How to Estimate Your Tax Refund from Your Last Pay Stub

You can estimate your federal tax refund using two numbers from your last pay stub: year-to-date (YTD) gross pay and YTD federal income tax withheld. Subtract the standard deduction from your gross pay to get taxable income, apply the 2026federal tax brackets to calculate what you owe, and compare that to what was withheld. If withholding exceeds the tax, the difference is your estimated refund. Below is the full step-by-step process.

What you need from your pay stub

Your pay stub contains several YTD (year-to-date) figures. For a basic refund estimate, you need two:

• YTD Gross Pay: Your total earnings before any deductions. This is your gross income for the year (or projected gross if you are estimating mid-year).
• YTD Federal Income Tax Withheld: Often labeled "Fed Tax," "FIT," or "Federal W/H." This is the total federal income tax your employer has sent to the IRS on your behalf.

If you use your final pay stub of the year (or close to it), these numbers will be very close to the amounts that appear on your W-2 in January.

Optionally, note any pre-tax deductions like 401(k) contributions, health insurance premiums, or HSA contributions. These reduce your gross income before tax is calculated.

Step-by-step refund estimate

Follow these steps for a rough federal refund estimate using 2026figures:

1. Start with YTD gross pay. If you have pre-tax deductions (401k, health insurance), subtract them. The result is your approximate adjusted gross income (AGI).
2. Subtract the standard deduction. For 2026, the standard deduction is $16,100 (single), $32,200 (married filing jointly), or $24,150 (head of household). If you itemize, use your estimated itemized deduction total instead.
3. The result is your estimated taxable income. If this number is zero or negative, your estimated tax is zero.
4. Apply the 2026 tax brackets. Federal income tax is progressive: each portion of your income is taxed at the rate for the bracket it falls into. For a single filer, the first $12,400 is taxed at10%, the next portion up to $50,400 at 12%, and so on.
5. Subtract any credits. If you have qualifying children, subtract $2,200 per child for the Child Tax Credit. Subtract any other applicable credits (education, energy, etc.).
6. Compare to your withholding. If your YTD federal withholding exceeds the tax calculated in the previous steps, the difference is your estimated refund. If the tax exceeds withholding, you may owe money.

Worked example: $55,000 single filer

A single filer with no dependents has the following on their final pay stub for tax year 2026:

• YTD gross pay: $55,000
• YTD federal tax withheld: $6,200
• No pre-tax deductions, no credits

This estimate assumes no other income, no credits, and that the filer takes the standard deduction. The actual refund could be higher if credits apply, or lower if additional income (1099s, interest, capital gains) exists.

Adjustments to consider

The basic method above works well for W-2 employees with a single income source. Here are adjustments that may make your estimate more accurate:

• Pre-tax 401(k) contributions: These reduce your gross income before tax. Subtract them in step 1.
• OBBBA deductions: If you have qualified tips or overtime premium pay, subtract the applicable deduction (up to $25,000 for tips, $12,500 for overtime) from your AGI.
• Child Tax Credit: Subtract $2,200 per qualifying child from the tax calculated in step 4.
• Other income: If you have freelance income (1099-NEC), investment income (1099-DIV, 1099-INT), or other sources not on your pay stub, add those to gross income in step 1.
• Itemized deductions: If your mortgage interest, state and local taxes, and charitable contributions exceed $16,100, itemizing may lower your taxable income further.

When this method falls short

The pay stub method provides a useful ballpark but has limitations:

• Multiple jobs: If you or your spouse have multiple W-2s, you need to combine all of them for an accurate picture.
• Self-employment income: Self-employment tax adds an additional layer that the basic method does not capture.
• Capital gains and dividends: Investment income is taxed at different rates and may not appear on your pay stub at all.
• Complex credits: Education credits, energy credits, and state-specific credits all affect the final number.
• AMT: High-income filers subject to the Alternative Minimum Tax will need a more detailed calculation.

For a more complete picture, gather all income documents and use a comprehensive calculator.

Use the online calculator

If you want to skip the manual math, the tax refund estimator does all of these calculations automatically. Enter your income, filing status, withholding, dependents, and any OBBBA deductions, and it shows your estimated refund in seconds.

You can also use the paycheck calculator to see how each paycheck translates into annual income and withholding, making it easier to project your year-end numbers mid-year.