Seattle Security Deposit Law (2026): Deadlines, Interest & Penalties
If you rented in Seattle, your landlord has 30 days after you move out to return your security deposit under SMC 7.24 / 22.220. The landlord is not required to pay interest on the deposit. Miss the deadline or wrongfully withhold funds, and the penalty can be state remedies + city enforcement. Use the calculator above to see exactly what you are owed and when it was due.
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Seattle Deposit Rules at a Glance
| Return deadline | 30 days after move-out State 30-day rule applies |
|---|---|
| Interest on deposit | Not required |
| Separate account required | Yes |
| Deposit limit | Deposit + fees capped at 1 month's rent; installment plans required on request |
| Penalty for violations | State remedies + city enforcement |
Seattle Security Deposit FAQ
How long does a landlord have to return a security deposit in Seattle?
In Seattle, a landlord must return the security deposit within 30 days after the tenancy ends, under SMC 7.24 / 22.220. Note: State 30-day rule applies.
Does my landlord owe me interest on my security deposit in Seattle?
No. Seattle law does not require landlords to pay interest on residential security deposits.
What is the penalty if a landlord misses the deposit deadline in Seattle?
State remedies + city enforcement. The governing statute is SMC 7.24 / 22.220.
Is there a limit on how much a landlord can charge as a security deposit in Seattle?
Yes. In Seattle, the security deposit is limited to Deposit + fees capped at 1 month's rent; installment plans required on request.
Does a Seattle landlord have to keep my deposit in a separate account?
Yes. Seattle law requires landlords to hold security deposits in a separate account, per SMC 7.24 / 22.220.
Are there exceptions to the 30-day deposit deadline in Seattle?
Yes — the deadline can vary: State 30-day rule applies. When in doubt, check the statute itself (SMC 7.24 / 22.220) or ask a local tenant-rights organization.
What can I do if my landlord won't return my deposit in Seattle?
First, send a written demand letter citing SMC 7.24 / 22.220 — our free generator creates one with your amounts filled in. If the landlord still doesn't pay, you can usually file in small claims court, where the penalty exposure is state remedies + city enforcement.