Calculator, 2026 example figures
Quarterly estimated tax calculator
Enter your expected tax, withholding and last year's tax to see the safe-harbor amount and each quarterly payment.
2026 examples. Figures, rates and dates on this page change by year; check current IRS and state guidance before you rely on them.
If you are self-employed or have income without withholding, the IRS expects tax to be paid during the year in four installments. Enter your expected tax, the amount withheld from wages and last year's tax to see the safe-harbor amount and how much each installment should be.
The tool uses the safe-harbor rules for individuals filing Form 1040-ES on a calendar year. It does not work out your tax, and states have their own estimated tax rules. The math runs in your browser.
This content is general information. Tax rules change from year to year, and it is not advice for your situation. Check current IRS and state guidance and talk to a CPA before you make a decision.
Rules used
- Pay the smaller of 90% of this year's tax or 100% of last year's tax (110% if last year's AGI was over the limit above).
- Withholding counts toward the total; the rest is split into four equal installments.
- Generally no penalty if you owe less than $1,000 after withholding and credits.
Meeting
If you would like the result reviewed against your own records, call to set up a meeting.