termination conditions

8. Signature Block: Space for guarantor's signature, date, and any witness requirements