Employee and employer Social Security tax applies to taxable overtime wages until the annual Social Security wage base is reached.
Overtime payroll taxes
Does the overtime deduction reduce FICA?
No. The qualified overtime deduction is an income-tax deduction claimed by an eligible individual. It does not remove the overtime wages from Social Security or Medicare taxation.
Payroll tax treatment depends on the worker and wage type. This guide covers the general federal employee and employer FICA treatment described by the IRS, not a payroll-return correction calculation.
Medicare tax has no wage base. Additional Medicare withholding may apply after the withholding threshold.
An employer uses a valid updated Form W-4 if an employee chooses to account for an expected deduction during the year.
A $20 hourly example
An employee works 40 regular hours and 10 overtime hours at a $20 regular rate. Weekly gross pay is $1,100: $800 for the first 40 hours and $300 for the overtime hours. The potentially qualified premium is $100, but payroll taxes are calculated under the normal wage rules on the taxable wages, not only on the premium.
Income deduction vs. payroll tax
The deduction reduces income subject to federal income tax on the return, subject to eligibility, the cap, and phaseout. It does not retroactively make the overtime wages exempt from FICA.
Year-to-date wages still matter
For 2026, the employee Social Security rate is 6.2% up to the $184,500 wage base. Medicare generally continues at 1.45%, with 0.9% Additional Medicare withholding after an employer pays more than $200,000 in wages during the year.
Form W-4 is optional
The employer does not simply exclude qualified overtime from withholding. An employee expecting the deduction can review Form W-4 Step 4(b) and the IRS Tax Withholding Estimator, then submit a valid updated W-4 if appropriate.
A smaller refund or a larger paycheck is not proof that the deduction was computed correctly. Reconcile the year-end reported qualified amount, total wages, withholding, and return-level limits separately.
Sources: IRS Publication 15 (2026), IRS FS-2026-13, IRS Publication 505 (2026), and SSA contribution and benefit base. Last reviewed 2026-08-16.