What is supplemental pay, and how is it taxed differently from regular wages?

Administrator

Administrator
Staff member
Our payroll team is setting up a bonus run and wants to make sure supplemental pay is handled correctly. Supplemental pay includes wages paid outside of regular salary — things like bonuses, commissions, overtime, and severance. The IRS allows employers to withhold federal income tax on supplemental wages at a flat 22% rate, rather than using the standard withholding method. Does your team use the flat rate or aggregate method, and has that caused any issues for employees at tax time?
 
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