For software engineers with RSUs

22% withheld. 32–37% owed.
Know your RSU tax gap before the IRS does.

Your broker withholds the IRS flat rate of 22% — but if your total income puts you in a higher bracket, you owe the difference. VestBench calculates the exact shortfall and generates the Form 8949 numbers that stop you from paying twice.

✓ Free withholding calculator✓ Form 8949 cost-basis export✓ Quarterly tax reminders

RSU withholding-gap calculator

Free — no account needed. Estimates only; verify with your CPA.

How it works

1

Calculate your gap

Enter your salary and RSU vest value. See exactly how much you'll owe above what your broker withheld — and how much to set aside each quarter.

2

Track every vest

Add your grants and vesting lots. VestBench records the FMV at each vest date so you always have an accurate cost basis on file.

3

Export Form 8949

When you sell shares, generate the exact column (e) and column (g) adjustments that prevent your broker's $0 cost-basis from doubling your tax bill.

★★★★★

“Finally got my Form 8949 adjustments right. My broker had reported $0 cost basis on $85k of RSU sales — VestBench showed me the exact column (g) number to enter. Saved me from paying tax twice on $85k.”

Staff Engineer · Google · California

What you get

Free

  • ✓RSU withholding-gap calculator
  • ✓1 grant in the tracker
  • ✓Basic dashboard

Pro

$9.99/mo
  • ✓Unlimited grants across all brokers
  • ✓Schwab / E*TRADE CSV import (AI-parsed)
  • ✓Form 8949 col (e)/(g) + code B export
  • ✓Withholding-gap planner per vest event
  • ✓Email alerts: vest dates, tax deadlines
  • ✓Scenario modeler (sell now vs later)

Stop leaving money on the table every April.

Most RSU holders overpay because their broker filed $0 cost basis on sold shares. VestBench fixes that — and makes sure you never miss a quarterly payment deadline.

14-day free trial · no credit card required · cancel any time

Start 14-day free trial →

One plan. Everything included.

14-day free trial. Then $9.99/month. Cancel any time.
An IRS underpayment penalty runs 8% annually — one quarter's gap pays for years of VestBench.

Pro

$9.99 / month

First 14 days free — no card required to sign up

  • ✓RSU withholding-gap calculator
  • ✓1 grant in the tracker
  • ✓Basic dashboard
  • ✓Unlimited grants across all brokers
  • ✓Schwab / E*TRADE CSV import (AI-parsed)
  • ✓Form 8949 col (e)/(g) + code B export
  • ✓Withholding-gap planner per vest event
  • ✓Email alerts: vest dates, tax deadlines
  • ✓Scenario modeler (sell now vs later)
Start free trial →