Equity Tools

Free calculators to help you understand your stock options, plan exercises, and estimate taxes. Built for startup employees and shareholders.

Estimate how many ISOs you can exercise before triggering the Alternative Minimum Tax.

Compare multiple equity strategies side by side — exercise now vs later, hold vs sell, upside vs downside.

Exercise Timing Planner

See the tax impact of exercising stock options now versus waiting until an exit or IPO.

Stock Option Tax Calculator

Estimate federal, state, and AMT taxes for exercising ISOs, NSOs, or receiving RSUs.

Exit Calculator

Model net proceeds for options, RSUs, or shares at different exit valuations.

Equity Compensation Calculator

Evaluate and compare job offers with salary, bonus, and equity components.

Private Market Insights

Compare multiple valuation methods for pre-IPO equity — 409A, secondary, fund marks, and more.

Liquidity Guide

Compare secondary sales, equity financing, exchange funds, and donor-advised fund strategies for private company stock.

About these tools

These calculators provide illustrative estimates based on simplified tax models. They are intended for educational purposes only and should not be used as a substitute for professional tax or financial advice. Tax laws are complex, vary by jurisdiction, and change frequently. Always consult a qualified tax advisor before making financial decisions.

All calculations are approximate and for illustrative purposes only. Not tax advice. Consult a qualified professional for your specific situation.