United States · 2026 Federal Tax

Quarterly Estimated Tax Calculator

Split an estimated annual federal tax liability into four equal planning payments.

Tax year 2026US dollarsRules & sources ↓

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Enter your values and calculate to see the result.

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Estimated-tax timing

The IRS divides the year into four estimated-tax payment periods. Equal quarters are a planning shortcut only; required payments can differ based on withholding, prior-year tax, annualized income and safe-harbor rules.

Official sources

Rules are based on current IRS guidance for 2026. Verify final filing decisions with the Internal Revenue Service or a qualified tax professional.

Browse all US federal tax and 1099 calculators.

How to use this calculator

  1. Set Estimated annual federal tax liability (default 12000).
  2. Set Expected federal withholding / credits (default 2000).
  3. Select Calculate to update the result. Reset restores the starting values.

Educational estimate for 2026 federal rules only. It does not prepare a tax return and may omit credits, special deductions, state/local taxes and individual circumstances.

Maintained by the CalculatorsOnline Editorial Team. Read our methodology policy.