Tax refund estimator

Tax refund estimator: what it is for

The tax refund estimator compares the federal income tax withheld from your paychecks with the tax you are likely to owe for 2026. It applies the standard deduction (or your itemized deductions), the 2026 tax brackets for your filing status and the child tax credit.

If you had more withheld than you owe, the difference is your refund. If you had less, you will owe the IRS when you file.

How to use

1. Enter your wages and filing status.
2. Enter the federal tax withheld (W-2 box 2).
3. Add children and deductions to see your refund or balance due.

When to use it

• Planning what to do with your refund.
• Avoiding a surprise tax bill in April.
• Deciding whether to change your W-4.

Frequently asked questions

How is the refund calculated?

Your refund is the federal income tax withheld during the year minus the tax you actually owe. The tax owed is figured on your taxable income (income minus pre-tax deductions and the standard or itemized deduction), minus credits like the child tax credit.

Where do I find how much was withheld?

On your last pay stub of the year (federal income tax, year to date) or in box 2 of your W-2.

What is not included?

This is an estimate using 2026 federal brackets. It does not include state tax, the earned income tax credit, education credits, capital gains or self-employment tax. Use it to plan, not to file.

Is it really free?

Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 tools are free and run right in your browser.

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