Disclaimer: This article is general information for Washington rental owners and residents and is not legal advice. Landlord-tenant law changes, and city ordinances often add stricter rules than state law. For advice on your specific situation, consult a qualified Washington attorney or contact your local housing authority. Wilson Management, Inc. is a property management company, not a law firm.
Few parts of a Washington tenancy create more confusion — or more disputes — than the money collected at move-in. How much can a landlord charge as a security deposit? Are move-in fees legal? Can a tenant pay in installments? And how fast does the deposit have to come back?
This guide breaks down the Washington security deposit limit rules, allowable move-in fees, last month's rent, the required paperwork, and the local caps in cities like Seattle and Tacoma that go beyond state law. For a deeper look at how deposits may be used and returned, see our companion page on Washington security deposit law.
Security deposits in Washington: limits and caps
Here is the surprise for many people: Washington state law sets no dollar cap or maximum on the size of a residential security deposit. The Residential Landlord-Tenant Act (RCW 59.18) regulates how deposits must be documented, handled, and returned — but it does not say a deposit can't exceed one month's rent statewide (Source: Wash. Tenants Union, Deposits FAQ; RCW 59.18.260).
That said, a deposit cannot be collected at all unless two conditions are met:
- The rental agreement is in writing and states the terms under which the deposit may be withheld; and
- The landlord provides a written move-in checklist describing the condition of the unit (Source: RCW 59.18.260, leg.wa.gov).
If a landlord collects a deposit without meeting these requirements, the landlord is liable to the tenant for the full amount of the deposit (Source: RCW 59.18.260, leg.wa.gov).
Important: While there is no statewide deposit cap, several cities impose their own limits — and those local caps control inside city limits. See the Local rules section below.
Move-in fees & last month's rent: what's allowed
Beyond the security deposit, Washington landlords commonly collect nonrefundable move-in fees (such as a cleaning fee or administrative fee) and last month's rent. State law allows these, but with strict labeling rules.
Nonrefundable fees must be clearly labeled. Under RCW 59.18.285, "no moneys paid to the landlord which are nonrefundable may be designated as a deposit," and the written rental agreement must "clearly specify that the fee is nonrefundable." If the agreement fails to say a fee is nonrefundable, the fee is treated as a refundable deposit — and if there's no written agreement at all, the landlord is liable to the tenant for the amount collected (Source: RCW 59.18.285, leg.wa.gov).
The 25% installment threshold. A landlord is not required to offer an installment plan only if both of these are true: the total of all deposits and nonrefundable fees is 25% or less of the first full month's rent, and last month's rent is not required up front. If a landlord charges more than that 25% combined, or requires last month's rent at move-in, the tenant gains installment rights (described next) (Source: RCW 59.18.610, leg.wa.gov; justia.com).
Installment rights for deposits, fees, and last month's rent
Upon a tenant's written request, a landlord must allow the deposits, nonrefundable fees, and last month's rent to be paid in installments (Source: RCW 59.18.610, leg.wa.gov):
- Leases of 3 months or longer: three consecutive, equal monthly installments.
- Shorter terms (under 3 months, including month-to-month): two consecutive, equal monthly installments.
The landlord may not charge interest, a fee, or any extra cost because a tenant pays in installments, and the installment schedule must be in writing and signed by both parties (Source: RCW 59.18.610, leg.wa.gov). Note that some cities (such as Seattle and Tacoma) require longer installment plans — see below.
Required move-in checklist & written rental agreement
The written move-in checklist is not optional paperwork — it is the legal gateway to collecting a deposit at all.
- The checklist must be provided at the commencement of the tenancy and must "specifically describe the condition and cleanliness of or existing damages to the premises, fixtures, equipment, appliances, and furnishings" (Source: RCW 59.18.260, leg.wa.gov).
