Wisconsin Bonus Tax Calculator

See how much of your bonus you keep in Wisconsin after federal, state and payroll taxes, and whether you'll get some back when you file.

Bonus amount

Before tax

State

Yearly salary

Without the bonus

More options· Single

Filing status

For the tax you’ll owe when you file

Pay so far this year

Before the bonus, for Social Security

Other bonuses this year

Over $1 million, 37% applies

Your bonus after tax

$3,253

$1,748 withheld, 34.95% of your bonus

Federal tax (22%): $1,100
State & local: $265

You keep$3,253
Federal income tax$1,100
Social Security & Medicare$383
State & local$265

What this means

Bonuses aren’t taxed more than other pay. The flat 22% is only withholding, a prepayment: your real tax is worked out on your return, where the bonus is taxed like the rest of your pay.

The 22% withheld is about right: the bonus adds roughly $1,100 to your federal tax for the year.

Next step

Breakdown

	Per year
Bonus	$5,000.00
Federal income tax	-$1,100.00
Social Security	-$310.00
Medicare	-$72.50
Wisconsin income tax	-$265.00
You keep	$3,252.50

How your bonus is taxed

Federal: a flat 22% when your employer pays the bonus separately (37% on bonuses over $1 million in a year).
Social Security and Medicare: 7.65%, the same as your regular pay.
Wisconsin: Wisconsin withholds 5.3% from bonuses.
When you file: the bonus is taxed at your normal rates with the rest of your income, so withholding is only a down payment.

Assumptions in this estimate

Assumes your employer pays the bonus separately and uses the 22% federal flat rate. Some employers add it to a regular paycheck and withhold as if you earned that much every pay period, which can take more or less.
Withholding isn’t your final tax. When you file, the bonus is taxed at your normal rates with the rest of your income, so you may get some back or owe more.
The tax you’ll really owe assumes the standard deduction and no other income or credits.

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Wisconsin bonus tax at a glance

Wisconsin withholds a flat rate from bonuses that depends on your yearly pay, from 3.54% to 7.65%, or employers can use the regular tables.

Every bonus in Wisconsin also has federal income tax (22% when paid separately), Social Security (6.2%) and Medicare (1.45%) withheld. Use the calculator above to see the exact amounts for your bonus.

Source: Wisconsin DOR: Publication W-166 (January 2026)

Notes for Wisconsin

Wisconsin’s flat bonus rate depends on your estimated yearly pay.