Can a Washington Landlord Raise Rent Mid-Lease in 2026? Fixed-Term Rule, 90-Day Notice & 9.683% Cap

The short answer

For an ordinary Washington residential tenancy covered by the Residential Landlord-Tenant Act, RCW 59.18.140 states that a rent increase may not become effective before the completion of the term of the rental agreement. Giving advance notice does not by itself allow a landlord to make a higher rent take effect in the middle of an existing fixed term.

Washington also generally requires at least 90 days' prior written notice for residential rent increases. The notice rule and the fixed-term rule work together: the required notice must be given and the effective date still cannot precede the end of the current fixed term unless a specific statutory exception applies.

A 90-day notice does not automatically permit a mid-lease increase

RCW 59.18.140(3)(a) requires a minimum of 90 days' prior written notice for most rent increases and separately provides that an increase may not become effective before the rental agreement term is completed.

That means a landlord cannot ordinarily solve a mid-lease timing problem simply by serving the notice early enough. Subsidized tenancies and a narrow transition provision for certain increases noticed before the 2025 law took effect have different statutory rules, so the tenancy and effective date should be checked before relying on the general rule.

Washington's 2026 annual cap is 9.683% for covered residential rentals

Washington's Department of Commerce publishes the annual maximum rent increase for residential properties covered by the current rent-stabilization law unless an exemption applies. For January 1 through December 31, 2026, Commerce lists the maximum annual increase as 9.683%.

The percentage cap is separate from lease timing. An increase below 9.683% is not automatically valid if it is scheduled to take effect before a fixed term ends, lacks the required notice, occurs during the first 12 months of the tenancy, or does not satisfy another applicable rule.

The first 12 months have an additional restriction

Washington's Attorney General and Department of Commerce state that a landlord may not raise rent in any amount during the first 12 months after a covered residential tenancy begins. The restriction applies whether the tenancy is month-to-month or for a fixed term.

After the first 12 months, the annual percentage limit and timing rules still apply. A tenant or landlord therefore should check both how long the tenancy has existed and when the current fixed term ends.

Seattle has a stricter 180-day notice rule

Seattle's official Renting in Seattle guidance requires at least 180 days' advance written notice before a housing-cost increase. The city also states that housing costs cannot be increased during a fixed-term lease and may be increased only when the rental agreement is month-to-month or up for renewal.

For a Seattle rental, the local 180-day notice requirement can therefore be stricter than Washington's statewide 90-day minimum. The fixed-term restriction still matters separately: a long notice period does not make an increase effective before the lease term permits it.

What if the landlord says higher HOA costs justify the increase?

A landlord's operating expenses can change during a tenancy, including taxes, insurance, utilities or association charges. But a higher HOA or other operating cost does not by itself erase the statutory timing rule for an ordinary fixed-term residential lease.

The practical question is whether the proposed increase complies with the lease, RCW 59.18.140, the current rent-stabilization law, the required notice form, any exemption and any applicable local rule. A business reason for seeking more rent is not a substitute for those requirements.

What records should renters and landlords keep?

Keep the signed lease and every renewal, the current rent amount, prior rent-increase notices, the date the tenancy began, the date the current fixed term ends, the proposed effective date, and the Washington rent-and-fee increase notice.

If the parties disagree about whether an increase can take effect, preserve communications and payment records rather than relying on a verbal explanation. Washington's Attorney General accepts complaints about potentially unlawful rent increases and publishes tenant-rights guidance, while the statute and applicable local law remain the controlling legal sources.

Use Max Rental Tools after the timing check

Use Max Rental Tools to calculate the percentage change, review the Washington state guide, and prepare or review a rent-increase notice only after confirming that the proposed effective date is permitted. The linked Washington statute, Attorney General, Department of Commerce and Seattle sources should control over summaries or community comments.