- Best practice is for both landlord and tenant to sign the checklist before keys are handed over, and for the tenant to keep a copy (Source: Wash. Tenants Union, Deposits FAQ). — RCW 59.18.260 requires the checklist; the mutual-signature timing here is widely recommended practice, confirm exact statutory wording before publish.
- The rental agreement itself must be in writing and spell out the conditions under which deposit money may be kept (Source: RCW 59.18.260, leg.wa.gov).
For owners, this checklist is also the single best protection against a deposit dispute later. Without documented move-in condition, it is very difficult to justify any deductions at move-out.
Deposit handling & the 30-day return deadline
When a tenancy ends, Washington gives landlords a firm timeline.
- Within 30 days after the rental agreement terminates and the tenant vacates, the landlord must deliver a full and specific written statement of why any portion of the deposit is being kept, the required documentation, and any refund owed (Source: RCW 59.18.280, leg.wa.gov).
- This 30-day deadline is current as of 2026; it was extended from 21 days to 30 days by HB 1074, effective July 23, 2023 (Source: ipropertymanagement.com summary of HB 1074; RCW 59.18.280). the HB number / effective date against the session law before publish.
- Mailing the statement and refund first-class to the tenant's last known address within 30 days satisfies the deadline (Source: RCW 59.18.280, leg.wa.gov).
Penalties for missing the deadline are significant. A landlord who fails to comply is "liable to the tenant for the full amount of the deposit," and a court may, in its discretion, award up to two times the deposit for an intentional refusal — plus the prevailing party's costs and reasonable attorney's fees (Source: RCW 59.18.280, leg.wa.gov).
Local rules: Seattle, Tacoma, and beyond
City ordinances frequently impose stricter caps than state law. Always check the rules for the city where the property sits.
Seattle. Seattle caps the combined total of security deposits plus nonrefundable move-in fees at no more than one month's rent, and limits a pet damage deposit to 25% of one month's rent. Seattle tenants may also request a payment plan of up to six months for the deposit, nonrefundable fees, and last month's rent (Source: Wash. Tenants Union, Deposits FAQ; gpsrenting.com Seattle guide, 2025). current Seattle Municipal Code figures with SDCI before publish — SDCI Renting in Seattle line: (206) 684-5700.
Tacoma. Under Tacoma's rental housing code, total move-in costs — including the security deposit and application fee — may not exceed one month's rent, and a pet deposit may not exceed 25% of one month's rent. Tacoma also requires landlords to offer installment plans (up to six monthly installments for leases of six months or longer) and to give applicants the City's installment-payment form when the lease is offered (Source: RHAWA, Tacoma Rental Code; waproplaw.com Tacoma guide, 2024). current Tacoma Municipal Code figures and form requirement with the City of Tacoma before publish.
Other cities (for example, Bellingham) have adopted their own rental-fee rules in recent years, so a property in one city may follow very different limits than an identical unit a few miles away (Source: City of Bellingham, new rental fee laws, eff. Aug. 1, 2025). applicability to your specific city.
Because these local caps can override the more permissive state rules, confirming the rules for your specific city is essential before setting any move-in figure.
How Wilson Management handles deposits & move-in funds
Wilson Management, Inc. has managed rental property across Bellevue and the Greater Seattle area since 1982. Our owners rely on us to keep move-in money fully compliant so a deposit dispute never costs them double damages.
For every tenancy we manage, we:
- Use a written rental agreement with clear, lawful deposit-withholding terms.
- Complete and document a written move-in checklist before keys are handed over.
- Clearly label any nonrefundable fee as nonrefundable in the agreement.
- Offer and document installment plans where the law requires them, with no added fees or interest.
- Track the 30-day return clock and deliver an itemized statement and any refund on time.
- Apply the correct city-specific caps for Seattle, Tacoma, and the other communities we serve.
New to being a landlord? Our first-time landlord guide for Washington and our broader Washington landlord-tenant law guide walk through the rest of the rulebook.
