Washington's top estate tax rate is now 35 percent, the highest of any state, after a mid-2025 overhaul.app.leg.wa.gov. (n.d.). RCW 83.100.020: Definitions (Revised Code of Washington, WA State Legislature). Retrieved Jun 24, 2026, from https://app.leg.wa.gov/rcw/default.aspx?cite=83.100.020 Most families never owe a dime, because the tax only starts above an exclusion of $3,076,000 for deaths in the first half of 2026. This guide tells you whether your estate is on the hook, how much it would owe, when the return is due, and what the new rules changed.
If you are settling an estate or planning your own, the numbers below are the ones that matter.
In This Guide
- Washington Estate Tax at a Glance
- How the Washington Estate Tax Works
- Estate Tax Is Not Inheritance Tax
- Not the Federal Tax, Not Medicaid Recovery
- Who Should Worry About This
- Frequently Asked Questions
- Next Steps
Washington Estate Tax at a Glance
Here is the whole picture in one table. Washington runs a graduated estate tax, paid by the estate before assets pass to heirs, and there is no separate inheritance tax on the people who receive the money.
| Feature | Washington |
|---|---|
| State estate tax? | Yes |
| State inheritance tax? | No |
| Exclusion amount | $3,076,000 (indexed annually) |
| Top rate | 35% on the taxable estate above $9,000,000 |
| Return + payment due | 9 months after death |
| Marital deduction (transfers to spouse) | Yes, unlimited |
| Exclusion portable between spouses? | No |
How the Washington Estate Tax Works
The estate tax is a tax on the value of everything a person owned at death, paid by the estate itself, not by the heirs. The estate's executor files the return and pays the bill out of estate assets before the remainder is distributed.
The first thing to check is the exclusion. Beginning in 2026, Washington indexes the exclusion for inflation, and the Department of Revenue set it at $3,076,000 for deaths between January 1 and June 30, 2026 (with $3,000,000 stated for deaths on or after July 1, 2026, subject to further indexing), up from $2,193,000 for deaths before July 1, 2025.app.leg.wa.gov. (n.d.). RCW 83.100.020: Definitions (Revised Code of Washington, WA State Legislature). Retrieved Jun 24, 2026, from https://app.leg.wa.gov/rcw/default.aspx?cite=83.100.020 If the taxable estate comes in under the exclusion, there is no Washington estate tax and, in most cases, no return to file. Only the value above the exclusion gets taxed.
What counts toward the estate is broader than people expect. The taxable estate generally includes the home and any other real estate, bank and brokerage accounts, retirement accounts like IRAs and 401(k)s, the death benefit of life insurance the deceased owned, business interests, vehicles, and personal property. It is the gross value of what the person owned or controlled at death, not just the cash on hand. In a state with home values as high as Washington's, a long-time homeowner with retirement savings can clear the $3,076,000 exclusion without ever thinking of themselves as wealthy.app.leg.wa.gov. (n.d.). RCW 83.100.020: Definitions (Revised Code of Washington, WA State Legislature). Retrieved Jun 24, 2026, from https://app.leg.wa.gov/rcw/default.aspx?cite=83.100.020
The rate is graduated, meaning it climbs in brackets as the estate gets larger. For deaths on or after July 1, 2025, the top rate is 35 percent on the portion of the taxable estate above $9 million.app.leg.wa.gov. (n.d.). RCW 83.100.020: Definitions (Revised Code of Washington, WA State Legislature). Retrieved Jun 24, 2026, from https://app.leg.wa.gov/rcw/default.aspx?cite=83.100.020 That top figure is new: the previous top rate was 20 percent. So while the higher exclusion shields more small and mid-size estates, the largest estates now pay sharply more on the upper end. Washington's 35 percent is the highest top estate-tax rate in the country.
There is a hard deadline attached to all of this. The Washington estate tax return and any tax due are both due nine months after the date of death.app.leg.wa.gov. (n.d.). RCW 83.100.020: Definitions (Revised Code of Washington, WA State Legislature). Retrieved Jun 24, 2026, from https://app.leg.wa.gov/rcw/default.aspx?cite=83.100.020 You can request an extension of time to file, but it does not extend the time to pay; interest accrues daily on any unpaid tax after the nine-month mark. For an executor, that clock starts the day the person dies, so getting a valuation together early matters.
The single biggest break is for married couples. Washington allows an unlimited marital deduction: property that passes to a surviving spouse (a U.S. citizen), reported on Schedule M of the return and including a QTIP trust election, generally passes free of Washington estate tax.app.leg.wa.gov. (n.d.). RCW 83.100.020: Definitions (Revised Code of Washington, WA State Legislature). Retrieved Jun 24, 2026, from https://app.leg.wa.gov/rcw/default.aspx?cite=83.100.020 In practice, a person who leaves the entire estate outright to a surviving spouse usually owes no Washington estate tax at the first death; the tax question resurfaces at the second spouse's death. Separately, Washington offers a qualifying spousal personal-residence exclusion, which can shield the value of the family home in qualifying cases.app.leg.wa.gov. (n.d.). RCW 83.100.020: Definitions (Revised Code of Washington, WA State Legislature). Retrieved Jun 24, 2026, from https://app.leg.wa.gov/rcw/default.aspx?cite=83.100.020 If a residence is a large share of the estate, this can change the math considerably, so it is worth asking an estate attorney whether your situation qualifies.
