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Mietkaution (Rental Deposit) Rights in Germany and Austria 2026: Your Complete Guide to Deposit Protection and Return

Germany · Austria · EU

Understanding Your Rental Deposit (Mietkaution) Rights in 2026

If you rent an apartment in Germany or Austria, your landlord will almost certainly ask for a security deposit (Mietkaution or Kaution). This money is meant to cover unpaid rent or damage beyond normal wear and tear. But many tenants face problems getting their deposit back — or even understanding how it must be handled by law. This guide explains your rights under German and Austrian law as of 2026, including recent clarifications from courts and official sources.

The key principle is that the deposit is not the landlord's money — it remains your property, held in trust (Treuhand) to secure the landlord's claims. This distinction matters a lot when it comes to interest, return timing, and what the landlord can deduct.

Maximum Deposit Amounts: What the Law Says

In both Germany and Austria, the maximum deposit is limited by law, but the calculation differs slightly.

Germany (BGB §551)

Under the German Civil Code (Bürgerliches Gesetzbuch, §551 BGB), a landlord may demand a maximum deposit of three months' net cold rent (Kaltmiete) — that is, the rent without utility costs (Nebenkosten). This limit applies to the total, not monthly installments. If you pay in installments, you can pay in three equal monthly payments, with the first payment due at the start of the tenancy. The landlord cannot demand the full amount upfront.

Important 2026 note: The BGB does not allow the landlord to demand a higher deposit for furnished apartments or short-term leases unless the rent includes utility costs. Always check your rental agreement (Mietvertrag) — if the deposit exceeds three months' net cold rent, the clause is void.

Austria (MRG §16b)

In Austria, the maximum deposit is governed by the Tenancy Law Act (Mietrechtsgesetz, MRG §16b). The deposit can be up to three months' gross rent (Bruttomiete), which includes operating costs (Betriebskosten) and value-added tax (Umsatzsteuer). This is a key difference: Austrian law uses gross rent, making the maximum deposit potentially higher in absolute terms than in Germany for comparable apartments.

For apartments not covered by the MRG (e.g., new buildings after a certain date), the deposit is freely negotiable, but customary practice still follows the three-month rule. If you suspect an illegally high deposit, contact the Schlichtungsstelle (mediation office) in your district.

How Your Deposit Must Be Held: Safe Investment Rules

The landlord cannot simply keep your deposit in a personal account. Both countries require the deposit to be held separately from the landlord's assets.

Germany: Mietkautionskonto (Deposit Account)

Under §551(3) BGB, the landlord must place the deposit in a separate, interest-bearing account (Mietkautionskonto) at a bank, in your name or as a trust account (Treuhandkonto). The account must be designated as a deposit account so it cannot be seized by the landlord's creditors. You have the right to know the account details and to receive interest annually (or at the end of the tenancy). The interest rate is usually low (often around 0.5–1%), but it's your money.

Alternatively, the landlord may offer a Mietkautionsbürgschaft (deposit guarantee) from a bank or insurance company, where you pay a small annual fee (usually 2–4% of the deposit amount) instead of handing over the full sum. This is not a cash deposit but a guarantee — the landlord can claim from the surety if you breach the contract. This option is increasingly popular because it leaves your cash available for other uses.

Austria: Sparbuch (Savings Book) or Bank Guarantee

In Austria, the deposit must be held in a separate interest-bearing account (Sparbuch) in your name, or as a bank guarantee (Bankgarantie). The MRG §16b requires the landlord to deposit the money with a bank that is subject to Austrian banking supervision. The account must be non-transferable (nicht übertragbar) and can only be used for the deposit. You are entitled to the interest, which is credited to the Sparbuch and paid out when the deposit is returned.

A common practice in Austria is the Mietkautionsversicherung (rental deposit insurance), similar to the German guarantee. This is not a cash deposit but an insurance policy that covers the landlord up to the deposit amount. You pay a monthly or annual premium. If the landlord accepts this, you avoid tying up your savings.

When and How You Get Your Deposit Back

The return of the deposit is often the most contentious part. Here is the step-by-step process under both laws.

Step 1: Apartment Handover and Inspection

Before you move out, schedule a joint inspection (Übergabeprotokoll) with the landlord. Document the condition of the apartment with photos and a written checklist. Both parties should sign the protocol. This is your best evidence if disputes arise later.

Step 2: Landlord's Examination Period

After you vacate, the landlord has a reasonable time to inspect the apartment and calculate any deductions. In Germany, the BGB does not specify an exact deadline, but courts generally allow 3–6 months for the landlord to assess damage and utility bills (Nebenkostenabrechnung). In Austria, the MRG does not set a fixed period either, but the landlord must act without undue delay (ohne schuldhaftes Zögern). Typically, 6 months is considered acceptable if utility bills are pending.

