Not legal advice. This is a free reference compiled from official government sources. Laws change and local details matter. Confirm every deadline with the official source or a licensed attorney before you rely on it.
Last verified: · Confidence: medium
Washington landlord deadline calendar for 2027
Every dated deadline in 2027 from the verified federal, Washington and local rules on this site, grouped by month. Each item shows who it applies to, its official source, the date it was last verified and our confidence. Dates we move for weekends or holidays, or roll forward from a yearly pattern, are labeled as computed. Rules not yet verified are left out.
Federal and Washington statewide dates
January 2027
- Federal estimated tax payment #4 due January 15 (for the previous tax year) Computed date
Computed: January 15, 2027 is a Friday and not a legal holiday, so no change. Base rule:If any payment date falls on a Saturday, Sunday, or legal holiday, use the next business day.
February 2027
- File and furnish Form 1099-NEC for 2026 contractor payments of $2,000+ Computed date
Computed: January 31, 2027 is a Sunday, so the IRS next-business-day rule moves it to Monday, February 1, 2027. Base rule:If any date shown falls on a Saturday, Sunday, or legal holiday in the District of Columbia or where the return is to be filed, the due date is the next business day.
- Furnish Form 1099-MISC to recipients for 2026 rents and other payments of $2,000+ Computed date
Computed: January 31, 2027 is a Sunday, so the IRS next-business-day rule moves it to Monday, February 1, 2027. Base rule:If any date shown falls on a Saturday, Sunday, or legal holiday in the District of Columbia or where the return is to be filed, the due date is the next business day.
March 2027
- File Form 1099-MISC with the IRS for 2026 payments (February 28 on paper, March 31 if e-filed) Computed date
Computed: February 28, 2027 is a Sunday, so the IRS next-business-day rule moves it to Monday, March 1, 2027. Base rule:If any date shown falls on a Saturday, Sunday, or legal holiday in the District of Columbia or where the return is to be filed, the due date is the next business day.
April 2027
- Federal estimated tax payment #1 due April 15 Computed date
Computed: Computed from the yearly April 15 pattern; the official schedule we quote lists April 15, 2026. April 15, 2027 is a Thursday and not a legal holiday, so no change. Base rule:If any payment date falls on a Saturday, Sunday, or legal holiday, use the next business day.
- Report rental income/expenses on Schedule E with Form 1040 Computed date
Computed: April 15, 2027 is a Thursday and not a legal holiday, so no change. Base rule:If day 15 falls on a Saturday, Sunday or legal holiday, the due date is delayed until the next business day.
June 2027
- Federal estimated tax payment #2 due June 15 Computed date
Computed: Computed from the yearly June 15 pattern; the official schedule we quote lists June 15, 2026. June 15, 2027 is a Tuesday and not a legal holiday, so no change. Base rule:If any payment date falls on a Saturday, Sunday, or legal holiday, use the next business day.
September 2027
- Federal estimated tax payment #3 due September 15 Computed date
Computed: Computed from the yearly September 15 pattern; the official schedule we quote lists September 15, 2026. September 15, 2027 is a Wednesday and not a legal holiday, so no change. Base rule:If any payment date falls on a Saturday, Sunday, or legal holiday, use the next business day.
Deadlines that depend on your own dates or events
These rules have no fixed calendar date: they count from a lease date, a move-out, a license date or an event. The calendar builder dates them for your rental.
Federal and Washington statewide
- Signed lead disclosure attachment with lease; keep for 3 years: Keep the signed disclosure for at least 3 years from the lease start; the date shown is the earliest you may discard it
- Within 30 days after move-out: refund the deposit and give a full, specific statement for anything kept, with receipts or estimates: Within 30 days after move-out
- 90 days' written notice of any rent increase, on the state form; no increase during the first 12 months or before a fixed term ends: At least 90 days before the rent increase takes effect
- Ending a qualifying fixed-term lease without cause: at least 60 days' written notice before the term ends: At least 60 days before the lease ends
- Lead-based paint disclosure and EPA pamphlet before lease signing (pre-1978 housing): Before the tenant is obligated under the lease (before signing / before accepting an offer to lease)
- Before taking a deposit: written rental agreement and signed move-in condition checklist; deposit into a Washington trust account with a written receipt: At the start of the tenancy, when the deposit is collected
- Smoke detectors: the owner installs them and makes sure they work before each new tenant moves in: At each vacancy, before the unit is reoccupied
- Written fire safety notice (smoke detector, and for multifamily the evacuation plan) when the lease is signed: When the lease or rental agreement is signed
- Just-cause notice periods: 14-day pay or vacate, 10 days to cure a lease breach, 90 days for owner move-in or sale, 120 days for demolition or rehab: Before ending a tenancy for cause: 14 days to pay rent; at least 10 days to cure a breach; 90 days for owner or family move-in or sale of a single-family home; 120 days for demolition, substantial rehabilitation or change of use
- Late fees: none for rent paid within 5 days after the due date: No late fee for rent paid within 5 days after the due date; after that, fees may run from the day after the due date
- 2 days' written notice before entry (1 day to show the unit): At least 2 days before entry (1 day before showing the unit to prospective tenants or buyers)
Seattle
- 180 days' written notice before any increase in rent or other housing costs: At least 181 days before the rent increase takes effect
- RRIO rental registration: register before renting; renew every 2 years by the certificate's expiration date: Every 2 years from the registration date
- Deposit plus move-in fees capped at one month's rent; tenants may pay them in installments: At move-in, when deposits and fees are set
- RRIO inspection: complete within the deadline in the City's notice (at least 60 days), at least once every 5-10 years: After SDCI's Notice of Required Inspection: by the deadline in the notice (at least 60 days)
Your dates
| Date | Rental 1 | Rental 2 | Rental 3 |
|---|---|---|---|
| Lease start date | |||
| Move-out date | |||
| Rent increase effective date | |||
| Lease end date | |||
| Last license, registration or inspection date |