Tax Calculators
Free online tax calculators for income tax, capital gains, self-employment, and more.
Capital Gains Tax Calculator (US)
Calculate US long-term and short-term capital gains tax on stocks, real estate, and other assets. Shows federal tax owed based on your income bracket.
Estimated Quarterly Tax Calculator (US)
Calculate IRS estimated quarterly tax payments. Enter income, deductions, and prior year tax to find quarterly amounts due and avoid underpayment penalties.
Net Investment Income Tax (NIIT) Calculator
Calculate the 3.8% Net Investment Income Tax on income above IRS thresholds. For high earners with dividends, capital gains, rental income, or passive income.
Self-Employment Tax Calculator (US)
Calculate your US self-employment tax (Social Security + Medicare) on freelance or business income. Includes the deductible half and net income after SE tax.