Washington State Commercial Late Fees and Grace Periods

Disclaimer: This guide provides general legal information for educational purposes only and does not constitute legal advice. Always consult a licensed commercial real estate attorney in Washington state for advice specific to your situation. Information last verified: March 2026.

This is a critical area where the residential and commercial worlds diverge completely in Washington state.

• Residential: The RLTA mandates a 5-day grace period before late fees can accrue, and cities like Seattle cap fees at a mere $10. Landlords cannot evict solely for unpaid late fees, and late fees cannot be included on a 14-Day Pay or Vacate notice.
• Commercial: None of these protections apply. The commercial lease is the sole authority.

1. No Statutory Grace Period

There is no Washington statute granting commercial tenants a grace period for rent payments.

If a commercial lease states rent is due "on the 1st of the month" and contains no written grace period, the tenant is legally in default if the funds have not cleared by midnight on the 1st.

While most well-drafted commercial leases include a negotiated grace period (e.g., "rent is due on the 1st, but no default interest will apply if paid by the 5th"), this is entirely a contractual courtesy, not a statutory right.

2. No Statutory Late Fee Cap

Unlike the rapidly tightening residential caps (1.5% statewide, or $10 in Seattle), Washington law imposes no cap on commercial late fees. The fee structure negotiated in the lease is entirely enforceable, provided it does not constitute an unconscionable "penalty" under general contract law.

Standard commercial late fee structures include:

The Flat Administration Charge

A fixed dollar amount or percentage triggered when the grace period expires.

• A flat fee of $100 to $500, or a straight 5% of the outstanding monthly balance, is standard and defensible.

Default Interest (Per Diem Penalty)

The heavier mechanism. A standard clause dictates that once rent is delinquent, "Default Interest" begins accruing daily on the outstanding balance.

• Commercial leases typically set this at a firm 12% to 18% annual rate, or a formula like "4% above the Prime Rate."
• While not capped, a patently usurious rate (e.g., 40% annualized) may be struck down by a Washington court as an unconscionable penalty.

3. Late Fees CAN Be Included in Eviction Demands

Another critical difference: unlike residential evictions where late fees must be excluded from the 14-Day Pay or Vacate notice, a commercial landlord can include all outstanding balances—base rent, late fees, default interest, and NNN arrears—in their eviction demand letter. This makes commercial eviction notices significantly more aggressive.

See our Commercial Eviction Process guide.

How Landager Helps Commercial Landlords in Washington

The most dangerous compliance error for a Washington landlord with a mixed portfolio is accidentally applying the residential 5-day grace period to a commercial tenant, or applying a commercial-style $500 late fee to a Seattle residential tenant (where the cap is $10). Landager's asset classification system prevents this entirely. Each property is locked to its legal classification at onboarding. The system enforces the exact grace period and late fee formula unique to each lease, automatically calculating per diem default interest the moment the commercial grace period expires, while ensuring your residential accounts never breach the RLTA.

Back to Washington Commercial Landlord-Tenant Laws Overview.