About CalcTaxUSA

CalcTaxUSA is an independent reference site for U.S. federal individual income tax figures. It republishes the numbers the IRS releases each year — bracket thresholds, standard deductions, account limits — and provides calculators that apply those numbers to your inputs.

Every figure on this site is taken from a published IRS revenue procedure, notice, or official guidance page, and each page links to the source it uses. The site is updated when the IRS publishes new annual adjustments, typically each October–November.

This site is not affiliated with the IRS, Treasury, or any tax preparation company. It does not prepare returns, give advice, or collect any tax information — calculations run entirely in your browser and nothing you enter is transmitted or stored.