Reduce your quarterly tax payments
Estimate your lowest quarterly tax payment, avoid penalties, and more.
What's your filing status?
Safe Harbor, your penalty-proof quarterly payment
One number from last year's return is all it takes. The safe harbor rule protects you from underpayment penalties no matter what you earn this year. Enter last year's total tax and get your four payments with due dates in seconds.
Find my safe harbor amount →Free tax calculators
Each one answers a single question fast. Together, they're the pieces of your full quarterly estimate.
RSU Tax Calculator
The tax your RSU vests really add, and the gap the flat 22% withholding leaves behind.
Open calculator →Retirement Withdrawal Tax Calculator
Federal tax on IRA withdrawals, pensions, and Social Security, and the quarterly payment that avoids a penalty.
Open calculator →RMD Tax Calculator
Your required minimum distribution, the federal tax it creates, and the withholding percentage that covers it.
Open calculator →Self-Employment Tax Calculator
Your whole federal bill on 1099 and freelance income. SE tax plus income tax, and what to set aside.
Open calculator →Income Tax Calculator
See your federal income tax and effective rate by bracket and filing status.
Open calculator →Capital Gains Tax Calculator
Estimate the tax on your long-term capital gains at the 0/15/20% rates.
Open calculator →Official IRS methods
Built on the Publication 505 safe harbor and annualized income methods.
Fast and free
Get a clear answer in under a minute. No signup for the free calculators.
Built by CPAs
Professional-grade accuracy you can trust for real tax decisions.
Ready for your complete estimate?
Run every income type, state, and penalty check together in one accurate quarterly calculation.