No, adjusted gross income (AGI) is not a number you can read from one pay stub. A stub shows one employer’s payroll information for a payment and often year-to-date (YTD) wages. AGI is calculated on a person’s annual federal income tax return: total income from all applicable sources minus permitted adjustments to income. On the available 2025 Form 1040, filed in 2026, AGI is calculated on line 11a and carried to line 11b. A pay stub can help you estimate a wage component, but it cannot supply the final return figure.
This guide covers U.S. federal individual income tax for tax year 2025, using forms available October 5, 2026. The same conceptual distinction applies while planning 2026 income, but use the final forms and instructions for the tax year you actually file. We’ll trace a fictional employee’s gross pay through Form W-2 and Form 1040, explain which payroll deductions count at which stage, and show where to retrieve a filed AGI. It is a reconciliation example, not a substitute for your complete return.
What is adjusted gross income?
AGI is total taxable income reported on the return minus qualifying adjustments to income. The IRS explains the sequence: add the applicable income items on Form 1040 line 9, subtract adjustments on line 10, and report the result as AGI on line 11. The 2025 form labels the computation line 11a and repeats the amount on line 11b on page two. It combines more than wages: taxable interest, dividends, capital gains, taxable business income, and other reportable income may also enter the return, depending on the person’s facts. A joint return combines the spouses’ applicable amounts.
AGI is not the same as gross paycheck earnings, W-2 box 1 wages, net pay, or taxable income. W-2 box 1 supplies a wage starting point for Form 1040 line 1a; other income can raise total income, and allowed Schedule 1 adjustments can lower AGI. The standard or itemized deduction is taken after AGI on the 2025 Form 1040, along with other applicable deductions, to reach taxable income. Tax credits generally affect the tax calculation rather than reducing AGI directly. Our gross-pay versus taxable-wages guide explains the first of those distinctions.
Modified AGI (MAGI) is a related but different figure. A particular tax benefit may require adding specified items back to AGI or calculating a program-specific modified amount. There is no single “MAGI” field on a pay stub, and it is unsafe to apply one benefit’s MAGI formula to another. Check the instructions for the exact credit, deduction, or program involved.
Why can’t a pay stub show your final AGI?
A pay statement is tied to one employer and one pay date. Even its YTD column may omit a second job, taxable bank interest, investment income, self-employment results, and return-level adjustments. Some payroll systems show “federal taxable wages” or “FIT wages,” but that is an employer wage-base label, not your total federal AGI. A pay stub might also show deductions that reduce take-home cash without reducing federal taxable wages. For example, income-tax withholding is a payment toward tax; it is not an AGI adjustment.
The YTD figure needs the right calendar year and pay date. A check paid in January 2026 generally belongs to the 2026 wage-reporting year even if the work occurred in December 2025; the employer’s W-2 follows the payment year under the IRS calendar-year reporting instructions. Also, year-end taxable benefits, corrections, or payroll changes may cause a final W-2 box 1 amount to differ from a December stub. Use the actual W-2 and corrected W-2, if issued, when preparing the return rather than treating an early YTD estimate as final. Our final-stub and W-2 reconciliation guide walks through such differences.
For income verification, a lender or agency may ask for recent stubs, a W-2, a tax return, or a tax transcript. Supply the document it requests. Do not relabel pay-stub YTD gross as “AGI” or create a stub to match a desired tax-return figure. A pay-stub income packet and a filed AGI answer different questions.
Which pay-stub or W-2 number belongs in the wage part of AGI?
For an employee with an ordinary Form W-2, the 2025 Form 1040 line 1a starts with the total of box 1 from all applicable W-2s, not the deposits, box 2 withholding, or automatically the stub’s YTD “gross.” The IRS’s 2025 W-2 instructions call box 1 taxable wages, tips, and other compensation. They exclude ordinary traditional 401(k) elective deferrals from box 1, while designated Roth 401(k) contributions remain included. Qualified benefits excluded under a section 125 cafeteria plan may also be absent from box 1 under the 2025 employer fringe-benefit guidance. The treatment depends on the actual plan and benefit; do not subtract every item labeled “pre-tax” twice.
Payroll withholding is separate. Federal income tax withheld appears in W-2 box 2 and on the payments portion of Form 1040, not as a deduction from W-2 box 1 to reach AGI. Social Security and Medicare withholding likewise do not reduce AGI merely because they appear on a stub. An after-tax Roth 401(k) deferral may reduce net cash but does not reduce box 1 wages. See the Roth versus traditional 401(k) pay-stub guide for that distinction. Some earnings, such as a taxable fringe benefit, can increase W-2 box 1 without a matching cash deposit.
If you have multiple W-2s, add the appropriate box 1 amounts for Form 1040 line 1a, while checking the return instructions for any special wage categories. A contractor’s 1099 income is not W-2 box 1 wages and may need other schedules. The article’s example assumes one W-2, no special wage categories, no spouse, and no other return items except the ones shown.
