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Tax Refund Calculator
Use this free tax refund calculator to estimate whether you will get money back from the IRS or owe a balance when you file. Enter your income, filing status, deductions, and the federal tax already withheld from your paychecks, and it works out your taxable income, your tax, and your refund or amount owed in seconds.
Total federal income tax taken from your paychecks — Box 2 of your W-2.
Withheld vs. tax owed
Blue: tax withheld. Light blue: tax you owe. The gap is your refund — or your balance due.
How it works
A tax refund is not a gift from the government. It is your own money coming back to you because you paid more federal income tax during the year than your return says you owe. Every paycheck, your employer withholds an estimate of your federal tax and sends it to the IRS. When you file, the real tax is worked out from your income and deductions. If the withheld amount is bigger, the difference is refunded; if it is smaller, you pay the rest.
Gross income is your total income for the year before any deductions — wages, salary, tips, bonuses, and other taxable income added together. For most employees this is close to the amount in Box 1 of the W-2, plus any other income you earned. Federal tax withheld is the total already taken from your paychecks, shown in Box 2 of your W-2. If you had more than one job, add the withheld amounts together.
Filing status matters because it sets both your standard deduction and your tax brackets. A married couple filing jointly gets a larger standard deduction and wider brackets than a single filer on the same income, so they usually owe less tax. Deductions reduce the income that gets taxed. The standard deduction is a fixed amount set by the IRS — for 2026 it is $16,100 for single filers, $16,100 for married couples filing separately, $32,200 for married couples filing jointly, and $24,150 for heads of household. If your itemized deductions (mortgage interest, state taxes, charitable gifts, and similar) add up to more than the standard amount, itemizing saves you money, so this calculator lets you enter your own itemized total instead.
Once deductions are subtracted, the rest is taxable income, and it is taxed in slices called brackets. Each slice is taxed at its own rate, and only the income inside a slice gets that rate. The 2026 single brackets used here are: 10% up to $12,400; 12% up to $50,400; 22% up to $105,700; 24% up to $201,775; 32% up to $256,225; 35% up to $640,600; and 37% above that. The 2026 married filing jointly brackets are: 10% up to $24,800; 12% up to $100,800; 22% up to $211,400; 24% up to $403,550; 32% up to $512,450; 35% up to $768,700; and 37% above that. The 2026 married filing separately brackets match the single brackets through the 32% bracket, then reach 35% up to $384,350 and 37% above that. The 2026 head of household brackets are: 10% up to $17,700; 12% up to $67,450; 22% up to $105,700; 24% up to $201,750; 32% up to $256,200; 35% up to $640,600; and 37% above that.
Your marginal tax rate is the rate on your last dollar of income, while your effective tax rate is your total tax divided by your gross income. The effective rate is almost always lower, because part of your income is covered by the deduction and the lower slices are taxed at lower rates. Remember that this is a simplified estimate: it does not include tax credits (such as the child tax credit), adjustments to income, capital gains taxed at special rates, or state tax. Those can change a real refund by hundreds or thousands of dollars.
Worked example
Sarah is a single filer who earned $60,000 last year and had $7,000 of federal tax withheld from her paychecks. She takes the standard deduction. Here is how her refund works out, step by step.
Step 1: Subtract the standard deduction. For a single filer in 2026 the standard deduction is $16,100, so her taxable income is $60,000 − $16,100 = $43,900.
Step 2: Tax the first slice. The first $12,400 of taxable income is taxed at 10%, which is $12,400 × 0.10 = $1,240.
Step 3: Tax the next slice. The remaining $31,500 ($43,900 − $12,400) falls in the 12% bracket, which is $31,500 × 0.12 = $3,780.
Step 4: Add the slices. Her total federal tax is $1,240 + $3,780 = $5,020. Her marginal rate is 12%, because the last dollar of taxable income falls in the 12% bracket, and her effective rate is $5,020 ÷ $60,000 = 8.37%.
Step 5: Compare with what she already paid. She withheld $7,000 and owes $5,020, so her refund is $7,000 − $5,020 = $1,980.
Enter the same numbers — Single, $60,000 income, $7,000 withheld, standard deduction — and the calculator shows exactly the same result: a $1,980.00 refund, with $5,020.00 tax owed on $43,900 of taxable income.
FAQ
How is my tax refund calculated?
Your refund is the difference between the federal income tax you already paid through withholding and the tax you actually owe on your return. First the calculator subtracts your deduction from your gross income to get taxable income, then applies the 2026 federal tax brackets to that income. If you withheld more than you owe, the extra comes back as a refund; if you withheld less, you owe the difference.
What is the standard deduction for 2026?
For 2026 the standard deduction is $16,100 for single filers, $16,100 for married couples filing separately, $32,200 for married couples filing jointly, and $24,150 for heads of household. This calculator uses those figures automatically when you choose the standard deduction.
Why is my refund smaller than I expected?
The most common reason is that your withholding was close to your actual tax, so there was little extra to return. A raise, a second job, a change in filing status, or losing a credit can all push your real tax up while your withholding stays the same. A refund is not free money from the government — it is simply the tax you overpaid during the year coming back to you.
Does this calculator include state tax?
No. This calculator estimates your federal income tax refund only. State income tax is separate, varies by where you live, and is $0 in some states. It also does not include Social Security or Medicare payroll taxes, which are not refundable through your income tax return in the usual way.
What if the calculator says I owe money instead of getting a refund?
That means your employer withheld less federal tax than you owe on your income. You would need to pay the balance when you file. It is common after a raise, a bonus, freelance income, or a job change. To avoid it next year, you can ask your employer to withhold extra tax on your W-4 or make estimated tax payments during the year.