Commission income is remuneration earned for bringing about a sale or a transaction, measured by output rather than by the time spent. The Internal Revenue Code uses that same contrast when it defines its commission based categories, describing remuneration as directly related to sales or other output, including the performance of services, rather than to the number of hours worked (26 U.S.C. 3508(b)).
The word commission tells you how the pay was calculated. It does not tell you how the pay is taxed. That answer comes from the relationship between the two parties, and the same dollar can be wages subject to withholding or nonemployee compensation reported on an information return, depending only on who earned it and from whom.
The Label Does Not Decide Whether It Is Wages
Start from the definition of wages, because commissions are named inside it.
The term wages means all remuneration for services performed by an employee for his employer unless specifically excepted under section 3401(a) or excepted under section 3402(e) (26 CFR 31.3401(a)-1(a)(1)-1)). The name by which the remuneration for services is designated is immaterial, so salaries, fees, bonuses, commissions on sales or on insurance premiums, pensions, and retired pay are wages within the meaning of the statute if paid as compensation for services performed by the employee for his employer (26 CFR 31.3401(a)-1(a)(2)-1)).
Two further paragraphs close the usual escape routes.
The basis upon which the remuneration is paid is immaterial in determining whether the remuneration constitutes wages, so it may be paid on the basis of piecework or a percentage of profits, and may be paid hourly, daily, weekly, monthly or annually (26 CFR 31.3401(a)-1(a)(3)-1)). Generally the medium in which remuneration is paid is also immaterial, and where services are paid for in a medium other than cash, the fair market value of the thing taken in payment is the amount to be included as wages (26 CFR 31.3401(a)-1(a)(4)-1)).
A trailing commission does not escape either. Remuneration for services, unless specifically excepted by the statute, constitutes wages even though at the time it is paid the relationship of employer and employee no longer exists between the person in whose employ the services were performed and the individual who performed them (26 CFR 31.3401(a)-1(a)(5)-1)). A commission that settles after a salesperson leaves is still wages, and what wages take in generally is set out in gross wages.
Withholding When the Commission Is Wages
Commissions are wages of a particular kind, and that kind has its own withholding rules.
Supplemental wages are wage payments to an employee that are not regular wages, and they include, but are not limited to, bonuses, commissions, overtime pay, payments for accumulated sick leave, severance pay, awards, prizes, back pay, reported tips, retroactive pay increases and payments for nondeductible moving expenses (IRS, Publication 15). Two items on that list are optional: employers have the option to treat overtime pay and tips as regular wages instead of supplemental wages (IRS, Publication 15). Commissions carry no such option.
How the withholding is figured then runs through a sequence of tests, and the order matters.
First, the Million Dollar Test
Special rules apply to the extent supplemental wages paid to any one employee during the calendar year exceed $1 million. Where a supplemental wage payment, together with other supplemental wage payments made to that employee during the calendar year, exceeds $1 million, the excess is subject to withholding at 37 percent, or the highest rate of income tax for the year, and that rate is applied without regard to the employee’s Form W-4. In determining supplemental wages paid to the employee during the year, payments from all businesses under common control are included (IRS, Publication 15).
Then, Whether the Payment Was Identified Separately
Below that threshold the first question is presentation. If you pay supplemental wages with regular wages but do not specify the amount of each, withhold federal income tax as if the total were a single payment for a regular payroll period (IRS, Publication 15).
Where the supplemental wages are paid separately, or combined in a single payment with the amount of each specified, the method depends partly on whether income tax was withheld from the employee’s regular wages. If you withheld income tax from an employee’s regular wages in the current or immediately preceding calendar year, you can withhold a flat 22 percent, and no other percentage is allowed, or you can use the aggregate method, adding the supplemental wages to concurrently paid regular wages, figuring the tax on the total as a single payment for a regular payroll period, and subtracting the tax already withheld or to be withheld from the regular wages. Where there are no concurrently paid regular wages, the supplemental wages are added instead to either the regular wages paid or to be paid for the current payroll period or the regular wages paid for the preceding payroll period (IRS, Publication 15).
If you did not withhold income tax from the employee’s regular wages in the current or immediately preceding calendar year, the flat rate option is not available and the aggregate method is the one to use (IRS, Publication 15).
