
Supplemental Wages in 2026: A Small Employer's Guide to 22% Withholding on Bonuses, Commissions, and Overtime
For 2026, the federal flat withholding rate on separately identified supplemental wages is 22%, with a mandatory 37% rate on amounts over $1 million. Learn when small employers may use the flat method versus the aggregate method for bonuses, commissions, and overtime, why Social Security, Medicare, and FUTA still apply, how deposit timing and Form 941 fit in, and how to track W-2 box 12 code TT for qualified overtime.










