RSU wealth sits in one employer and vests on a calendar. Check withholding and diversification before vest day.
Free RSU and equity compensation calculator from Fynvorax.
Practical tip Start with round numbers from your bank or contract. You can refine decimals after the first pass.
What to enter
Have these handy before you start. Names vary by tool, but the ideas are the same.
Income, gains, or transaction amounts
Holding period or filing status where relevant
Rates or brackets that apply to your case
State or local rules if the tool supports them
Quick workflow
Enter amounts as shown on your statements.
Pick the filing options that match your situation.
Use the result as a rough check before filing.
Free calculator Model RSU vest value, supplemental withholding, and net shares in the RSU tax calculator.
Worked example (illustrative)
2,000 RSUs vest at $50 FMV ($100,000 W-2 income). At 22% supplemental withholding, roughly $22,000 is withheld—your true marginal rate might be 32%, creating an April balance due. Sell-to-cover might leave ~1,560 net shares after tax withholding, depending on broker policy. Enter grant size and vest price in the RSU tax calculator; multi-state and bonus stacking are simplified—not tax advice.
Common search questions
RSU tax calculator — vest income and withholding on W-2.
Restricted stock tax calculator — same tool; plan around vest dates.
RSU withholding calculator — supplemental rate vs actual marginal tax.
Open the tool when you already have a quote, a deadline, or a what-if and need a clear number for taxes.
Situations people use it for
Rough-order tax impact before talking to a CPA
Comparing entity or filing structures at a high level
Estimating proceeds after tax on a sale or exercise
How to read the result
Treat the output as a structured estimate. Small input changes should move the result in a direction that makes sense.
Run a conservative case first. If it still works, you have margin.
Change one field at a time so you know what actually moved the number.
Save the scenario with a name you will recognize later ("2027 refi", "15-year plan").
This model assumes: Free RSU and equity compensation calculator from Fynvorax.
Common slip-ups
Using the result as if it were a tax return (it is only a model)
Using last year's brackets for a life event that changed your situation
Ignoring state/local when only federal was modeled
Try it with your numbers
Open the RSU & Equity Compensation calculator, enter your case, and keep a screenshot or PDF if you will revisit the decision. Everything runs in your browser; your inputs are not sent to our servers for the math.