Finance & Investing

Tax Refund Estimator

Project your refund or balance due before filing season arrives.

A big tax refund feels like a windfall — but it is actually an interest-free loan you gave the government. The ideal refund is close to zero: you kept your money all year, invested or used it, and paid the IRS exactly what you owed. This estimator projects your 2026 federal refund or balance due based on your income, withholding, and deductions, and tells you whether to adjust your W-4.

Your 2026 tax picture

$
$
$
Estimated federal result
$0

Enter your tax details to estimate your refund or balance due.

Note: All calculations run in your browser. Nothing is sent to a server, stored, or tracked.

How this calculator works

The math, in plain English

This estimator uses 2026 federal tax brackets and the standard deduction ($14,600 single / $29,200 married filing jointly / $21,900 head of household). It calculates your taxable income, applies the progressive tax brackets, subtracts credits, and compares the result to what you have already withheld.

2026 federal tax brackets (single)

10% on $0-$11,600; 12% on $11,601-$47,150; 22% on $47,151-$100,525; 24% on $100,526-$191,950; 32% on $191,951-$243,725; 35% on $243,726-$609,350; 37% on $609,351+. Married brackets are roughly double; head of household falls in between.

A worked example
$85,000 income, single, standard deduction. Taxable income: $85,000 − $14,600 = $70,400. Tax: $1,160 (10% bracket) + $4,266 (12% bracket) + $5,128 (22% bracket) = $10,554. Subtract $0 credits. Total liability: $10,554. With $12,000 withheld: refund of $1,446.

Why a big refund is not a good thing

A $3,600 refund means you overpaid the IRS by $300/month for a year. That is $300/month you could have used for debt payoff, investing, or simply cash flow. The IRS does not pay interest on refunds. If you invested that $300/month in an index fund instead of letting the IRS hold it, you would have earned ~$200+ in returns on top of getting your money back. Aim for a refund under $500.

How to adjust your withholding

Submit a new W-4 to your employer. To reduce a too-large refund, increase the number of dependents or add an additional withholding amount in step 4(c) — but negative, to reduce withholding. The IRS Withholding Estimator on IRS.gov is the official tool; use this calculator for planning.

FAQ

Common questions

Is this calculator accurate for my situation?
It is a reasonable estimate for simple W-2 income. It does not handle self-employment tax, capital gains, AMT, foreign income, or complex credits. If you have any of those, use tax software or consult a CPA. Always cross-check against IRS Publication 15-T and the official IRS Tax Withholding Estimator.
Why is my actual refund different from this estimate?
Several reasons: (1) state taxes are not included; (2) FICA (Social Security + Medicare) is separate and not refundable; (3) certain credits phase out at specific income levels; (4) the estimator uses simplified bracket math. Treat the result as ±$500 of your actual refund.
Should I aim for a refund or a balance due?
Aim for a small balance due (under $1,000). You avoid underpayment penalties if you owe less than $1,000 or less than 90% of last year's tax. A small balance due means you kept your money all year — but set the cash aside so you can pay on April 15.
What is the underpayment penalty?
The IRS charges interest (currently ~8%) plus penalties if you owe more than $1,000 at filing AND your withholding was less than 90% of your current-year tax or 100% of last-year's tax (110% if AGI over $150,000). To avoid it, adjust withholding mid-year if your situation changes.
How does the child tax credit work?
For 2026, the CTC is $2,000 per qualifying child under 17. It begins to phase out at $200,000 single / $400,000 married AGI. It is partially refundable (up to $1,600 as Additional Child Tax Credit). This estimator includes it; if you have children under 17, enter them in both the "dependents" and "child credit" fields.
Read next

The article behind this calculator

Travel Hacking With Frequent Flyer Miles: A Beginner's Field Guide

Cents-per-mile, sweet-spot redemptions, and the award charts worth memorizing.

Read article
Try next

Related calculators

Mortgage Payoff Calculator See how extra principal payments redraw your payoff date and interest. Compound Interest Calculator Watch compounding turn steady contributions into long-horizon wealth. Retirement Corpus Estimator Translate your target lifestyle into the nest egg you actually need. Debt Avalanche vs Snowball Calculator Compare the two payoff strategies side by side, dollar for dollar.

Disclaimer: This calculator is provided for educational and informational purposes only. It does not constitute financial, tax, legal, medical, or professional advice. Results depend on the accuracy of the inputs you provide and the assumptions documented above. Always consult a qualified professional before making decisions based on these calculations.