RSU Vesting Tax Withholding & Sell-to-Cover Net Shares Calculator

Compute net vested shares and supplemental tax under-withholding gap.

Net RSU Value Delivered
USD 45,240.00
Net Shares Delivered 312 shares
Shares Sold to Cover Withholding 88 shares
Estimated Year-End Tax Under-Withholding Gap USD 7,540.00
Inputs
Amounts are treated in the selected currency; no foreign-exchange conversion is applied.
shares
Number of RSUs vesting in this tranche.
USD
Stock Fair Market Value (FMV) on vest date.
%
Employer statutory supplemental withholding rate (%).
%
Your true combined federal + state + payroll marginal tax rate (%).
Results & Graph
Net RSU Value Delivered
USD 45,240.00
Net Shares Delivered
312 shares
Shares Sold to Cover Withholding
88 shares
Estimated Year-End Tax Under-Withholding Gap
USD 7,540.00

Net RSU Value Delivered

Graph 1 • Vesting Shares Count Sensitivity Recalculates the domain equation across 50% to 150% of the primary input while holding other parameters constant.
0 USD 36.6k USD 73.3k USD 50%: 22,620 USD 22.6k 50% 75%: 33,930 USD 33.9k 75% 100%: 45,240 USD 45.2k 100% 125%: 56,550 USD 56.5k 125% 150%: 67,860 USD 67.9k 150%
Graph 2 • Primary & Supporting Metric Comparison Compares the primary output alongside supporting domain benchmarks.
Net RSU Value Delivered USD 45,240.00 Net Shares Delivered 312 shares Shares Sold to Cover Withholding 88 shares Estimated Year-End Tax Under-Withholding Gap USD 7,540.00
Graph 3 • Exact Output Table & Units Displays each calculated output in its exact domain unit.
Net RSU Value DeliveredUSD 45,240.00Net Shares Delivered312 sharesShares Sold to Cover Withholding88 sharesEstimated Year-End Tax Under-Withholding GapUSD 7,540.00
Summary: Vesting 400 shares at USD 145.00 (USD 58,000.00 gross) withholds 88 shares, delivering 312 net shares (USD 45,240.00).
Summary: Vesting 400 shares at USD 145.00 (USD 58,000.00 gross) withholds 88 shares, delivering 312 net shares (USD 45,240.00).
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Formula & Mathematical Methodology: RSU Vest & Tax Mathematical Formula

GrossVest = VestedShares × FMV
SharesWithheld = ceil(GrossVest × WithholdingRate / FMV)
GrossVest = VestedShares × FMV; SharesWithheld = ceil(GrossVest × WithholdingRate / FMV)
  • vestingSharesCount: Vesting Shares Count (shares)
  • fairMarketValuePerShare: Fair Market Value Per Share (USD)
  • statutoryWithholdingPct: Statutory Withholding Pct (%)
  • actualMarginalTaxPct: Actual Marginal Tax Pct (%)

Rounding: Intermediate calculations retain full IEEE-754 floating-point precision; displayed currency and ratios round to 2 decimal places.

Worked Example: Benchmark Scenario: RSU Vest & Tax

Compute net vested shares and supplemental tax under-withholding gap.

  1. Enter the portfolio, option, lease, or corporate balance-sheet inputs.
  2. Evaluate the core equation: GrossVest = VestedShares × FMV; SharesWithheld = ceil(GrossVest × WithholdingRate / FMV).
  3. Inspect the primary valuation output, risk metrics, and 3 visual SVG graphs.
Result: Computes RSU Vest & Tax using GrossVest = VestedShares × FMV; SharesWithheld = ceil(GrossVest × WithholdingRate / FMV).

Frequently Asked Questions

How does the RSU Vesting Tax Withholding & Sell-to-Cover Net Shares Calculator calculate results?

It evaluates GrossVest = VestedShares × FMV; SharesWithheld = ceil(GrossVest × WithholdingRate / FMV) directly in your browser and updates the three domain SVG visualizations immediately as you adjust any input.

Can I compare multiple investment or financing scenarios side by side?

Yes. Click "Compare (0/3)" in the results toolbar to pin up to three scenarios side by side.

Are my financial numbers kept private?

Yes. All calculations run 100% locally in your browser with zero server uploads.

Finance & Investing · Compensation & Equity Tax

RSU Vesting Tax Withholding & Sell-to-Cover Net Shares Calculator: inputs, method, and how to read the result

Compute net vested shares and supplemental tax under-withholding gap.

Choose inputs for the case you are checking

The defaults are illustrative. Replace them with values for your case and keep the units shown beside each field.

  • Display Currency: Amounts are treated in the selected currency; no foreign-exchange conversion is applied.
  • Vesting Shares Count: Number of RSUs vesting in this tranche.
  • Fair Market Value Per Share: Stock Fair Market Value (FMV) on vest date.
  • Statutory Withholding Pct: Employer statutory supplemental withholding rate (%).

What the calculation includes

With the default values shown, Net RSU Value Delivered is USD 45,240.00. The calculation follows RSU Vest & Tax Mathematical Formula; the formula and variable definitions above show how the inputs combine.

One-input check: With the other defaults held constant, changing Vesting Shares Count from 400 shares to 440 shares changes Net RSU Value Delivered from USD 45,240.00 to USD 49,735.00. This is a comparison inside the calculator's stated model, not a prediction.

Where to use caution

  • Uses standard quantitative finance, GAAP/IFRS operating ratios, and continuous/periodic compounding conventions.
  • For educational and analytical modeling only; consult a licensed CPA, CFA, or fiduciary advisor before executing tax or derivative transactions.

Scope: Global Financial & Corporate Valuation Standard Check the assumptions and limitations against your situation before relying on the estimate.

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