Commission is not taxed higher than salary. The IRS treats both as ordinary earned income, and they run through the same federal tax brackets. What throws people off is withholding: employers usually take a flat 22% out of a commission check up front, so the money that lands in your account looks like it was hit with a heavier tax. Your actual tax rate is settled when you file, not when the check is cut.
Why the Commission Check Looks Smaller
The IRS classifies commissions as “supplemental wages,” the same bucket that holds bonuses, overtime, and severance. The label changes how your employer withholds, not how much tax you ultimately owe.
When commission is paid separately from your regular paycheck, or identified as a separate amount within a combined payment, the employer picks between two methods. The flat percentage method withholds 22% for federal income tax on the commission portion, no matter what your W-4 says or which bracket you’re actually in. The aggregate method adds the commission to your regular wages for that pay period and calculates withholding on the combined total as if you earned that amount every period, which usually lands you in a higher withholding bracket for that check.
Both are estimates. The flat 22% is what most payroll systems default to, and it’s the single biggest reason commission feels like it’s taxed differently. If your true effective rate is 14%, you’re overpaying for now. If it’s 32%, you’re underpaying.
One narrow exception: if your supplemental wages cross $1 million in a calendar year, everything above that threshold must be withheld at 37%, which matches the top federal rate. The employer applies that regardless of your W-4.1Internal Revenue Service. Publication 15 (2026), (Circular E), Employers Tax Guide
State income tax adds its own supplemental withholding rate on top in most states with an income tax, commonly somewhere between about 5% and 12%. That’s why a quarter to a third of a commission check can vanish before it hits your bank.
What You Actually Owe
Federal income tax is progressive. Your commission doesn’t sit in its own 22% bucket. It stacks on top of your salary and gets taxed at whatever bracket that additional income falls into. For 2026, the federal brackets for single filers are:
- 10% up to $12,400
- 12% from $12,401 to $50,400
- 22% from $50,401 to $105,700
- 24% from $105,701 to $201,775
- 32% from $201,776 to $256,225
- 35% from $256,226 to $640,600
- 37% on $640,601 and above
If your total taxable income lands in the 22% bracket, the flat withholding was roughly right. If you stay in the 12% bracket, you overpaid all year and a refund is coming. If commissions push you into 24% or higher, too little was withheld and you’ll owe in April. The 22% figure is a one-size-fits-most guess, not a rate tailored to you.
Payroll Taxes Work the Same on Both
Commission income is subject to the same payroll taxes as salary. You pay 6.2% for Social Security on earnings up to the 2026 wage base of $184,500, and your employer pays a matching 6.2%.2SSA.gov. 2026 Cost-of-Living Adjustment (COLA) Fact Sheet Once your combined wages cross that cap, Social Security tax stops for the rest of the year. That’s why a late-year commission check sometimes feels lighter on tax than an identical one earlier in the year.
Medicare is 1.45% with no cap, matched by your employer. If your wages from a single employer cross $200,000, an extra 0.9% Additional Medicare Tax begins to be withheld automatically, regardless of your filing status. The actual liability threshold is $200,000 for single filers and $250,000 for married filing jointly, reconciled when you file.3Internal Revenue Service. Questions and Answers for the Additional Medicare Tax Your employer does not match the extra 0.9%.
A dollar of commission and a dollar of salary cost exactly the same in payroll tax.
If You’re Paid on a 1099 Instead of a W-2
The comparison changes if you earn commission as an independent contractor. The income itself is still ordinary income at the same brackets, but you cover both halves of Social Security and Medicare yourself. That’s 15.3% in self-employment tax, against the 7.65% a W-2 employee pays.4GovInfo. 26 USC 1401 – Rate of Tax You can deduct half of your self-employment tax when figuring adjusted gross income, which softens the hit.5Internal Revenue Service. Topic No. 554, Self-Employment Tax
The overall tax burden on 1099 commission is genuinely higher than on W-2 commission, but not because commissions are taxed at a different rate. You’re paying the employer’s share of payroll tax on top of your own. And because nothing is withheld from a 1099 payment, quarterly estimated payments usually replace the withholding you’d otherwise get from an employer.
Fixing the Withholding Gap
If commission income regularly pushes you above what the 22% flat withholding covers and you owe every April, the fix is straightforward. Submit an updated Form W-4 and use line 4(c) to request extra withholding per pay period.6Internal Revenue Service. Tax Withholding An extra $50 or $100 a check often closes the gap.
If your commissions are uneven, with big months and empty ones, quarterly estimated payments are usually the better tool. The 2026 deadlines fall on April 15, June 15, September 15, and January 15 of the following year.7Internal Revenue Service. Individuals 2 Pay in the quarter the money arrives instead of over-withholding all year.
Avoiding an Underpayment Penalty
The IRS charges an underpayment penalty if you owe more than $1,000 at filing time and you haven’t hit one of the safe harbors. You’re covered if you pay at least 90% of the current year’s total tax through withholding and estimated payments, or 100% of last year’s total tax, whichever is less. If your prior-year adjusted gross income was above $150,000 ($75,000 if married filing separately), the prior-year safe harbor rises to 110%.8Internal Revenue Service. Underpayment of Estimated Tax by Individuals Penalty
The prior-year safe harbor is useful when commissions are unpredictable, because it gives you a fixed number to hit. Even if this year blows past expectations, you’ll still owe the difference in April, but without the penalty on top.
Lowering the Bill on Commission Dollars
Because commission stacks on top of salary, each additional dollar is taxed at your highest marginal rate. That makes pre-tax retirement contributions one of the most direct ways to bring the total down. For 2026, you can put up to $24,500 into a 401(k), 403(b), or similar plan. Age 50 and up adds an $8,000 catch-up, bringing the ceiling to $32,500. Workers aged 60 through 63 qualify for a larger catch-up of $11,250, for a total of $35,750.9Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026, IRA Limit Increases to $7,500
Every dollar into a traditional 401(k) reduces taxable income by a dollar. If commissions would otherwise nudge you from the 22% into the 24% bracket, contributing enough may keep you out of it. Some employer plans allow a separate contribution percentage for commission checks, which is a practical way to shelter more of the variable income without changing what comes out of your regular paychecks.