North Rhine-Westphalia Security Deposit Laws: Guide for Landlords
Security deposit rules in NRW, Germany: maximum amount, investment requirements, return deadlines, and permitted deductions for landlords.
Legal Disclaimer
This content is for general informational and educational purposes only. It does not constitute legal advice and should not be relied upon as such. Laws change frequently — always verify current regulations and consult a licensed attorney in your jurisdiction for advice specific to your situation. Landager is a property management platform, not a law firm.
The security deposit (Mietkaution) is a fundamental element of German rental law. In North Rhine-Westphalia, the federal provisions of the German Civil Code (BGB) apply, supplemented by case law from the Federal Court of Justice (BGH). Landlords who fail to comply with these rules risk having the deposit agreement declared void or facing compensation claims.
Disclaimer: This guide provides general legal information for educational purposes only and does not constitute legal advice. Always consult a licensed attorney in North Rhine-Westphalia for guidance specific to your situation. Information last verified: March 2026.
Maximum Deposit Amount
Under § 551(1) BGB, the security deposit may not exceed three months' net cold rent (base rent excluding operating costs). Tenants are entitled to pay in three equal monthly installments, with the first installment due at the start of the tenancy.
| Feature | Rule |
|---|---|
| Maximum amount | 3 months' net cold rent (§ 551(1) BGB) |
| Payment method | Lump sum or 3 installments |
| First installment due | At the start of the tenancy |
| Right to installments | Legally guaranteed (§ 551(2) BGB) |
Agreements requiring a higher amount are void to that extent — though the tenant must actively reclaim any overpayment.
Investment Requirements
Under § 551(3) BGB, the landlord is obligated to:
- Keep the deposit separate from personal assets
- Invest it at a credit institution — typically in a separate savings account with a three-month notice period
- Earn market-rate interest on the deposit
The interest earned belongs to the tenant and is paid out together with the principal upon return of the deposit. Investing in higher-risk instruments (stocks, funds) without the tenant's explicit consent is not permitted.
Alternative deposit forms (if agreed in the lease):
- Bank guarantee (Bankbürgschaft)
- Pledged savings book
- Deposit insurance (Kautionsversicherung)
Return of the Deposit
After the tenancy ends, the landlord has a reasonable period to inspect and settle accounts. Courts generally accept a timeframe of three to six months, depending on the complexity of outstanding items.
Permitted Deductions
| Permitted Deduction | Explanation |
|---|---|
| Damage | Damage beyond normal wear and tear |
| Outstanding rent | Unpaid rent arrears |
| Operating costs | Expected shortfalls from the annual statement |
| Cosmetic repairs | Only if validly agreed in the lease |
A deduction for end-of-tenancy cleaning is generally only permitted if the tenant was validly obligated to clean upon departure and the apartment was left in an unclean condition.
Impermissible Deductions
- Normal signs of use and age-related wear
- Damage that existed at move-in
- Repairs qualifying as the landlord's maintenance obligation
Statute of Limitations
| Claim | Period | Legal Basis |
|---|---|---|
| Landlord's damage claims | 6 months after return of keys | § 548(1) BGB |
| Tenant's deposit refund claim | 3 years (from awareness) | § 195 BGB |
| Operating cost statement | 12 months after billing period | § 556(3) BGB |
Best Practices for Landlords
- Create a handover protocol — detailed written record with photos at both move-in and move-out
- Maintain a separate deposit account — always keep a dedicated account
- Retain interest certificates — keep bank interest statements for the final settlement
- Respect deadlines — issue operating cost statements within 12 months after the billing period
- Do not offset without prior written notice
Landager helps you centrally manage deposit payments, returns, and deadlines with automatic reminders for important due dates.
Back to North Rhine-Westphalia Landlord-Tenant Laws Overview.
Sources & Official References
Sind Sie bereit, Ihr Vermietungsgeschäft zu vereinfachen?
Schließen Sie sich Tausenden unabhängiger Vermieter an, die ihr Geschäft mit Landager optimiert haben.