Equity Compensation Calculator

Model vesting, taxes, dilution, exercise cost, and ownership. See present value, upside, and annualized rewards. Plan negotiations with realistic scenarios before accepting your offer.

Calculate Your Equity Package

Enter current pay, grant details, vesting status, dilution, and exit assumptions. Results appear above this form after submission.

Grant Type

Base Salary

Annual Bonus

Shares Granted

Vested Percentage

Strike Price

Company Valuation

Fully Diluted Shares Outstanding

Current Share Price

Expected Exit Share Price

Years to Exit

Total Vesting Years

Estimated Dilution Percentage

Cash Tax Rate

Equity Tax Rate

Example Data Table

Scenario	Grant Type	Shares	Strike	Vested %	Exit Price	Estimated Net Exit
Growth startup offer	ISO	12,000	$4.00	50%	$18.00	$53,222.40
Late-stage company	RSU	4,500	$0.00	100%	$22.00	$71,280.00
Higher risk package	NSO	20,000	$6.50	25%	$15.00	$30,600.00

Formula Used

Implied share price = Company valuation ÷ Fully diluted shares outstanding
Vested shares = Shares granted × (Vested percentage ÷ 100)
Effective vested shares = Vested shares × (1 − Dilution percentage ÷ 100)
RSU gross exit value = Effective vested shares × Exit share price
Option gross exit value = Max(Exit share price − Strike price, 0) × Effective vested shares
After-tax exit value = Gross exit value × (1 − Equity tax rate ÷ 100)
After-tax cash compensation = (Base salary + Annual bonus) × (1 − Cash tax rate ÷ 100)
Annualized equity value = After-tax exit value ÷ Years to exit
Ownership percentage = Shares granted ÷ Fully diluted shares outstanding × 100

How to Use This Calculator

Select the grant type that matches your offer: RSU, ISO, or NSO.
Enter salary and annual bonus to compare cash compensation against equity upside.
Fill in shares granted, vested percentage, and strike price if your grant is an option.
Add company valuation and fully diluted shares to estimate share price when needed.
Set an expected exit share price, years to exit, dilution, and tax assumptions.
Click Calculate Compensation to show results above the form.
Use the CSV button to export numbers and the PDF button to save the results area.

Frequently Asked Questions

1. What does this calculator estimate?

It estimates vested ownership, dilution-adjusted shares, exercise cost, gross exit value, after-tax exit value, and how equity compares with salary plus bonus.

2. Does it work for RSUs and stock options?

Yes. It supports RSUs, ISOs, and NSOs. The formula changes automatically so options use strike price while RSUs use full share value.

3. Why is dilution included?

Dilution reduces your effective ownership as new shares are issued. Including it gives a more realistic planning estimate for future upside.

4. What if I do not know the current share price?

Enter company valuation and fully diluted shares outstanding. The calculator can derive an implied share price from those two values.

5. Is the tax estimate exact?

No. It is a simplified planning input. Actual taxes depend on jurisdiction, holding period, grant type, and your full income situation.

6. What is break-even exit price?

For options, it is the strike price. Exit prices below that level create no intrinsic gain. For RSUs, break-even is effectively zero.

7. How should I compare two job offers?

Run each offer with consistent tax, dilution, and exit assumptions. Then compare after-tax exit value, annualized equity value, and total after-tax compensation.

8. Should I rely only on this calculator?

No. Use it as a negotiation and planning tool. Review grant documents, vesting terms, liquidity rights, and tax treatment before making decisions.