Who sets up the rental deposit: the landlord or the tenant?
Every new tenancy also raises the question of security. The rental deposit (up to three months' net cold rent) protects landlords financially against damage or outstanding claims. But who is actually responsible for setting it up?
By law, the landlord is obliged to set up the rental deposit (§ 551 BGB).
However, there are permitted alternatives, such as the tenant setting it up by way of a pledge.
Setting up the rental deposit – at a glance
- In principle, the landlord is legally obliged to set up the rental deposit (§ 551 BGB).
- The deposit must be held separately from private assets and protected against insolvency, usually with a credit institution.
- The interest earned belongs to the tenant and increases the deposit amount.
- Alternatively, the tenant can set up the deposit themselves, e.g. via a pledged account or securities account – provided there is a clear agreement.
- What matters is not who opens the account, but that the deposit is set up in a legally secure and verifiable way.
- Mistakes when setting up the deposit can lead to tenants withholding payments or asserting legal claims.
The legal situation: landlords are obliged
If you receive the deposit as a bank transfer or cash deposit, you must:
- hold it separately from your private assets
- keep it protected against insolvency
- deposit it with a credit institution
- pay interest at the usual rate for savings deposits with three months' notice
The interest earned belongs to the tenant and increases the deposit amount.
Why the separation is so important
Holding the deposit separately protects it against insolvency. If the deposit is not cleanly separated from your own assets, there is a considerable liability risk. In the event of insolvency, the money must not fall into the bankruptcy estate.
Difficulties with the special account
In theory the rule is clear, but in practice a special account can cause a number of problems:
- Many banks no longer offer free trust accounts.
- Setting one up and managing it creates effort.
- Tax certificates have to be processed.
- Savings-account interest is low and inflation erodes the real value of the security.
Especially with several units, the administrative effort adds up considerably.


A modern solution for landlords: digital rental deposit accounts
Digital solutions such as the free online rental deposit account from heykaution allow the deposit to be managed in a legally secure, insolvency-proof, digital and free way – without a classic special bank account. This fulfils the legal obligation without any additional administrative effort.
Alternative: setup by the tenant (pledge)
The law allows solutions by mutual agreement. Landlord and tenant can agree that the tenant takes over setting up the deposit themselves.
How the pledge works
- 1The tenant opens an account or securities account in their own name.
- 2They sign a pledge declaration in favour of the landlord.
- 3The bank adds a blocking note, so that withdrawals are only possible with consent.
Benefits for landlords
- No trust account of your own required
- No administrative effort
- Automatic insolvency protection
- Legally secure access in the case of justified claims
Important: The pledge must be correctly notified to the bank.
Which forms of investment are permitted?
The usual and permitted forms of investment for the rental deposit are the following:
- Rental deposit account / savings book
- Overnight money account
- Rental deposit securities account (ETFs / shares)
- Rental deposit guarantee
As a general rule: your consent is required for alternatives to the classic trust account.
In our blog article, landlords can learn more about the ways to set up a rental deposit in a legally secure manner.
Conclusion: setting up the rental deposit as a landlord
By law, the obligation to set up the deposit lies with the landlord. Especially with several properties or to avoid bank fees, digital solutions such as heykaution are becoming increasingly important.
Checklist for landlords
- Hold the deposit separately from private assets
- Ensure protection against insolvency
- Take the interest under § 551 BGB into account
- Document the form of investment in writing
- Have the pledge correctly notified
- Be able to provide proof at any time
- Observe repayment deadlines


Frequently asked questions (FAQ)
Published on 20 July 2026