The Part That Does Not Change
Whichever method is used, regardless of the method you use to withhold income tax on supplemental wages, they are subject to social security, Medicare and FUTA taxes (IRS, Publication 15). Those three are set out in payroll tax, and the flat 22 percent belongs to the publication’s question of the amount of income tax to be withheld, which is not the same question as the rate at which the income is finally taxed.
When the Commission Is Not Wages
Where the earner is not an employee, the same payment travels on an information return instead.
Nonemployee compensation is entered in box 1a of Form 1099-NEC, and it includes fees, commissions, prizes and awards for services performed as a nonemployee, and other forms of compensation for services performed for your trade or business by an individual who is not your employee (IRS, Instructions for Forms 1099-MISC and 1099-NEC, 12/2026).
The reporting duty turns on four conditions that must all be met: you made the payment to someone who is not your employee; you made the payment for services in the course of your trade or business, including government agencies and nonprofit organizations; you made the payment to an individual, partnership, estate, or in some cases a corporation; and you made payments to the payee of at least $2,000 during the year (IRS, Instructions for Forms 1099-MISC and 1099-NEC, 12/2026).
Advances and chargebacks get a rule of their own. The examples of payments reportable in box 1a include commissions paid to nonemployee salespersons that are subject to repayment but not repaid during the calendar year (IRS, Instructions for Forms 1099-MISC and 1099-NEC, 12/2026). So a draw against future commissions that the salesperson has not repaid within the calendar year is reportable, rather than held open because it might reverse later.
Amounts paid to individuals that are reportable in box 1a are generally subject to self-employment tax (IRS, Instructions for Forms 1099-MISC and 1099-NEC, 12/2026). Which of the two forms carries which payment type is worked through in the two nonemployee information returns.
Two Commission Categories the Statute Names
Some commission earners are placed by statute rather than by the control test, and both of the named categories are commission based.
One of them is the agent-driver or commission-driver. For purposes of the Federal Insurance Contributions Act chapter, employee means, among others, any individual, other than an individual who is already an employee as a corporate officer or under the usual common law rules, who performs services for remuneration for any person as an agent-driver or commission-driver engaged in distributing meat products, vegetable products, fruit products, bakery products, beverages other than milk, or laundry or dry-cleaning services, for his principal (26 U.S.C. 3121(d)(3)(A)). The conditions that sit on top of that list, and the reporting it produces, are set out in statutory employee.
A licensed real estate agent or a direct seller runs the other way, treated as self-employed by statute where substantially all of the remuneration is directly related to sales or other output rather than to the number of hours worked, and the services run under a written contract providing that the person will not be treated as an employee for Federal tax purposes (26 U.S.C. 3508(b)). The full test, including the licence condition and the routes into direct seller status, is set out in statutory nonemployee.
Where neither statute reaches, the ordinary control test decides, and it is set out in independent contractor.
On the Earner’s Own Books
To the business that earns it, commission income is revenue for a service performed rather than for goods sold, so it sits with the other service lines covered in service revenue, and the question of which period it belongs in is the ordinary one answered by the revenue recognition principle.
The timing question is sharper here than for most revenue, because a commission is usually contingent on a transaction closing, and the regulation quoted above already shows that the tax side is willing to treat a payment made after the working relationship ended as compensation for the earlier service (26 CFR 31.3401(a)-1(a)(5)-1)).
Common Questions
No. What differs is the withholding, not the tax. A flat 22 percent, or 37 percent above the million dollar threshold, is a rate at which income tax is withheld from a supplemental wage payment (IRS, Publication 15). The publication is answering how much to withhold at the moment of payment, and it does not set the rate at which the income is taxed.
On Form W-2 where the earner is an employee, because commissions on sales are wages if paid as compensation for services performed by the employee for his employer (26 CFR 31.3401(a)-1(a)(2)-1)). On Form 1099-NEC where the earner is not an employee and the four reporting conditions are met (IRS, Instructions for Forms 1099-MISC and 1099-NEC, 12/2026). The classification comes first and the form follows it, never the other way around.
Yes, where the commission is wages. Regardless of the method used to withhold income tax on supplemental wages, they are subject to social security, Medicare and FUTA taxes (IRS, Publication 15). Where the commission is nonemployee compensation instead, the earner generally carries the equivalent charge as self-employment tax (IRS, Instructions for Forms 1099-MISC and 1099-NEC, 12/2026).
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