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Kentucky Bonus Paycheck Calculator

A bonus paid in Kentucky is withheld at the flat 22% federal supplemental rate in 2026 (37% on amounts above $1 million), plus FICA of 7.65% and a flat 3.5% Kentucky income tax. That is roughly 33.2% withheld up front: withholding, not your final tax bill.

How are bonuses taxed in Kentucky?

In Kentucky, bonus withholding is typically 22% federal (the supplemental rate) plus 3.5% Kentucky income tax plus 7.65% FICA: about 33.2% up front. Withholding isn't your final tax: at filing time a bonus is ordinary income, so any over-withholding comes back as a refund. Against the 7 states Kentucky borders, the same a $10,000 bonus is worth $6,685 here: Tennessee keeps $350 more ($7,035), Ohio keeps $75 more ($6,760), Indiana keeps $55 more ($6,740), Missouri leaves $120 less ($6,565), West Virginia leaves $132 less ($6,553), Illinois leaves $145 less ($6,540) and Virginia leaves $225 less ($6,460). Indiana, Ohio and Tennessee are the only borders worth crossing for the tax alone.

Calculate your exact bonus take-home pay

Your bonus take-home

$3,343

from $5,000 bonusFor a $5,000 bonus · Kentucky · single

Take-home 67%Taxes 33%
Bonus amount$5,000
Federal tax−$1,100
State tax−$175
Social Security−$310
Medicare−$73
Net bonus$3,343

Estimate based on 2026 federal and Kentucky tax rules updated Oct 2026 How we calculate

Your details

Taxation method

Most common: a flat 22% federal rate is withheld on the bonus.

More options Base salary

What a bonus is actually worth in Kentucky

On top of a $75,000 salary in Kentucky, here is what each extra dollar survives federal tax, Kentucky income tax and FICA in 2026:

BonusGrossKentucky taxYou keepShare kept
$5,000 bonus$5,000$175$3,34366.8%
$10,000 bonus$10,000$350$6,68566.9%
$25,000 bonus$25,000$875$16,71366.9%

Kentucky takes about 3.5% of that money on top of the 22% federal marginal rate and 7.65% FICA.

How Kentucky ranks on bonuses

Across all 50 states and DC, Kentucky ranks 16th for what a $10,000 bonus leaves in 2026. That is $120 more than the median state ($6,565), and $668 more than California, where the same a $10,000 bonus leaves $6,017.

The best outcome anywhere is $7,035 in Alaska and the other states with no wage income tax, $350 more than Kentucky keeps.

Kentucky bonuses against the states next door

Crossing a state line changes what the same bonus is worth without changing what you are paid. Here is a $10,000 bonus in Kentucky against the states it borders:

StateState income taxYou keepvs Kentucky
Kentucky$350$6,685—
Illinois$495$6,540$145 less
Indiana$295$6,740$55 more
Missouri$470$6,565$120 less
Ohio$275$6,760$75 more
TennesseeNone$7,035$350 more
Virginia$575$6,460$225 less
West Virginia$482$6,553$132 less

Local income tax on bonuses in Kentucky

4 jurisdictions in Kentucky levy an income tax of their own on top of the state rate. The calculator above does not include them, so add this if you live or work in one:

JurisdictionResident rateCost on $85,000
Covington3.1497%$2,677
Lexington2.75%$2,338
Louisville2.20%$1,870
Bowling Green2.00%$1,700

How Kentucky bonus withholding works

Short answer: your employer withholds a flat 22% for federal income tax (the supplemental rate), plus 7.65% for Social Security and Medicare, plus Kentucky's flat 3.5% income tax: about 33.2% of a Kentucky bonus withheld up front. Bonuses aren't actually taxed at a higher rate, though: at tax time they're ordinary income, and any over-withholding comes back in your refund. Here's how each piece works.

  • Federal supplemental rate: Most employers withhold federal income tax from bonuses at a flat 22%, $2,200 on a $10,000 bonus, or 37% above $1 million a year, regardless of your regular bracket.
  • Kentucky flat tax: Kentucky taxes bonuses like all other wages at its flat 3.5% rate: there's no separate state bonus rate. Local income taxes in some Kentucky cities or counties are not included.
  • FICA taxes still apply: Social Security (6.2% up to the annual wage base) and Medicare (1.45%, plus 0.9% for high earners) come out of a bonus like any wage: $765 on $10,000.
  • Over-withholding is common: The flat 22% federal rate is often higher than your actual effective rate, and the difference comes back as a refund. In Kentucky the whole $10,000 nets $6,685 once state tax and FICA are in.

Your actual bonus tax depends on your total annual income, not the bonus alone: these figures assume a $75,000 Kentucky salary. Enter your own numbers above for an estimate that fits your situation.

Frequently Asked Questions

Typically about 33.2%: a flat 22% federal supplemental withholding, 3.5% Kentucky income tax, and 7.65% FICA. Your actual tax owed depends on your full-year income and may be lower: the difference comes back as a refund when you file.

The IRS requires employers to withhold federal income tax from supplemental wages (including bonuses) at a flat 22% rate for amounts up to $1 million, rising to 37% above that. Your employer may alternatively add the bonus to your regular paycheck and withhold using the aggregate method. Worked through for Kentucky: a $10,000 bonus keeps $6,685: 66.9% of it, after $350 of Kentucky income tax.

It depends on your total annual income and tax bracket. If the 22% flat withholding rate is higher than your actual effective rate on the bonus, you'll get the difference back as a refund; if you're in a higher bracket, you may owe more. On a $75,000 salary in Kentucky, a bonus is taxed at about 22% federally plus 3.5% to Kentucky, so the 22% flat rate is close to the mark at that income.

Yes: as regular income. Kentucky taxes all wage income, including bonuses, at its flat 3.5% rate; there is no separate state bonus rate. Local income taxes in some Kentucky cities or counties are not included.

Splitting a bonus across pay periods can reduce withholding if your employer uses the aggregate method, which annualizes your income, but it changes the timing, not the amount you ultimately owe. Where you live changes the amount: Kentucky ranks 16 of 51 on what a $10,000 bonus leaves, against $6,565 in the median state and $6,017 in California.

Against the 7 states Kentucky borders, the same a $10,000 bonus is worth $6,685 here: Tennessee keeps $350 more ($7,035), Ohio keeps $75 more ($6,760), Indiana keeps $55 more ($6,740), Missouri leaves $120 less ($6,565), West Virginia leaves $132 less ($6,553), Illinois leaves $145 less ($6,540) and Virginia leaves $225 less ($6,460). Indiana, Ohio and Tennessee are the only borders worth crossing for the tax alone.

Kentucky's flat 3.5% rate is higher than Pennsylvania (3.07%) but lower than Illinois (4.95%). What surprises people is that property taxes can vary significantly by county, creating unexpected cost differences that aren't reflected in the income tax rate. A homeowner in one county might pay $3,000 annually in property taxes, while a homeowner in another county might pay $6,000+ for a similar property, which can offset income tax advantages.

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