MasterTool

RSU Vest Tax Calculator

Calculate rsu vest tax from your own entered figures.

IRS supplemental wage withholding rule last updated · reference source

Loading calculator…

Currency: Amounts are calculated in the currency you select; this site does not convert between currencies and does not use live exchange rates.

Dated static reference; no live data is fetched. Verify current source values and assumptions before relying on results.

What this tool does

Calculate rsu vest tax from your own entered figures. 22% federal supplemental flat withholding method for qualifying supplemental wages up to $1 million; does not model the over-$1-million rule, payroll tax, capital gains, or alternative withholding methods.

How to use the RSU Vest Tax Calculator

  1. Enter or select vest value.
  2. Enter or select estimated actual federal tax rate (%).
  3. Enter or select estimated state tax rate (%).
  4. Enter or select state withholding rate (%).
  5. Read the calculated result; change any measurement to compare alternatives.

Formula

estimated federal tax=vest×actual federal rate; supplemental federal withholding=vest×22%; state tax/withholding use separate entered rates
vest
Vest value
federal
Estimated actual federal tax rate (%)
state
Estimated state tax rate (%)
stateWithheld
State withholding rate (%)

22% federal supplemental flat withholding method for qualifying supplemental wages up to $1 million; does not model the over-$1-million rule, payroll tax, capital gains, or alternative withholding methods.

Worked example

For rsu vest tax calculator, the following measurements illustrate the exact method: Vest value: 20000; Estimated actual federal tax rate (%): 32; Estimated state tax rate (%): 5; State withholding rate (%): 5.

Inputs

  • Vest value20000
  • Estimated actual federal tax rate (%)32
  • Estimated state tax rate (%)5
  • State withholding rate (%)5

Result

  • Estimated income tax$7,400.00
  • Federal supplemental withholding (22%)$4,400.00
  • Total entered withholding$5,400.00
  • Additional owed (negative = over-withheld)$2,000.00

Results explained

Estimated income tax
Estimated income tax from the formula above. 22% federal supplemental flat withholding method for qualifying supplemental wages up to $1 million; does not model the over-$1-million rule, payroll tax, capital gains, or alternative withholding methods.
Federal supplemental withholding (22%)
Federal supplemental withholding (22%) from the formula above. 22% federal supplemental flat withholding method for qualifying supplemental wages up to $1 million; does not model the over-$1-million rule, payroll tax, capital gains, or alternative withholding methods.
Total entered withholding
Total entered withholding from the formula above. 22% federal supplemental flat withholding method for qualifying supplemental wages up to $1 million; does not model the over-$1-million rule, payroll tax, capital gains, or alternative withholding methods.
Additional owed (negative = over-withheld)
Additional owed (negative = over-withheld) from the formula above. 22% federal supplemental flat withholding method for qualifying supplemental wages up to $1 million; does not model the over-$1-million rule, payroll tax, capital gains, or alternative withholding methods.

Frequently asked questions

estimated federal tax=vest×actual federal rate; supplemental federal withholding=vest×22%; state tax/withholding use separate entered rates

22% federal supplemental flat withholding method for qualifying supplemental wages up to $1 million; does not model the over-$1-million rule, payroll tax, capital gains, or alternative withholding methods.

No. All numbers are entered by you or come from the dated reference table shown on this page; calculations run locally.

This is an estimate, not financial, tax or legal advice. Verify the inputs and output with official sources and a qualified professional.

Check period consistency, currency, percentage inputs and the assumptions: 22% federal supplemental flat withholding method for qualifying supplemental wages up to $1 million; does not model the over-$1-million rule, payroll tax, capital gains, or alternative withholding methods.