Frequently Asked Questions
1. Is there a maximum security deposit in Washington?
No statewide dollar cap exists; state law regulates documentation and return, not the deposit's size (Source: Wash. Tenants Union, Deposits FAQ; RCW 59.18.260). However, cities such as Seattle and Tacoma cap combined deposits and move-in fees at one month's rent.
2. Are nonrefundable move-in fees legal in Washington?
Yes, but a nonrefundable fee can never be called a "deposit," and the written rental agreement must clearly state the fee is nonrefundable. Otherwise it is treated as a refundable deposit (Source: RCW 59.18.285, leg.wa.gov).
3. Can a tenant pay the deposit and last month's rent in installments?
Yes. On written request, a landlord must allow installment payment — three equal installments for leases of 3+ months, or two for shorter terms — with no interest or added fee, unless the combined deposits and fees are 25% or less of the first month's rent and last month's rent isn't required up front (Source: RCW 59.18.610, leg.wa.gov). Seattle and Tacoma require longer plans.
4. How many days does a landlord have to return a security deposit?
30 days from the end of the tenancy and vacating, to deliver a written statement and any refund. Missing it can make the landlord liable for the full deposit, and a court may award up to double (Source: RCW 59.18.280, leg.wa.gov).
5. What happens if no move-in checklist is provided?
If a landlord collects a deposit without giving the tenant a written move-in checklist at the start of the tenancy, the landlord is liable to the tenant for the full amount of the deposit (Source: RCW 59.18.260, leg.wa.gov).
Ready for hands-off, compliant property management?
Whether you own a single rental or a portfolio across the Eastside and Greater Seattle, Wilson Management keeps your deposits and move-in funds fully compliant — and your residents fairly treated.
- Call us: (425) 453-0089
- Get a free rental analysis to see what your property should earn.
- Contact us to talk with our team. Wilson Management, Inc., led by President Gary E. Wilson, has served Bellevue and the Greater Seattle area since 1982.
Disclaimer: This article is general information, not legal advice, and laws change. City ordinances may impose stricter requirements than state law. Confirm current rules for your property's city and consult a licensed Washington attorney for advice on your specific situation.
Sources
- RCW 59.18.260 — Moneys paid as deposit; written rental agreement and checklist required: https://app.leg.wa.gov/RCW/default.aspx?cite=59.18.260
- RCW 59.18.270 — Deposit moneys to be held in trust (referenced for deposit handling): https://app.leg.wa.gov/rcw/default.aspx?cite=59.18.270
- RCW 59.18.280 — Statement and notice of basis for retaining deposit; 30-day deadline; penalties: https://app.leg.wa.gov/rcw/default.aspx?cite=59.18.280
- RCW 59.18.285 — Nonrefundable fees: https://app.leg.wa.gov/rcw/default.aspx?cite=59.18.285
- RCW 59.18.610 — Installments: deposits, nonrefundable fees, and last month's rent: https://app.leg.wa.gov/rcw/default.aspx?cite=59.18.610
- Washington Tenants Union — Deposits FAQ: https://tenantsunion.org/rights/deposits-faq
- WashingtonLawHelp — Deposits and damages: https://www.washingtonlawhelp.org/en/deposits-and-damages
- Seattle SDCI — Deposit Returns: https://www.seattle.gov/sdci/codes/common-code-questions/deposit-returns
- GPS Renting — Seattle Security Deposit Laws 2025: https://gpsrenting.com/seattle-security-deposit-laws-explained-a-landlords-2025-guide/
- RHAWA — Tacoma Rental Code: https://www.rhawa.org/blog/tacoma-rental-code--measure-1
- City of Bellingham — New rental fee laws (eff. Aug. 1, 2025): https://cob.org/services/housing/housing-laws-tenant-and-landlord-support/housing-laws-rental-protections-and-requirements/new-rental-fee-laws
- ipropertymanagement.com — Washington Security Deposit Returns (HB 1074 summary): https://ipropertymanagement.com/laws/washington-security-deposit-returns