Probate in Washington State: Estate Tax, Timeline & Costs

Washington State combines a relatively efficient probate process — the nonintervention system requires minimal court involvement — with one of the more significant state estate taxes in the country. With a threshold of $3 million and rates up to 20%, many Seattle-area families face Washington estate tax even on estates that don't feel exceptionally large. Community property rules and the community property agreement add additional layers that are specific to Washington.

How Washington Probate Works: Step by Step

Washington probate is filed in the Superior Court of the county where the deceased was domiciled. Washington uses a nonintervention system — when the will grants nonintervention powers (as most Washington wills do), the executor manages the estate with minimal court supervision between appointment and closing.

1. 1
   File petition (Days 1–21)The named executor files a Petition for Probate and Appointment of Personal Representative with the Superior Court. The petition requests that the will be admitted and that the executor be appointed with nonintervention powers. A hearing is typically scheduled within 2–4 weeks of filing. King County courts may have longer wait times.
2. 2
   Appointment hearing (Week 2–4)At the hearing, the court admits the will to probate and issues Letters Testamentary granting the executor nonintervention authority. With nonintervention powers, the executor can sell estate property, pay debts, and distribute assets without returning to court for approval at each step. A judge is not needed again unless a dispute arises.
3. 3
   Notice to creditors (Months 1–2)The executor publishes a Notice to Creditors in a local newspaper once a week for three consecutive weeks, and can mail notice to creditors who are reasonably ascertainable (RCW 11.40.020). Creditors generally must present claims within 4 months after the first publication, or within 30 days after being mailed notice if that is later (RCW 11.40.051).
4. 4
   Inventory and estate tax return (Months 1–9)The executor prepares an Inventory listing all probate assets at fair market value on the date of death and files it with interested parties. If the gross estate exceeds the Washington estate tax threshold, the Washington Estate and Transfer Tax Return is due 9 months from the date of death. Payment is also due at the same time.
5. 5
   Creditor period and debt payment (Months 2–6)After the 4-month creditor period closes, the executor pays valid claims in the order of priority set by Washington law. Income earned by the estate during administration is subject to federal income tax (Washington has no state income tax). The decedent's final income tax return is also due.
6. 6
   Distribute and close (Months 6–12)After debts are paid, the executor distributes assets per the will or intestacy. With nonintervention authority, no court hearing is required for distribution. The executor files a Declaration of Completion — or obtains a court order approving a final report — and the estate closes. Beneficiaries who receive their shares sign receipts confirming distribution.

Washington State Estate Tax

Washington imposes a state estate tax under RCW 83.100.040 on the taxable estate of Washington residents (and non-residents owning Washington property). The exclusion amount is $3,000,000 for deaths on or after July 1, 2026. It is no longer adjusted for inflation each year.

Tax rates are graduated, ranging from 10% on the first dollars above the exemption to 20% on the amount above $9 million. Washington's 20% top rate is among the highest state estate tax rates in the country.

If the death was between July 1, 2025 and June 30, 2026, different numbers apply. The exclusion was $3,000,000 for deaths in late 2025 and $3,076,000 for deaths in early 2026, and the top rate for that whole period was 35%. Use the Department of Revenue's estate tax tables for the date of death.

• Marital deduction: Assets left to a surviving U.S. citizen spouse qualify for the unlimited marital deduction — no Washington estate tax owed on those transfers. However, those assets are included in the surviving spouse's estate when they die, potentially creating a large second-estate tax liability.
• Seattle real estate context: A family with a $1.8 million home, $900,000 in retirement accounts, and $600,000 in investment accounts has a total estate of $3.3 million — already above the exemption. Retirement account growth and rising home values make this a realistic scenario for many King County families.
• Estate tax return: Due 9 months from date of death. Payment is also due at that time. Interest accrues on unpaid amounts.
• Family-owned business or farm: Washington provides a special use valuation for certain agricultural land and a deduction for qualifying family-owned businesses — worth reviewing with a Washington estate tax attorney if applicable.

Community Property and the Community Property Agreement

Washington is a community property state. All property acquired during the marriage — wages, real estate purchased with marital funds, investment accounts funded from marital income — is community property, owned equally by both spouses. Property owned before marriage or received during marriage as a gift or inheritance is separate property.

