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 approximately $3.1 million (2026) 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. The executor must also give direct notice to all reasonably known creditors. The 4-month creditor period begins from the date of first publication. All known creditors should receive notice within 30 days of appointment.
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 — unlike some states, Washington does not automatically grant payment extensions even when filing is extended.
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 2026 exemption is approximately $3.193 million, adjusted annually for inflation.

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.

• 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 total gross value of the probate estate is $100,000 or less (RCW 11.62.010), heirs can collect assets from banks, brokerages, and the DMV 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 entitled to the asset under the will or intestacy. Wait 40 days from the date of death before using the affidavit.

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 deceased's half of community property passes entirely to the surviving spouse if all surviving descendants are also descendants of the surviving spouse. If any descendants are not of the surviving spouse, the deceased's half passes to all of the deceased's descendants (not to the surviving spouse).

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 65.04.270, effective 2014). A recorded deed that names one or more beneficiaries for real property. Revocable during the owner's lifetime. At death, the beneficiary records an affidavit confirming the transfer. 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 competent witnesses who sign in the testator's presence (RCW 11.12.020). The testator must be at least 18 years old (or legally emancipated). No notarization is required for validity, though a self-proving affidavit before a notary simplifies admission to probate.

Washington recognizes holographic wills — entirely handwritten and signed by the testator, with no witnesses needed (RCW 11.12.020). As with all holographic wills, the risk of challenge is higher and the procedure for admission is more complex than for an attested will.

Executor Compensation in Washington

Washington allows executors "reasonable compensation" for their services (RCW 11.48.210). There is no fixed statutory rate — courts consider the size and complexity of the estate, time spent, and whether the result was favorable for the beneficiaries. In practice, most Washington executors receive 2–4% of the estate's gross value. Compensation must be approved by the court or agreed upon by all interested persons.