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What is the estate tax?

The estate tax is a tax on the value of estates of people living in Washington at the time of their death, or non-residents who own property in Washington State.

Estate Tax forms, rules and information are specific to the date of death.

>>  Deaths on or after May 17, 2005

Filing requirements

Either the Washington estate tax return and estate tax payment or a request for an extension to file the Washington estate tax return and an estimated payment are due nine months after the decedent’s date of death. Join the ListServ Email Service to get future messages about important Washington estate tax information.

If you have questions, e-mail us, or call us at (360) 534-1503.

Estate tax changes (coming soon)

The Department will incorporate recently passed legislation EHB 2075 (Chapter 2, Laws of 2013). Efforts will include rule making (Chapter 458-57 WAC) and form updates prior to the affected filing periods.



More information

Estate tax installment plans for businesses

FAQ: Estate Tax General Questions

FAQ: Estate Tax Deduction for Farms (for deaths on or after May 17, 2005)

Interest Rates

Listserv E-mail Service:  Get messages about important estate tax information

Forms & publications

Estate Tax Forms

Tax Reference Manual (pdf)


Revised Code of Washington (RCW) 83.100

Washington Administrative Code (WAC) 458-57