Tax Return Calculator

What is a tax return calculator?

A tax return calculator is an online tool that estimates whether you will receive a refund or owe additional tax when you file. It compares two numbers: the total federal income tax you owe for the year, and the amount you already paid through paycheck withholding or estimated tax payments. If you paid more than you owe, the difference comes back to you as a refund. If you paid less, you have a balance due.

The calculator on this page is built for U.S. federal returns and supports the two tax years that matter right now. The 2025 tax year covers income earned in 2025 and is filed during the 2026 filing season. The 2026 tax year covers income earned in 2026 and is useful for planning ahead, adjusting your W-4 withholding, or preparing quarterly 1040-ES estimates.

How the estimate is calculated

The tool follows the same logic as Form 1040, simplified into five steps:

• Total income: wages, other taxable income and long-term capital gains are added together.
• Adjustments: traditional IRA contributions and student loan interest reduce your income to arrive at adjusted gross income (AGI).
• Deductions: the calculator compares your itemized deductions with the standard deduction for your filing status and uses the larger amount. The new OBBBA deductions for tips, overtime, car loan interest and seniors are applied on top, including their income phaseouts.
• Tax: ordinary income runs through the seven federal brackets, while long-term capital gains are taxed at the separate 0, 15 or 20 percent rates.
• Credits and payments: the child tax credit and the credit for other dependents reduce the tax bill, then everything is compared against your withholding to show a refund or balance due.

Standard deduction for 2025 and 2026

Around 90 percent of taxpayers claim the standard deduction instead of itemizing. The One Big Beautiful Bill Act raised the 2025 amounts, and the IRS adjusted them again for inflation in 2026.

Source: IRS Rev. Proc. 2024-40 as amended by OBBBA, and Rev. Proc. 2025-32

Taxpayers who are 65 or older receive an additional standard deduction on top of these amounts, plus a temporary bonus deduction of up to $6,000 per qualifying person for tax years 2025 through 2028, which phases out above $75,000 of income for single filers and $150,000 for joint filers.

Federal tax brackets used by this calculator

The United States uses a progressive system with seven marginal rates. Each rate only applies to the slice of taxable income that falls inside its bracket, so moving into a higher bracket never reduces your take-home pay overall.

Thresholds refer to taxable income after deductions

New deductions under the One Big Beautiful Bill Act

The OBBBA, signed in July 2025, introduced several temporary deductions that apply for tax years 2025 through 2028 and are available even if you take the standard deduction. This calculator models all four:

• Tips: qualified tip income of up to $25,000 per year can be deducted. The deduction shrinks once modified adjusted gross income passes $150,000 ($300,000 for joint filers).
• Overtime pay: up to $12,500 of qualified overtime compensation per year for single filers and $25,000 for joint filers, with the same phaseout thresholds as the tips deduction.
• Car loan interest: up to $10,000 of interest on a loan used to buy a qualified new vehicle, phasing out above $100,000 of income ($200,000 joint).
• Seniors: an extra $6,000 deduction per person aged 65 or older, phasing out above $75,000 ($150,000 joint).

Tax credits included in the estimate

Credits reduce your tax bill dollar for dollar, which makes them more valuable than deductions of the same size. The calculator applies the child tax credit of up to $2,200 per qualifying child under 17, of which up to $1,700 is refundable, and the $500 credit for other dependents. Both begin to phase out once income passes $200,000, or $400,000 for joint filers.

Other credits such as the earned income tax credit, education credits or the saver's credit depend on detailed eligibility rules and are not part of this simplified estimate. If you qualify for them, your actual refund will be higher than the number shown here.

Tax refund vs. tax return

The two terms are often mixed up. A tax return is the form you file with the IRS, typically Form 1040. A tax refund is the money you get back if your payments during the year exceeded your final tax bill. A large refund feels good, but it also means you gave the government an interest-free loan. If your estimated refund is consistently high, adjusting your W-4 withholding puts that money in your paycheck instead.

Tax return calculators for other countries

This calculator covers U.S. federal income tax only. If you file in another English-speaking country, the tax authority there provides an official estimator:

• United Kingdom: the HMRC income tax estimator covers Income Tax and National Insurance for the current tax year.
• Australia: the ATO income tax calculator estimates your refund or debt for recent income years, including the Medicare levy and study loan repayments.
• Canada: the Canada Revenue Agency provides payroll and tax tools for federal and provincial tax.
• New Zealand: Inland Revenue calculates most refunds automatically through its end-of-year income tax assessment.
• Ireland: Revenue offers a statement of liability through its myAccount service.

Tax systems differ in rates, allowances and filing rules, so always use the estimator that matches the country where you are tax resident.

Frequently asked questions