Swiss Rental Deposit 2026 (Mietkaution): Rules, Limits & How to Get It Back
Switzerland caps rental deposits at three months' net rent — but the rules around blocked accounts, deductions, and getting your money back are more nuanced than most tenants realise. Here's everything you need to know.
Updated May 2026 · 10 min read
In this article
1. How much is the Swiss rental deposit?
Swiss law (Art. 257e of the Code of Obligations / OR) sets a hard cap: the deposit cannot exceed three months' net rent. Net rent means the base rent before ancillary costs (Nebenkosten) — the figure your deposit cap is calculated from.
Example calculation
| Monthly net rent | Maximum legal deposit |
|---|---|
| CHF 1,200 | CHF 3,600 |
| CHF 1,800 | CHF 5,400 |
| CHF 2,500 | CHF 7,500 |
| CHF 3,500 | CHF 10,500 |
Some landlords ask for a deposit equal to exactly three months — which is the maximum, not the standard. Deposits of one or two months' rent are also common, particularly for smaller apartments or when landlords know the tenant well. There is no legal minimum.
2. The Sperrkonto — how the blocked account works
In Switzerland, the rental deposit cannot simply be handed to the landlord. It must be held in a Sperrkonto(blocked account) — a special bank account opened in the tenant's name. This is a critical legal protection.
Key rules of the Sperrkonto
- The account is in the tenant's name, not the landlord's
- The landlord cannot access the funds during the tenancy without your written consent or a court order
- Interest earned on the account accrues to the tenant
- The tenant pays the deposit directly into this account — not to the landlord personally
- The account is typically set up at PostFinance, UBS, Raiffeisen, or another Swiss bank
- To release funds at departure, both parties must sign a release form (Freigabeformular)
Step-by-step: paying your deposit
- Landlord provides you with the bank details for the Sperrkonto (or asks you to open one together)
- You transfer the deposit amount directly to the blocked account before or at move-in
- The bank confirms receipt and the account is formally blocked
- Keep your transfer confirmation — you may need it later
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Translate my lease →3. Deposit guarantee alternatives to the Sperrkonto
Locking up three months' rent in a blocked account is a significant cash outlay — especially when you are also paying moving costs and overlap rent. Switzerland has a well-developed market for deposit guarantee services (Mietkautionsversicherung / assurance de cautionnement) that let you avoid tying up cash.
| Provider | How it works | Approximate annual cost |
|---|---|---|
| Firstcaution | Guarantor pays landlord on valid claims; you repay the guarantor | ~3.5–5% of deposit/year |
| Swiss Caution | Same model — guarantee certificate issued to landlord | ~3.5–5% of deposit/year |
| flatfox Kaution | Digital-first, integrated with rental platforms | ~4% of deposit/year |
| Sperrkonto (classic) | Cash blocked in your name, returned at departure | Free (interest is minimal at current rates) |
The choice depends on your cash position. If you have the funds available, a Sperrkonto is financially better — you eventually get all the money back. If you are cash-constrained at move-in, a guarantee service costs roughly CHF 150–400/year for a typical Zurich apartment deposit, which may be worth the liquidity.
4. What can the landlord deduct from your deposit?
This is where most deposit disputes arise. Swiss law distinguishes clearly between what is and is not a valid deduction.
| Valid deductions ✅ | Not valid ❌ |
|---|---|
| Damage beyond normal wear and tear (holes in walls, broken tiles, stained carpets) | Normal wear and tear (minor scuffs, small nail holes, faded paint) |
| Unpaid rent | Age-related deterioration (carpet that is 9 years old, yellowed blinds) |
| Outstanding Nebenkostenabrechnung balance | Repainting if paint condition was already average on move-in |
| Professional cleaning if apartment was not returned clean | Improvements the landlord wanted to make anyway |
| Missing keys (replacing locks) | Costs not documented or claimed within the legal timeframe |
The useful life (Lebensdauer) principle
Every item in a Swiss apartment has a legally defined useful life. If an item is damaged but already old, the landlord can only charge you a proportional amount — not full replacement cost. The formula is:
| Item | Typical useful life | Example: 8 years old, full replacement = CHF 2,000 |
|---|---|---|
| Carpet / flooring | 10 years | Tenant owes: CHF 400 (20% remaining life) |
| Wall paint | 8–10 years | After 8 years: landlord bears full cost |
| Kitchen appliances | 15–20 years | Tenant owes proportional share only |
| Bathroom fittings | 20–25 years | Very low tenant liability if old |
5. How to get your deposit back
Before you move out: your deposit protection checklist
- Request the move-in protocol (Wohnungsübergabeprotokoll) — compare the condition of every room against the initial handover document. You are only responsible for damage that occurred during your tenancy.
- Deep clean the entire apartment — kitchen (oven, fridge, extractor), bathrooms, windows inside and out, all surfaces
- Fill nail holes and touch up minor marks — minor cosmetic fixes reduce the landlord's cleaning/repair claims
- Take timestamped photos of every room on the day you hand back the keys
- Attend the exit inspection (Wohnungsabnahme) in person — do not hand over keys without being present
- Do not sign an exit protocol you disagree with — you can sign under protest or request time to review it
After the exit inspection
- The landlord has a reasonable time to raise damage claims — typically until the annual Nebenkostenabrechnung is settled (up to 3 months)
- Once all claims are resolved, both parties sign the Sperrkonto release form
- The bank releases the funds to you within a few business days
- If the landlord makes deductions, they must provide itemised written documentation with invoices
Confused by your Swiss lease or deposit terms?
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Analyse my contract →6. Deposit disputes — your rights and how to enforce them
If your landlord refuses to release the deposit, makes deductions you consider unfair, or simply does not respond, you have clear legal options — and they are free.
Step 1: Formal written demand
Send a registered letter (Einschreiben) demanding release of the deposit within 10 days, citing Art. 257e OR. Keep your postal receipt. This letter creates a legal paper trail and often resolves the dispute without further action.
Step 2: Cantonal conciliation authority (Schlichtungsbehörde)
If the landlord does not respond or refuses, file a request with the cantonal conciliation authority for tenancy disputes (Schlichtungsbehörde für Mietsachen). This service is completely free. A mediator will hear both parties, typically within 4–8 weeks. Most deposit disputes are resolved at this stage.
Step 3: Tenancy court
If conciliation fails, the matter goes to the cantonal tenancy court (Mietgericht). For claims under CHF 2,000, the process is simplified and low-cost. Tenant associations (Mieterinnen- und Mieterverband / ASLOCA) can provide legal support and representation.
FAQ
How much is the rental deposit in Switzerland?
Swiss law caps it at three months' net rent, held in a blocked bank account (Sperrkonto) in the tenant's name.
Can a Swiss landlord keep my deposit?
Only for damage beyond normal wear and tear, unpaid rent, or outstanding ancillary costs — with itemised documentation. Normal wear and tear and age-related deterioration are not valid grounds.
How long does a landlord have to return the deposit?
No fixed legal deadline, but 1–3 months after departure is typical. If no action after 3 months, send a formal registered letter and contact the Schlichtungsbehörde if needed.
What is a Sperrkonto?
A blocked bank account in the tenant's name holding the deposit. The landlord cannot access it without written tenant consent or a court order. Interest accrues to the tenant.
Can I use a deposit guarantee instead of blocking cash?
Yes. Providers like Firstcaution, Swiss Caution, and flatfox Kaution offer guarantees for an annual premium (~3.5–5% of deposit). Useful if you are cash-constrained at move-in.