Step 3: Landlord Must Provide Itemized Statement

The landlord cannot simply keep the deposit and say nothing. They must provide a written, itemized statement (Abrechnung) showing exactly what deductions are made and why. For example: '€200 for repainting the living room due to excessive smoking damage' or '€150 for unpaid water bill.' If the landlord fails to provide this within a reasonable time (usually 6–12 months after move-out), you may be entitled to the full deposit back, plus interest.

Step 4: Return of the Balance

After deducting legitimate claims, the landlord must return the remaining deposit plus any accrued interest. In Germany, this must be done within 6 months of the move-out date, unless utility bills are still pending (then within 6 months of receiving those bills). In Austria, the landlord must return the deposit within 6 months of the end of the tenancy, unless a longer period is agreed in the contract (which is rare).

If the landlord delays beyond this, you can demand the deposit back with interest (Verzugszinsen). In Austria, the statutory interest rate for late payment is set by the National Bank (currently around 4% above the base rate). In Germany, the default interest rate is 5 percentage points above the base rate (Basiszinssatz).

Differences Between Germany and Austria: A Quick Summary

  • Deposit calculation: Germany uses net cold rent (Kaltmiete); Austria uses gross rent (Bruttomiete) including operating costs.
  • Account type: Germany requires a Mietkautionskonto or guarantee; Austria uses a Sparbuch or bank guarantee, often with a non-transferable clause.
  • Return deadline: Germany generally 6 months after move-out (or after utility bills); Austria also 6 months but with less flexibility.
  • Interest: Both entitle you to interest, but German interest rates are typically lower due to bank practices; Austrian Sparbuch interest is often slightly higher.
  • Dispute resolution: In Germany, you can take the landlord to the local tenancy court (Amtsgericht, Abteilung Mietrecht). In Austria, you first try mediation (Schlichtungsstelle) before going to the Bezirksgericht.

Common Deductions: What Is Allowed and What Is Not

Landlords often try to deduct for normal wear and tear (normale Abnutzung). Under both laws, this is not allowed. You are only responsible for damages beyond normal use, such as:

  • Holes in walls from improperly mounted shelves (but small nail holes are usually OK).
  • Stains on carpets from red wine or ink (not from normal foot traffic).
  • Broken windows or doors.
  • Unpaid utility bills (Nebenkosten).

Painting the apartment is generally not required unless you agreed to a renovation clause (Schönheitsreparaturen) in the contract. However, many such clauses are invalid in Germany if they are too strict (e.g., requiring painting every 3 years). In Austria, renovation clauses are more strictly limited — you cannot be forced to paint if the apartment was handed over unpainted.

Frequently Asked Questions (FAQ)

1. Can the landlord keep my deposit if I move out early?
No. The deposit is only for damages or unpaid rent. Moving out early does not automatically forfeit the deposit. However, if you break the lease without legal grounds (e.g., no special termination right), the landlord may claim lost rent, which can reduce the deposit.

2. What if the landlord doesn't give me back my deposit within 6 months?
Send a written reminder (Mahnung) setting a final deadline of 14 days. If the landlord still does not pay, you can take them to court. In Germany, file a claim at the Amtsgericht; in Austria, go to the Bezirksgericht. You may also claim interest for the delay (Verzugszinsen).

3. Is a deposit guarantee (Bürgschaft) better than cash?
It depends. A guarantee leaves your cash free, but you pay an annual fee. If you have good credit, it can be cheaper than tying up thousands of euros. However, if you cause damage, the surety company will pay the landlord and then demand full reimbursement from you, often with fees.

4. Can the landlord demand a deposit for a furnished apartment?
Yes, but the maximum is still three months' rent (net in Germany, gross in Austria). The landlord cannot add extra for furniture unless the furniture is separately valued in the contract. In practice, furnished apartments often have higher rent, so the deposit amount is higher anyway.

5. What happens to the deposit if the landlord sells the building?
The deposit remains with the new owner. The old landlord must transfer the deposit account to the new owner, and the new owner is bound by the same rules. You should ask for written confirmation of the transfer. If the old landlord fails to transfer, you may claim the deposit from them directly.

6. Do I have to pay tax on the interest from my deposit?
In Germany, interest on a Mietkautionskonto is subject to capital gains tax (Abgeltungsteuer) of 25% plus solidarity surcharge, but the bank usually deducts this automatically. In Austria, the interest is subject to Kapitalertragsteuer (KESt) of 27.5%, also deducted by the bank. You generally do not need to report it separately if the bank deducts the tax.

Official Resources and Legal References

For further reading, consult these official sources (in German):

These official texts and organizations can help you verify your rights and take action if needed. Remember that laws can change, and local court decisions may affect interpretation.

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