Question 1

Is a bonus taxed in Washington?

Accepted Answer

Not by the state. Washington has no income tax on wages, so there is no state withholding on a bonus. You still pay federal income tax (withheld at a flat 22% by most employers), 6.2% Social Security up to the $184,500 wage base and 1.45% Medicare. Washington payroll also deducts WA Paid Family & Medical Leave (employee share) and WA Cares Fund (long-term care) from wages, bonuses included.

Question 2

What rate does Washington withhold on bonuses?

Accepted Answer

Zero. Without a state income tax there is no state supplemental rate. The only income tax withheld from a Washington bonus is federal: 22% on supplemental wages up to $1 million in the year and 37% above that, unless your employer uses the aggregate method.

Question 3

Can I reduce the withholding on my Washington bonus?

Accepted Answer

The most direct way is a 401(k) deferral from the bonus, if your plan allows it: the deferred part is not subject to federal income tax withholding. When your employer uses the flat 22% federal rate, your Form W-4 does not change it; under the aggregate method it does. If you expect a large refund or bill, adjust your W-4 for the rest of the year rather than the bonus itself.

Question 4

Why was so much taken out of my bonus?

Accepted Answer

A bonus check usually loses 22% to federal income tax withholding, 7.65% to Social Security and Medicare, and your state's supplemental rate on top. That can add up to 30% to 40% of the bonus. The federal 22% and the state rate are withholding, not a separate bonus tax. When you file your return, the bonus is taxed as ordinary wages at your real bracket, and any over-withholding comes back as a refund.

Question 5

What is the federal bonus tax rate in 2026?

Accepted Answer

There is no separate federal bonus tax. For withholding, IRS Publication 15 (2026) lets employers withhold a flat 22% on supplemental wages such as bonuses and commissions, or add the bonus to a regular paycheck and use the normal tables (the aggregate method). Supplemental wages above $1 million in a calendar year must be withheld at 37%. Social Security (6.2% up to the $184,500 wage base) and Medicare (1.45%, plus 0.9% on wages above $200,000) apply as well.

Question 6

Does putting my bonus in a 401(k) lower the tax?

Accepted Answer

Yes, if your plan allows deferrals from bonuses. A traditional 401(k) deferral is not subject to federal income tax withholding, so the 22% applies only to the part you take as cash. Social Security and Medicare still apply to the full bonus. The 2026 employee deferral limit is $24,500 across all your paychecks, including any deferrals you already made this year.

Withheld	Flat rate	Aggregate
Federal income tax	$2,200	$2,812
WA income tax	$0	$0
Net bonus	$6,896	$6,285

State	2026 bonus withholding	Calculator
Washington	No state income tax	This page
Idaho	Flat 5.3% (optional)	Idaho bonus tax
Oregon	Flat 8% (optional)	Oregon bonus tax

Washington Bonus Tax Calculator 2026

Withholding Breakdown

Flat Rate vs Aggregate Method

How Washington Withholds Tax on Bonuses in 2026

Is a Bonus Taxed Higher in Washington?

Bonus Withholding in States Near Washington

Washington Bonus Tax FAQ

More Pay Tools for Washington

Bonus Tax Calculators for Other States

Official References

Let Jupid handle the books and taxes for you

Know Where Every Dollar Goes