Quarterly Estimated Tax Calculator
Estimate how much to pay in quarterly estimated federal income tax. Enter your expected annual tax and any withholding already paid (e.g. from a W-2 job). We divide the remaining amount into four equal payments. For planning only.
Quarterly estimated tax
How this is calculated
Remaining tax = expected annual tax − withholding already paid (use $0 if none). Quarterly payment = remaining ÷ 4. We do not prorate by quarter; use for a simple equal-split estimate. IRS due dates are typically April 15, June 15, Sept 15, Jan 15.
Use this tool for
Use it when you have self-employment or other income not subject to withholding, or when you need to top up after a W-2 job. Pair with the self-employment tax calculator and the annual tax calculator for a full picture.
Common questions
Are the rates up to date?
We use representative rates. Verify with your state revenue department or tax advisor.
