10/08/2026
Your employer's 22% RSU withholding doesn't settle your tax bill.
At a 32% or 35% marginal rate, you've got more federal tax to cover.
If you're a government contractor receiving salary, bonuses and equity, you have several payroll pieces to track.
Employers often withhold 22% in federal income tax when your restricted stock units, or RSUs, vest.
You see taxes withheld and think you're covered.
I start with your full tax picture.
01. Estimate your federal income tax for the year using your salary, bonuses and expected RSU income.
Include your spouse's income if you're filing jointly.
02. Compare that estimate with what you'll pay through withholding and estimated tax payments.
That's how you figure out what's still owed before April.
03. Review your W-4, your employee withholding form, during the quarter you vest.
Ask payroll how to add enough withholding from your remaining paychecks to cover the projected shortfall.
For general education only. Consult your tax professional about your situation.