RSU vest tax calculator

Enter the vest and your YTD wages. We run the actual 2026 federal and state brackets (post-OBBBA) — not a flat estimate. Your employer will withhold 22% federal on supplemental income, so if your marginal rate is higher, you'll owe the difference at filing.

Gross value of vest

$15,000

Federal income tax (marginal)

Marginal rate 24%

$3,600
State income tax
$1,395
Medicare (+ addl)
$353
Social Security

Capped at the SS wage base

$0
Net after actual tax owed
$9,653
Employer supplemental withholding

Flat federal withholding applied at vest

$3,300
Shortfall vs. withheld
$300 owed at filing

Informational only. Not financial or tax advice. 2026 brackets. California, New York, and Colorado supported (plus no-wage-tax states). Other states supported in the paid product.