There is also a break aimed at family businesses and farms. Washington allows a Qualified Family-Owned Business Interest (QFOBI) deduction, and the Department of Revenue calculated the maximum QFOBI deduction for 2026 deaths at $3,076,000.app.leg.wa.gov. (n.d.). RCW 83.100.020: Definitions (Revised Code of Washington, WA State Legislature). Retrieved Jun 24, 2026, from https://app.leg.wa.gov/rcw/default.aspx?cite=83.100.020 For a family that owns a working business or farm and meets the qualifying conditions, this deduction can remove a large share of the estate from tax, but the rules on what qualifies are technical, so confirm eligibility with a professional before counting on it.
The marital deduction is not the same as portability, and the difference trips people up. The unlimited marital deduction lets assets pass to a surviving spouse tax-free at the first death. Portability would let the surviving spouse inherit the deceased spouse's unused exclusion and stack it on their own, and Washington does not offer that. The exclusion is not portable between spouses.app.leg.wa.gov. (n.d.). RCW 83.100.020: Definitions (Revised Code of Washington, WA State Legislature). Retrieved Jun 24, 2026, from https://app.leg.wa.gov/rcw/default.aspx?cite=83.100.020 Some states allow portability at the state level; Washington does not. So when the surviving spouse later dies, only their own single exclusion applies, no matter how much was sheltered by the marital deduction the first time. For couples with a combined estate near or above the threshold, that gap is exactly what trust planning (a credit-shelter or bypass trust) is designed to work around, and it is a conversation worth having with a professional well before either spouse dies.
Estate Tax Is Not Inheritance Tax
People use these two terms as if they mean the same thing. They do not, and the difference decides who writes the check.
An estate tax is paid by the estate, out of the deceased person's assets, before anything is distributed. An inheritance tax is paid by the heirs, on what each one receives, after distribution. A handful of states (Pennsylvania, New Jersey, and a few others) have an inheritance tax. Washington does not.app.leg.wa.gov. (n.d.). RCW 83.100.020: Definitions (Revised Code of Washington, WA State Legislature). Retrieved Jun 24, 2026, from https://app.leg.wa.gov/rcw/default.aspx?cite=83.100.020 So if you inherit from a Washington estate, you do not owe a Washington inheritance tax on your share. Any tax owed was the estate's responsibility and was settled before you received anything.
That is good news for heirs. The estate tax can reduce how much is left to divide, but it does not land a separate bill on each beneficiary.
Not the Federal Tax, Not Medicaid Recovery
Two other things get confused with the state estate tax. Both are different, and the distinction matters for planning.
The federal estate tax is separate, and its exemption is far higher. The federal basic exclusion is $15 million per person for 2026, raised by the One, Big, Beautiful Bill, roughly five times Washington's exclusion.Internal Revenue Service. (2026). IRS releases tax inflation adjustments for tax year 2026, including amendments from the One, Big, Beautiful Bill. irs.gov. Retrieved Jun 24, 2026, from https://www.irs.gov/newsroom/irs-releases-tax-inflation-adjustments-for-tax-year-2026-including-amendments-from-the-one-big-beautiful-bill,app.leg.wa.gov. (n.d.). RCW 83.100.020: Definitions (Revised Code of Washington, WA State Legislature). Retrieved Jun 24, 2026, from https://app.leg.wa.gov/rcw/default.aspx?cite=83.100.020 A great many estates owe Washington tax while owing nothing to the IRS, because they fall in the gap between the two thresholds. The two taxes are calculated independently, on separate returns. Clearing the federal bar tells you nothing about whether you owe Washington.
Medicaid estate recovery is not a tax at all. It is the process by which a state seeks repayment from the estate of someone who received certain Medicaid-funded long-term care. It applies to a completely different group of people, for a different reason, and is governed by separate rules. If a parent received Medicaid-paid nursing home care, the relevant concern is recovery, not the estate tax. We cover that fully in Medicaid estate recovery; do not let the similar name fool you into treating them as one issue.
Who Should Worry About This
If the total estate, counting the home, retirement accounts, investments, and life insurance the deceased owned, is comfortably under the exclusion (about $3.08 million for 2026 deaths), the Washington estate tax almost certainly does not apply.app.leg.wa.gov. (n.d.). RCW 83.100.020: Definitions (Revised Code of Washington, WA State Legislature). Retrieved Jun 24, 2026, from https://app.leg.wa.gov/rcw/default.aspx?cite=83.100.020 For most families, that is the end of it.
