Investment & Equity Compensation Tax Calculators

Investment income has its own schedule. Long-term capital gains and qualified dividends are taxed at 0%, 15% or 20% depending on taxable income, plus the 3.8% net investment income tax above $200,000 of modified AGI for single filers ($250,000 joint), and most states tax gains as ordinary income. Equity compensation is messier: RSUs are wages at vesting, ISOs can trigger the alternative minimum tax at exercise, and NSOs are wages on the spread.

The capital gains calculator handles federal, NIIT and state tax on a sale by holding period. The RSU and stock option calculators show what a vest or exercise actually costs, including the 22% supplemental withholding gap that leaves many tech employees with a bill in April. The AMT trigger calculator finds how many ISO shares can be exercised before the AMT bites. The charitable giving optimizer compares cash, appreciated stock, donor-advised-fund bunching and qualified charitable distributions.