Washington: Security Deposit Return Deadlines & Deductions

Requirements one by one

Governing law

Washington's deposit rules live in three sections of the Residential Landlord-Tenant Act: RCW 59.18.260 (the written-agreement and move-in-checklist requirement), RCW 59.18.270 (the trust-account and interest rule), and RCW 59.18.280 (the return deadline, itemization, permitted and forbidden deductions, and the noncompliance penalty).

Deadline to return the deposit

"Within 30 days after the termination of the rental agreement and vacation of the premises or, if the tenant abandons the premises as defined in RCW 59.18.310, within 30 days after the landlord learns of the abandonment, the landlord shall give a full and specific statement of the basis for retaining any of the deposit, and any documentation required by (b) of this subsection, together with the payment of any refund due the tenant." (RCW 59.18.280(1)). The landlord satisfies this by personal delivery or first-class mail to the tenant's last known address within the 30 days.

Itemized statement required?

Yes. The written statement has to be "full and specific," and for any property-damage deduction, the landlord must attach "copies of estimates received or invoices paid to reasonably substantiate damage charges" — including a bill or receipt for materials if the landlord's own employee did the repair work, and a statement of hours and hourly rate if labor is charged. That documentation duty drops away, though, when the deposit is withheld for something other than property damage: "The requirements with respect to checklists and documentation... do not apply to situations in which part or all of a security deposit is withheld by the landlord for reasons unrelated to damages to the premises, fixtures, equipment, appliances, and furnishings, such as for rent or other charges owing." (RCW 59.18.280(4)).

What can be deducted

Unpaid rent or other lease charges can be withheld without any receipts. For property damage, the landlord can only charge for damage beyond "wear resulting from ordinary use of the premises," and only for conditions that were reasonably documented on the signed move-in checklist required by RCW 59.18.260. Four categories are expressly off-limits: "(i) For wear resulting from ordinary use of the premises; (ii) For carpet cleaning unless the landlord documents wear to the carpet that is beyond wear resulting from ordinary use of the premises; (iii) For the costs of repair and replacement of fixtures, equipment, appliances, and furnishings if their condition was not reasonably documented in the written checklist... or (iv) In excess of the cost of repair or replacement of the damaged portion in situations in which the premises... are damaged in excess of wear resulting from ordinary use... but the damage does not encompass the item's entirety." (RCW 59.18.280(1)(c)).

Maximum deposit amount

Washington sets no statewide cap. A landlord can charge any amount, so long as the written rental agreement itself specifies the deposit amount and the conditions under which it may be withheld (RCW 59.18.260(1)). A separate, unrelated cap exists only for a holding fee to reserve a unit before move-in — that fee is capped at 25% of the first month's rent (RCW 59.18.610(4)(b)) — but it isn't the security deposit itself.

Interest on the deposit?

No, not for the tenant. The deposit must sit in an eligible trust account, but "unless otherwise agreed in writing, the landlord shall be entitled to receipt of interest paid on such trust account deposits" (RCW 59.18.270) — meaning the statute's default gives any interest earned to the landlord, not the tenant, unless the two of them agree in writing to do something different.

Penalty for a late/bad-faith withholding

Missing the 30-day deadline or the documentation requirement is costly: "he or she shall be liable to the tenant for the full amount of the deposit," and the landlord is "barred... from asserting any claim or raising any defense for retaining any of the deposit" unless circumstances beyond the landlord's control prevented compliance, or the tenant abandoned the unit (RCW 59.18.280(2)). On top of that automatic forfeiture, "the court may in its discretion award up to two times the amount of the deposit for the intentional refusal of the landlord to give the statement, documentation, or refund due." The tenant who wins a deposit lawsuit also recovers "the cost of suit or arbitration including a reasonable attorneys' fee."

Separate account or bond required?

Yes. The deposit must be "promptly... deposited by the landlord in a trust account... in a financial institution... or licensed escrow agent located in Washington," and the landlord must give the tenant a written receipt plus written notice of the depository's name, address, and location — and notice again if that ever changes (RCW 59.18.270). If the landlord's interest in the property changes hands mid-tenancy, the deposit has to move with it into an equivalent trust account, and the new landlord must promptly tell the tenant where it now sits. The tenant's claim to the money outranks any of the landlord's other creditors, including in a bankruptcy, even if the funds were improperly commingled.

What trips people up

Deductions for rent don't need receipts, but deductions for damage do — mixing the two up can cost a landlord the whole deposit. If a landlord lumps an unpaid-rent charge in with a damage claim but doesn't back the damage portion with invoices or estimates, only the rent portion is safe; the undocumented damage charge risks the full-deposit forfeiture penalty.

No move-in checklist means no damage deductions at all, no matter how real the damage is. RCW 59.18.280(1)(c)(iii) blocks a charge for any fixture, appliance, or furnishing damage that wasn't "reasonably documented in the written checklist" at move-in — a landlord who skipped the checklist has effectively given up that category of deduction.

If sold or foreclosed on, your deposit doesn't just vanish — but you may have to chase two different people for it. RCW 59.18.270 requires a departing landlord to promptly refund your deposit if it isn't transferred to whoever takes over the property, and makes that landlord liable for up to double the deposit if neither the refund nor the transfer happens.

Common questions

Does my Washington landlord owe me interest on my deposit? No — by default the statute gives any interest earned on the trust account to the landlord, not you, unless you and the landlord agreed in writing to something else.

Is there a limit on how big my security deposit can be? Not under state law. Some cities, including Seattle, cap deposits locally, but Washington's own statute leaves the amount up to the written rental agreement.

My landlord withheld money for a cracked cabinet that wasn't on my move-in checklist — can they do that? No. Washington law specifically forbids charging for damage to fixtures, appliances, or furnishings whose condition wasn't documented on the signed checklist at move-in.

Statutes and sources

• RCW 59.18.280(1) — the 30-day return/itemization deadline and documentation duty.
  https://app.leg.wa.gov/rcw/default.aspx?cite=59.18.280 (accessed 2026-07-06)
• RCW 59.18.280(1)(c) — the four forbidden-deduction categories.
  https://app.leg.wa.gov/rcw/default.aspx?cite=59.18.280 (accessed 2026-07-06)
• RCW 59.18.280(2) — the noncompliance penalty (forfeiture, up to 2x damages, fees).
  https://app.leg.wa.gov/rcw/default.aspx?cite=59.18.280 (accessed 2026-07-06)
• RCW 59.18.280(4) — exempting rent/other-charge deductions from the checklist/documentation rules.
  https://app.leg.wa.gov/rcw/default.aspx?cite=59.18.280 (accessed 2026-07-06)
• RCW 59.18.270 — trust-account, receipt, and interest requirements.
  https://app.leg.wa.gov/rcw/default.aspx?cite=59.18.270 (accessed 2026-07-06)
• RCW 59.18.260(1)-(2) — written-agreement and move-in-checklist requirements.
  https://app.leg.wa.gov/rcw/default.aspx?cite=59.18.260 (accessed 2026-07-06)