US Tax Calculator 2024

Calculate your federal income tax and estimate your refund

2024 Standard Deduction: Single ($14,600), Married ($29,200), Head of Household ($21,900)

2024 Tax Brackets

The US uses a progressive tax system with rates ranging from 10% to 37% based on income brackets. This calculator provides estimates based on 2024 federal tax brackets. For accurate tax filing, consult a tax professional or use official IRS resources.

What is a US Tax Calculator?

A US tax calculator estimates your federal income tax liability based on your taxable income, filing status, and applicable deductions. It applies the current IRS tax brackets — which use a marginal rate system where different portions of your income are taxed at different rates — to give you an estimated tax amount and effective tax rate.

This is an estimation tool for planning purposes. For official tax filing, always use IRS-approved software or consult a tax professional. Tax laws change annually, so verify current brackets on IRS.gov.

How to Use the US Tax Calculator

  1. Enter your annual gross income in the income field.
  2. Select your filing status — Single, Married Filing Jointly, Married Filing Separately, or Head of Household.
  3. Enter any deductions you plan to claim (standard or itemized).
  4. Click Calculate Tax to see your estimated federal income tax, effective tax rate, and marginal tax rate.
  5. Adjust income or deductions to model different scenarios (bonus income, retirement contributions, etc.).

When Would You Use This?

Freelancers and self-employed workers use tax calculators to estimate quarterly estimated tax payments. Without an employer withholding taxes, independent contractors must pay estimated taxes four times per year — getting this estimate right avoids IRS underpayment penalties.

Employees use it to check if their withholding is accurate (compare the estimate to what Form W-4 has set aside), or to model the tax impact of a raise, bonus, or side income. It's also useful for financial planning: knowing your marginal rate tells you the value of each dollar contributed to a pre-tax 401(k) or HSA.