How Do I File Taxes for a Deceased Person in Washington?

Find out which tax returns you need to file after someone dies. See state-specific forms, deadlines, and whether tax clearance is required.

Frequently Asked Questions

Because Washington has no state income tax, the primary filing is the federal final income tax return (Form 1040) for income earned through the date of death. If the estate earns income during administration, a federal fiduciary return (Form 1041) may be required. No state income tax returns are needed.

The final federal income tax return is due April 15 of the year following death. Estate income tax returns (Form 1041) are due by the 15th day of the fourth month after the estate's tax year ends.

Yes. Washington estate tax creates a lien on all property subject to the tax from date of death (RCW 83.100.080). The Department of Revenue issues a Release of Lien once estate tax has been paid in full — this release frees all property from the state's claim. Request the release through My DOR at secure.dor.wa.gov/home or by contacting the estate tax unit at estates@dor.wa.gov / (360) 704-5906. For estates below the filing threshold, DOR may issue a "no-tax-due" determination upon request. Distributing assets without clearance may create personal liability for the executor or trustee.

Yes. Washington imposes a state estate tax on estates exceeding $$3,076,000. This is separate from the federal estate tax. Estates above the state threshold must file a state estate tax return even if no federal estate tax is owed. See the full breakdown with the Washington death tax calculator.

Yes. Estate size does not affect the requirement to file a final income tax return. A final Form 1040 is required regardless of estate value if the deceased had income. What smaller estates typically avoid is the federal estate tax return (Form 706) and the Washington estate tax return (for estates over $$3,076,000).

The executor named in the will (or the court-appointed administrator) is responsible for filing the final income tax return and any estate tax returns. If the deceased was married, the surviving spouse can file a joint federal return for the year of death. For trust assets, the successor trustee handles fiduciary tax returns. The Washington executor checklist covers all filing responsibilities in order.

Tax Filing After Death in Washington

Because Washington does not impose a state income tax, the tax filing process after death is more straightforward than in most states. Only federal returns are required for the deceased's income.

Washington imposes a state estate tax on estates exceeding $3,076,000. This threshold is separate from the federal exemption, so some estates owe state tax even when no federal tax is due. The Washington death tax calculator estimates the combined liability.

Missing tax deadlines can result in penalties and interest that reduce the estate's value. The executor checklist for Washington includes all filing dates so nothing is overlooked.

SimplyTrust Editorial·Updated May 27, 2026

Legal Sources

RCW 83.100.020, 83.100.040; SB 5813 (Ch. 421, 2025 Laws); ESB 6347 (Ch. 209, 2026 Laws)

Data sourced from Washington statutes and official state code. How we research.

Washington Estate Planning Resources

In-depth guides covering Washington probate laws, trust requirements, and estate planning strategies.

How Do I File Taxes for a Deceased Person in Washington?

Find out which tax returns you need to file after someone dies. See state-specific forms, deadlines, and whether tax clearance is required.

State

Approximate Estate Value

Estate earns income

Interest, dividends, rent, or other income received after date of death

Washington Tax Filing Checklist

1 filing required

0 of 1 completed0%

Tax Clearance Required Before Distribution

Washington estate tax creates a lien on all property subject to the tax from date of death (RCW 83.100.080). The Department of Revenue issues a Release of Lien once estate tax has been paid in full — this release frees all property from the state's claim. Request the release through My DOR at secure.dor.wa.gov/home or by contacting the estate tax unit at estates@dor.wa.gov / (360) 704-5906. For estates below the filing threshold, DOR may issue a "no-tax-due" determination upon request.

More Information

Federal

File final income tax return

A final federal income tax return is required for income earned from January 1 through the date of death.

Form: IRS Form 1040

Deadline: April 15 following year of death

Write "DECEASED" across the top. If filing jointly with surviving spouse, include both incomes. Attach Form 1310 if claiming a refund.

Download Form File Online

File estate income tax returnNot required

IRS Form 1041 is only required if the estate earns $600 in gross income or more during administration.

File estate tax returnNot required

The estate value ($0) is below the federal exemption of $15,000,000. IRS Form 706 is generally not required.

Washington

Final income tax returnNot required

Washington has no state income tax. No state income tax return is required.

File estate tax returnNot required

The estate value ($0) is below Washington's exemption of $3,076,000.

This tool provides general information about tax filing requirements after death. Tax situations vary based on individual circumstances. Consult a licensed tax professional or CPA for advice specific to your situation.

Frequently Asked Questions

The final federal income tax return is due April 15 of the year following death. Estate income tax returns (Form 1041) are due by the 15th day of the fourth month after the estate's tax year ends.

Tax Filing After Death in Washington

Because Washington does not impose a state income tax, the tax filing process after death is more straightforward than in most states. Only federal returns are required for the deceased's income.

Missing tax deadlines can result in penalties and interest that reduce the estate's value. The executor checklist for Washington includes all filing dates so nothing is overlooked.

SimplyTrust Editorial·Updated May 27, 2026

Legal Sources

RCW 83.100.020, 83.100.040; SB 5813 (Ch. 421, 2025 Laws); ESB 6347 (Ch. 209, 2026 Laws)

Data sourced from Washington statutes and official state code. How we research.

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