Deposit rules / Washington

Washington security deposit rules

Washington sets no statutory limit on the size of a security deposit. The deposit must be returned full and specific statement of deductions (with estimates or invoices) and any refund within 30 days after termination of the rental agreement and vacation of the premises, with an itemised list of any deductions. No interest is owed on the deposit under state law.

Maximum deposit
No limit
No statutory limit
Return deadline
30 days
Full and specific statement of deductions (with estimates or invoices) and any refund within 30 days after termination of the rental agreement and vacation of the premises
Interest
Not required
Statute

What the law requires

RCW 59.18.280

No statutory limit. Returned Full and specific statement of deductions (with estimates or invoices) and any refund within 30 days after termination of the rental agreement and vacation of the premises. Deposits must be held in a trust account with a written checklist of the unit's condition (RCW 59.18.260, 59.18.270); no deposit may be collected without a written rental agreement. Tenants may pay deposits and last month's rent in installments on request (RCW 59.18.283). 2025 HB 1217 (c. 209) did not cap deposit amounts.

Move-out checklist

Related Washington rules

Frequently asked questions

How much can a landlord charge for a security deposit in Washington?

There is no statutory cap in Washington; the market and the lease decide. Deposits must be held in a trust account with a written checklist of the unit's condition (RCW 59.18.260, 59.18.270); no deposit may be collected without a written rental agreement. Tenants may pay deposits and last month's rent in installments on request (RCW 59.18.283). 2025 HB 1217 (c. 209) did not cap deposit amounts.

How long does a landlord have to return a security deposit in Washington?

Full and specific statement of deductions (with estimates or invoices) and any refund within 30 days after termination of the rental agreement and vacation of the premises. The statute is RCW 59.18.280.

Does a Washington landlord have to pay interest on the security deposit?

No. Washington law does not require interest on residential security deposits.

Deposit rules in other states