At death, the surviving spouse already owns their half of community property — that half is not part of the decedent's probate estate. Only the decedent's half of community property is subject to probate (unless a community property agreement or right of survivorship designation applies).

Community property agreement (RCW 26.16.120). Washington married couples can execute a written community property agreement — typically recorded with the county auditor — that designates all property (current and future) as community property and provides that all of it passes to the surviving spouse at death without probate. When both spouses die, the assets may then be subject to probate at the second death. The community property agreement does not trigger gift tax when executed. It can be revoked or amended during the couple's joint lives.

A community property agreement paired with a well-funded marital trust can both avoid probate for the first spouse's death and defer Washington estate tax until the second death — a common strategy for Washington couples with estates above the exemption.

Small Estate Affidavit in Washington

When the deceased's probate estate is worth $100,000 or less — after subtracting liens and not counting a surviving spouse's or domestic partner's half of community property (RCW 11.62.010) — a successor can collect personal property from banks, brokerages, and the Department of Licensing using a small estate affidavit without opening probate. The affidavit must state that no probate proceeding is pending or has been commenced and that the affiant is a successor entitled to the property. Wait 40 days from the date of death before using the affidavit. It does not transfer real estate.

Assets held jointly with right of survivorship, accounts with named beneficiaries, and assets in a living trust do not count toward the $100,000 threshold — which allows many estates with significant non-probate assets to qualify.

What Happens Without a Will in Washington

Washington's intestacy rules (RCW 11.04.015) are more complex than most states because they must account separately for community property and separate property. Community property and separate property distribute to different people in different amounts.

Community property: The surviving spouse or registered domestic partner receives all of the deceased's share of the net community estate, whether or not the deceased had children from another relationship (RCW 11.04.015).

Separate property:

• Spouse + descendants: 1/2 of separate property to spouse, 1/2 to descendants.
• Spouse + parents but no descendants: 3/4 to spouse, 1/4 to parents.
• Spouse + siblings but no descendants or parents: 3/4 to spouse, 1/4 to siblings.
• No surviving spouse — descendants only: all to descendants per stirpes.
• No surviving spouse, no descendants: parents equally, then siblings, then more remote relatives.

How to Avoid Probate in Washington

• Community property agreement (RCW 26.16.120). For married couples, the most powerful Washington-specific tool. All community property passes to the surviving spouse without probate. Must be executed and recorded before death.
• Revocable living trust. Avoids probate for all assets transferred to the trust during the owner's life. Also protects privacy (trusts are not public record, unlike probate). Useful for separate property and assets that don't fit into the community property agreement framework.
• Transfer on Death deed (RCW Chapter 64.80, effective 2014). A recorded deed that names one or more beneficiaries for real property. Revocable during the owner's lifetime. It must be recorded before the owner's death. No probate required for the property covered by the deed.
• Joint tenancy with right of survivorship. The deed must expressly state survivorship rights. For married couples, note that Washington is a community property state and joint tenancy may have different tax treatment than community property — a Washington estate attorney can advise on the right titling strategy.
• Beneficiary designations on financial accounts. POD and TOD designations on bank, brokerage, IRA, and 401(k) accounts allow assets to pass directly to named beneficiaries without probate.

Will Requirements in Washington

A valid Washington will must be in writing, signed by the testator, and witnessed by two or more competent witnesses who sign in the testator's presence (including electronic presence) or sign a witness affidavit (RCW 11.12.020). The testator must be at least 18 years old and of sound mind. No notarization is required for validity, though a self-proving affidavit before a notary simplifies admission to probate.

Washington does not recognize holographic wills made in Washington — an unwitnessed handwritten will is not valid here (RCW 11.12.020). A will signed in another state or country is accepted if it was valid under the law of the place where it was signed or of the testator's home state at the time.

Executor Compensation in Washington

Washington allows executors "such compensation for their services as the court shall deem just and reasonable" when the will does not set it (RCW 11.48.210). If the will provides for compensation, that amount controls unless the executor renounces it in writing before qualifying. There is no fixed statutory percentage; the size and complexity of the estate and the time spent matter.