If the estate is near or above the exclusion, it is time to file a return within nine months of death and likely time to bring in a professional. Estate tax planning is genuinely intricate: the marital deduction, spousal residence exclusion, QFOBI deduction, and the lack of portability all turn on details, and the stakes run into six figures fast. An estate attorney or a CPA who handles estates is the right call. This guide is general information, not legal or tax advice.
For the bigger picture of paying for care and protecting assets while a parent is still living, see Building a Senior Care Funding Plan, and if the home is the largest asset, Selling or Renting a Home to Pay for Care.
Frequently Asked Questions
Does Washington have an estate tax?
Yes. Washington levies a graduated state estate tax on estates above the exclusion, which is $3,076,000 for deaths between January 1 and June 30, 2026 and is indexed annually for inflation.app.leg.wa.gov. (n.d.). RCW 83.100.020: Definitions (Revised Code of Washington, WA State Legislature). Retrieved Jun 24, 2026, from https://app.leg.wa.gov/rcw/default.aspx?cite=83.100.020 Estates below that owe no Washington estate tax. The tax is paid by the estate, not by the heirs, and the return is due nine months after death.
What is the Washington estate tax rate?
It is graduated. For deaths on or after July 1, 2025, the top rate is 35 percent on the portion of the taxable estate above $9 million, up from a previous top rate of 20 percent.app.leg.wa.gov. (n.d.). RCW 83.100.020: Definitions (Revised Code of Washington, WA State Legislature). Retrieved Jun 24, 2026, from https://app.leg.wa.gov/rcw/default.aspx?cite=83.100.020 Smaller taxable amounts are taxed at lower bracket rates below that top figure.
Does Washington have an inheritance tax?
No. Washington has no inheritance tax.app.leg.wa.gov. (n.d.). RCW 83.100.020: Definitions (Revised Code of Washington, WA State Legislature). Retrieved Jun 24, 2026, from https://app.leg.wa.gov/rcw/default.aspx?cite=83.100.020 If you inherit from a Washington estate, you do not owe a separate Washington tax on your share. Any estate tax was paid by the estate before distribution.
Is the Washington estate tax the same as the federal estate tax?
No, they are separate. The federal exemption is far higher, $15 million per person for 2026, so many estates owe Washington tax while owing nothing federally.Internal Revenue Service. (2026). IRS releases tax inflation adjustments for tax year 2026, including amendments from the One, Big, Beautiful Bill. irs.gov. Retrieved Jun 24, 2026, from https://www.irs.gov/newsroom/irs-releases-tax-inflation-adjustments-for-tax-year-2026-including-amendments-from-the-one-big-beautiful-bill,app.leg.wa.gov. (n.d.). RCW 83.100.020: Definitions (Revised Code of Washington, WA State Legislature). Retrieved Jun 24, 2026, from https://app.leg.wa.gov/rcw/default.aspx?cite=83.100.020 The two are calculated on separate returns.
Can a surviving spouse use the deceased spouse's exclusion?
No. Washington's exclusion is not portable between spouses.app.leg.wa.gov. (n.d.). RCW 83.100.020: Definitions (Revised Code of Washington, WA State Legislature). Retrieved Jun 24, 2026, from https://app.leg.wa.gov/rcw/default.aspx?cite=83.100.020 A surviving spouse cannot add a late spouse's unused exclusion to their own. That is different from the unlimited marital deduction, which does let assets pass to the surviving spouse tax-free at the first death; portability is about carrying over the exclusion amount, and Washington does not allow it. Couples with combined estates near the threshold often use trust planning to address this, and should consult an estate attorney.
When is the Washington estate tax return due?
The return and any tax due are due nine months after the date of death.app.leg.wa.gov. (n.d.). RCW 83.100.020: Definitions (Revised Code of Washington, WA State Legislature). Retrieved Jun 24, 2026, from https://app.leg.wa.gov/rcw/default.aspx?cite=83.100.020 You can request an extension of time to file, but interest accrues on any unpaid tax after the nine-month mark, so an extension to file is not an extension to pay.
Learn More
Next Steps
Find out whether your estate is near the threshold, and if it is, get a professional involved early, because the return and payment are due nine months after death, so the clock starts at the date of death.app.leg.wa.gov. (n.d.). RCW 83.100.020: Definitions (Revised Code of Washington, WA State Legislature). Retrieved Jun 24, 2026, from https://app.leg.wa.gov/rcw/default.aspx?cite=83.100.020 The exclusion and the new 35 percent top rate are the figures to know, and an estate attorney can tell you how the marital deduction, spousal residence exclusion, and QFOBI deduction apply to you.
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The information on Brevy.com is for educational purposes only and is not a substitute for professional legal, financial, or medical advice. Rules vary by state and program and change frequently. Always verify with the relevant agency or a qualified professional. Brevy is not a law firm, financial advisor, or healthcare provider.