Bonuses paid in Indiana are typically withheld at a combined rate of about 32% to 35%. That breaks down to a flat 22% for federal income tax, 2.95% for Indiana state income tax, a county income tax between 0.5% and 3% depending on where you live, plus 6.2% for Social Security and 1.45% for Medicare. How much are bonuses taxed in Indiana in your specific case comes down to three things: your county of residence, your total earnings for the year, and whether your employer uses the flat-rate or aggregate federal withholding method.
Federal Withholding on Your Bonus
The IRS treats bonuses as supplemental wages, and employers choose between two methods to withhold federal income tax.
The percentage method is the more common one. Your employer applies a flat 22% to the bonus, no matter your tax bracket, filing status, or W-4 elections, as long as your total supplemental wages for the year stay at or below $1 million.1Internal Revenue Service. Publication 15 (2026), (Circular E), Employer’s Tax Guide On a $5,000 bonus, that’s $1,100 in federal withholding.
The aggregate method works differently. Your employer adds the bonus to your most recent regular paycheck, calculates withholding on the combined amount using the standard graduated brackets, and then subtracts what was already withheld from your regular pay. Because the combined figure is larger, this method often pulls a higher amount than the flat 22%.
If your supplemental wages for the calendar year cross $1 million, the portion above that threshold is withheld at 37%.1Internal Revenue Service. Publication 15 (2026), (Circular E), Employer’s Tax Guide Most workers never hit that ceiling.
Indiana State Income Tax
Indiana uses a single flat rate on all income, including bonuses. For 2026, that rate is 2.95%.2Indiana Department of Revenue. How to Compute Withholding for State and County Income Tax Your employer withholds 2.95% from your gross bonus. On a $5,000 bonus, state withholding is $147.50.
Because the rate is flat, there is no bracket creep. A bonus is taxed at the same state rate as your regular wages.3Indiana General Assembly. Indiana Code 6-3-2-1 – Imposition of Tax, Tax Rate, Calculation and Certification of Individual Adjusted Gross Income Tax Rate
County Income Tax Is the Biggest Variable
Every Indiana county levies its own income tax on top of the state rate, and your rate is set by where your primary home was located on January 1 of the tax year.4Indiana Department of Revenue. Income Tax Information Bulletin #32 – General Information on Local Income Taxes If you move mid-year, your rate stays locked to your January 1 address. Nonresidents who work in Indiana pay the county tax based on the county where they earn most of their income.
For 2026, county rates run from 0.5% in Porter County to 3.0% in Randolph County.2Indiana Department of Revenue. How to Compute Withholding for State and County Income Tax Two coworkers receiving the same $5,000 bonus could see anywhere from $25 to $150 withheld for county tax. Rates for some of the more populated counties in 2026:
- Marion County (Indianapolis): 2.02%
- Allen County (Fort Wayne): 1.59%
- St. Joseph County (South Bend): 1.75%
- Lake County (Gary, Hammond): 1.5%
- Hamilton County (Carmel, Fishers): 1.1%
The full list is published annually by the Indiana Department of Revenue in Departmental Notice #1.2Indiana Department of Revenue. How to Compute Withholding for State and County Income Tax
Social Security and Medicare
FICA taxes apply to bonuses the same way they apply to regular pay. Your employer withholds 6.2% for Social Security and 1.45% for Medicare from the gross bonus.5Internal Revenue Service. Topic No. 751, Social Security and Medicare Withholding Rates On a $5,000 bonus, that’s $310 and $72.50.
Social Security withholding stops once your total wages for the year hit the wage base limit, which is $184,500 for 2026.6Social Security Administration. 2026 Cost-of-Living Adjustment (COLA) Fact Sheet Medicare has no cap.
If your wages cross $200,000 in a calendar year, your employer starts withholding an extra 0.9% Medicare tax on the amount above that threshold, regardless of your filing status.7Internal Revenue Service. Topic No. 560, Additional Medicare Tax Married couples filing jointly owe the extra 0.9% on combined wages above $250,000, so if you and your spouse each earn under $200,000 but together exceed $250,000, you settle up on your return.
What a $5,000 Bonus Actually Looks Like
Here’s the math for a Marion County resident receiving a $5,000 bonus, assuming the employer uses the flat 22% federal method and the employee has not hit the Social Security wage base:
- Federal income tax (22%): $1,100
- Indiana state tax (2.95%): $147.50
- Marion County tax (2.02%): $101
- Social Security (6.2%): $310
- Medicare (1.45%): $72.50
- Total withheld: $1,731
- Take-home: $3,269
That’s about 34.6% withheld. Move the same employee to Porter County and the county piece drops to $25, pushing take-home to $3,345. Outside of the federal 22%, your county rate is the single biggest lever.
Gift Cards and Other Non-Cash Bonuses
A bonus paid as a gift card, vacation, electronics, or other property is still taxable. The fair market value counts as wages, and your employer should withhold income and payroll taxes on it, usually by adding the value to your paycheck.8eCFR. 26 CFR 1.74-1 – Prizes and Awards
Gift cards get their own rule. The IRS treats them as cash equivalents, which means they are always taxable compensation and never qualify as a tax-free fringe benefit, no matter how small.9Internal Revenue Service. Employer’s Tax Guide to Fringe Benefits A $25 gift card is taxed like $25 cash. A low-value non-cash gift, like a holiday ham or a company-branded item, may qualify as a tax-free de minimis fringe benefit, but anything with meaningful monetary value gets taxed.
Withholding Isn’t Your Final Tax Bill
The amounts pulled from your bonus are prepayments, not your actual liability. Your bonus shows up in Box 1 of your W-2 with the rest of your wages, and total federal withholding for the year appears in Box 2.10Internal Revenue Service. 2026 General Instructions for Forms W-2 and W-3 At tax time, the IRS calculates what you actually owe based on your total income, filing status, deductions, and credits, then compares that to what was withheld.
The 22% flat federal rate is not your tax rate. If your total taxable income falls in the 12% bracket, you were overwithheld and get the difference back as a refund. If it lands in the 24% bracket or higher, you may owe a bit more. Indiana state and county taxes tend to line up more closely with the flat-rate withholding since both use flat rates, but deductions and credits on your Indiana return can still shift the final number.
If the aggregate method left you with more federal tax withheld than the flat 22% would have, that money is not gone. It either reduces what you owe or increases your refund when you file your federal Form 1040 and Indiana Form IT-40 for the year you received the bonus.