Washington State Tax Guide
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Washington State Tax Guide
Washington does not levy a state personal income tax. Federal deadlines apply.
Extension rules
Extension type: Automatic — no action required
No state personal income tax return required in Washington. Federal extension rules apply for your IRS return.
Washington Key deadlines (tax year 2025, return filed in 2026)
- Filing deadline: Apr 15, 2026
- Extension request deadline: Apr 15, 2026
- Extended return deadline: Oct 15, 2026
- Payment deadline: Apr 15, 2026
Estimated payments
Washington has no personal income tax but imposes a 7% capital gains tax on gains above the annual threshold.
Payment rules
Washington does not collect personal income tax on wages, so there is no state balance to pay. Federal payments go to the IRS.
Payment options
Washington Refund Tracking
Processing time: Federal IRS timelines apply
Do I need to file?
Washington has no personal income tax on wages, so no state income tax return is required for wage income.
- Residents: No individual state income tax filing required.
- Part-year residents: Not applicable — Washington has no personal income tax.
- Nonresidents: Not applicable — Washington has no personal income tax.
Official filing requirements — Washington Department of Revenue
Thresholds change annually. Confirm your situation against current Washington Department of Revenue guidance.
Filing methods
- No state income tax return required — file your federal return only
