✓ Verified June 2026
This guide explains Washington estate tax and inheritance tax in plain English — whether Washington taxes your estate, who pays, the exact exemptions, and how the federal estate tax fits in for 2026. All figures verified as of June 2026.
In This Washington Guide:
Washington Estate & Inheritance Tax at a Glance
Here is exactly how Washington estate tax and inheritance tax work:
| Does Washington have an estate tax? | YES |
| State estate-tax exemption | Washington has a split year in 2026. For deaths January 1 through June 30, 2026, the applicable exclusion amount is 3076000 (inflation-adjusted). For deaths on or after July 1, 2026, the exclusion amount is frozen at 3000000 with no further inflation adjustments due to an expired CPI provision in the statute. SB 6347, signed by Governor Ferguson, rolled back a 2025 rate increase. |
| State estate-tax top rate | Split year. For deaths January 1 through June 30, 2026, the top marginal rate is 35 percent (enacted in 2025). For deaths on or after July 1, 2026, the top marginal rate reverts to 20 percent. The graduated rate brackets for deaths on or after July 1, 2026 are: 0 to 1000000 at 10 percent, 1000000 to 2000000 at 14 percent, 2000000 to 3000000 at 15 percent, 3000000 to 4000000 at 16 percent, 4000000 to 6000000 at 18 percent, 6000000 to 7000000 at 19 percent, 7000000 to 9000000 at 19.5 percent, and over 9000000 at 20 percent. These rates apply to the Washington taxable estate (the amount above the exclusion). |
| Does Washington have an inheritance tax? | NO |
| Federal estate-tax exemption (2026) | 15000000 per individual. The Tax Cuts and Jobs Act of 2017 had originally doubled the federal exemption and was scheduled to sunset after December 31, 2025, which would have dropped the exemption back to approximately 7000000 (the pre-TCJA level adjusted for inflation). However, the One Big Beautiful Bill Act, signed into law on July 4, 2025, extended and raised the exemption to 15000000 for 2026. The federal top estate tax rate remains 40 percent. |
Spousal portability (federal): Yes. Federal law allows a surviving spouse to use the deceased spouse’s unused federal exclusion amount (called portability). A timely filed federal estate tax return (IRS Form 706) is required to elect portability, even if the estate owes no federal tax. Washington state does NOT offer portability of its own state-level exclusion.
Gift tax: Washington does not have a state-level gift tax. Lifetime gifts by Washington residents are not subject to any state gift tax and do not reduce the Washington estate tax exclusion. Only federal gift tax rules apply. The federal annual gift tax exclusion for 2026 is 19000 per recipient. Gifts above that count against the 15000000 lifetime federal exemption.
Who Actually Owes Estate Tax in Washington
Most Washington families will owe no state estate tax because the exemption shelters the first 3000000 (or 3076000 for deaths before July 2026). Washington’s estate tax generally affects estates above those thresholds. Families with real estate, business interests, or retirement accounts that push the gross estate above the exclusion amount may want to consult a licensed estate planning attorney or CPA.
Washington also offers a spousal personal residence exclusion (the family home can be excluded from the filing threshold calculation if it passes to a surviving spouse), an unlimited farm deduction for qualifying agricultural property, a qualified family-owned business interest deduction, and installment payment plans for closely held businesses. These provisions may further reduce or defer state estate tax.
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Other Washington estate/inheritance tax rules: Washington is one of only 12 states (plus DC) that imposes its own estate tax separate from the federal estate tax. Key unique rules: (1) Split-year 2026 with different rates and exemptions before and after July 1 due to SB 6347 rolling back a 2025 rate increase.
(2) The state exclusion amount is frozen at 3000000 effective July 1, 2026 with no future inflation adjustments because the CPI adjustment provision expired. (3) Washington does NOT allow portability of the state exclusion between spouses, unlike the federal system. (4) A spousal personal residence exclusion allows the surviving spouse’s home to be excluded when determining whether the estate meets the filing threshold.
(5) An unlimited deduction for qualifying farm property (land, livestock, equipment) if farm assets comprise at least 50 percent of the adjusted estate value. (6) A qualified family-owned business interest deduction is available for eligible closely held businesses. (7) Estates may elect installment payment plans for closely held business interests.
(8) Washington’s estate tax is computed on the Washington taxable estate after all deductions and the applicable exclusion, using a graduated rate schedule under RCW 83.100.040. (9) The estate tax return is due 9 months after the date of death, filed with the Washington Department of Revenue.
Understanding Washington Estate and Inheritance Tax
Worrying about Washington estate tax is common, but most families owe nothing. Whether Washington estate tax applies depends on the size of the estate and whether Washington levies an estate tax, an inheritance tax, or neither. The table above shows the exact exemptions and rates, plus the federal exemption and its 2026 change, so you can see where you actually stand on Washington estate tax.
If your estate is large enough that Washington estate tax could apply, a licensed tax professional in your state can help you plan.
Official Washington Sources & Resources
- Washington Department of Revenue: https://dor.wa.gov/taxes-rates/other-taxes/estate-tax
- Washington Estate Tax Statute: https://app.leg.wa.gov/rcw/default.aspx?cite=83.100
- Internal Revenue Service — Estate Tax: irs.gov
- Cornell Legal Information Institute: law.cornell.edu/wex
This Washington estate-tax guide was last verified against official sources in June 2026. Tax laws and exemptions change yearly — verify with your state revenue department or a licensed tax professional.
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Disclaimer: This guide is informational only and is not legal or tax advice. Estate, probate, and tax laws change and vary by state and county. Verify current rules and dollar figures with your state’s court, statute, or a licensed attorney or tax professional before acting. For urgent matters like an active probate or a tax deadline, consult a licensed professional in your state right away.