Tax Refund Calculator
It estimates your federal refund or balance owed by comparing tax on your income against what has already been withheld from your paychecks.
Estimated refund
$1,330
Gross income
$75,000
Standard deduction
$16,100
Taxable income
$58,900
Tax before credits
$7,670
Credits applied
$0
Tax after credits
$7,670
Federal estimate only, and not tax advice. State income tax, credits that phase out and other income are not modelled — confirm with a tax professional before relying on this.
What it calculates
It estimates your federal refund or balance owed by comparing tax on your income against what has already been withheld from your paychecks.
Why it matters
Knowing the answer before you file removes the two worst surprises: an unexpected bill, or discovering you gave the government an interest-free loan all year.
Who it's for
Employees checking their withholding, households with a new child or second job, and anyone deciding whether to adjust their W-4.
Formula
- W
- Wages and other taxable income
- D
- Standard or itemized deduction
- T
- Tax on taxable income, from the bracket table
- H
- Federal income tax already withheld
Worked example
$75,000 of wages with $9,000 withheld
- 1Taxable income = 75,000 − 16,100 standard deduction
- 2Tax is charged band by band on what remains
- 3Refund = withholding − tax after credits
A refund of roughly $2,300
How the tax refund calculator works
Your deduction comes off gross income to give taxable income, and tax is charged band by band on that figure rather than all at one rate. Credits — the child tax credit being the largest for most households — are then subtracted from the tax itself, dollar for dollar, which makes a credit worth far more than a deduction of the same size. Comparing what remains against the amount already withheld gives a refund if you overpaid or a balance if you did not. Itemizing only helps to the extent it beats the standard deduction, which is why most filers never itemize at all.
Your deduction comes off gross income, and tax is charged band by band on what remains rather than all at one rate. Credits then come off the tax itself, dollar for dollar, which is why a credit is worth far more than a deduction of the same size.
A refund near zero is the goal. A large one means too much was withheld all year, and you lent the money out at no interest.
Common mistakes
- Confusing a deduction with a credit; a credit cuts the tax itself and is worth far more.
- Itemizing deductions worth less than the standard deduction you would have received anyway.
- Forgetting that a second job or freelance income is often under-withheld.
- Treating a large refund as a win rather than as money lent out interest-free for a year.
Tips and best practice
- A refund near zero means your withholding is right, which is the goal.
- Update your W-4 after a marriage, a birth or a second job rather than waiting for April.
- If you owe a lot, check whether a quarterly estimated payment would avoid an underpayment penalty.
Frequently asked questions
How much will I get back in taxes?
It depends on your income, filing status, dependents and how much was withheld. The refund is simply your withholding less the tax you actually owe after credits.
Why is my refund smaller this year?
The usual causes are a raise moving income into a higher band, a change in withholding on a new W-4, a second job, or a child ageing out of a credit.
Should I aim for a big refund?
No. A large refund means too much was withheld all year, so you lent the government money at no interest. Withholding close to your actual bill is better.
Does this include state tax?
No. This estimates federal income tax only. State income tax, where it applies, is assessed separately and varies enormously between states.
What is the child tax credit worth?
It reduces your tax bill directly for each qualifying child. Because it is a credit rather than a deduction, its full value comes off the tax you owe.
Related calculators
Methodology & trust
- Formula source
- IRS Form 1040 instructions and Rev. Proc. 2025-32 for tax year 2026
- Last updated
- 2026-07-28
- Privacy
- Every calculation runs in your browser. No inputs are sent to a server or stored.