How do gross pay, W-2 wages, and AGI fit together? A 2025 example
Assume a fictional U.S. employee earned $70,000 of cash compensation paid during 2025. The employer’s genuine payroll records show a $4,000 traditional 401(k) salary deferral and $2,000 of qualified, excluded section 125 health-plan salary reduction. Assume no other taxable payroll additions or exclusions. The simplified 2025 W-2 box 1 is $70,000 − $4,000 − $2,000 = $64,000. These reductions have already been reflected in box 1; they are not subtracted again on Form 1040 line 10.
The person also has $350 of taxable bank interest, so 2025 Form 1040 line 9 total income is $64,000 + $350 = $64,350. Suppose the person made a $1,000 traditional IRA contribution outside payroll and is eligible to deduct the full amount under the applicable 2025 rules. That deduction is an adjustment on 2025 Schedule 1 line 20; Schedule 1 line 26 passes its $1,000 total to Form 1040 line 10. AGI on line 11a, repeated on line 11b, is $64,350 − $1,000 = $63,350. Traditional IRA deductibility depends on facts including retirement-plan coverage and income; the IRS’s IRA deduction guidance explains the limits. If this person were not allowed the assumed deduction, this example’s AGI would instead be $64,350.
| Stage | Calculation or source | Amount |
|---|---|---|
| Cash compensation | 2025 employer payroll | $70,000 |
| Traditional 401(k) deferral | Excluded from W-2 box 1 | − $4,000 |
| Qualified section 125 benefit | Excluded from W-2 box 1 | − $2,000 |
| W-2 box 1 wages | 2025 Form 1040 line 1a | $64,000 |
| Taxable bank interest | 2025 Form 1040 line 2b | + $350 |
| Total income | 2025 Form 1040 line 9 | $64,350 |
| Assumed deductible IRA contribution | 2025 Schedule 1 line 20; 1040 line 10 | − $1,000 |
| Adjusted gross income | 2025 Form 1040 lines 11a and 11b | $63,350 |
The example deliberately separates payroll exclusions from a return-level adjustment. A different plan, taxable benefit, spouse’s income, second job, investment transaction, business activity, or disallowed IRA deduction would change the result. Verify each source document and the tax-year rules before applying any number to a real return.
Which familiar pay-stub deductions do—and do not—change AGI?
A deduction line on a stub does not tell you, by itself, whether it changes AGI. A traditional 401(k) deferral generally reduces W-2 box 1 before the return starts; a Roth 401(k) deferral does not. A qualifying section 125 benefit may be excluded from wages, while an after-tax insurance payment or employee loan repayment may simply reduce take-home cash. Employer withholding of federal income tax, Social Security tax, or Medicare tax is not a Schedule 1 AGI adjustment. Our gross-to-net-pay guide shows why money withheld from a check and income excluded from taxable wages are different.
At the return stage, Schedule 1 lists potential adjustments such as an eligible HSA deduction, deductible part of self-employment tax, eligible traditional IRA deduction, and eligible student-loan interest. Each has its own conditions and limits; the mere presence of an account, contribution, loan payment, or payroll entry does not guarantee a deduction. In particular, contributions made through a qualifying employer HSA salary-reduction arrangement are generally already excluded from W-2 box 1 and should not be deducted a second time as a personal HSA contribution. The HSA pay-stub guide explains that reconciliation.
The standard deduction and itemized deductions are calculated after AGI on the 2025 Form 1040. A tax credit generally reduces tax liability rather than the AGI figure itself. Many eligibility rules use AGI or a specially defined MAGI, so do not assume that “lower net pay” automatically lowers a credit threshold or that an employer can compute a household’s eligibility from payroll alone.
Where do you find your actual AGI when someone asks for it?
If you have filed the return for the requested tax year, look at that year’s Form 1040, not a current pay stub. On the 2025 form, AGI is computed on line 11a and repeated on line 11b. The IRS’s general AGI help page calls this “line 11”; check the specific year’s form because labels can change. If you filed jointly, use the AGI from the joint return when a form asks for that return’s AGI.
If you cannot find the filed return, the IRS Individual Online Account can show prior-year AGI and downloadable tax transcripts; a mailed transcript is another option. A tax preparer or saved filing-software copy may also provide the filed return. For electronic filing, the IRS may ask a self-preparer to validate the return using prior-year AGI or a Self-Select PIN. That is the AGI from the prior filed return, not an annualized estimate from the latest pay stub. Follow the current IRS instructions for your filing situation rather than assuming a special zero-AGI rule applies.
If you need an estimate for tax planning before the year ends, collect all genuine pay and other income records, model expected W-2 box 1 wages, include other taxable income, and check eligible Schedule 1 adjustments. Label the result estimated AGI with its tax year and assumptions. Reconcile it to final W-2s, information returns, and the completed Form 1040 before using it as a filed number. An employer can provide accurate payroll records, but it cannot certify a worker’s entire personal AGI from its own pay statements.
Quick answers about AGI and pay stubs
Is YTD gross pay my AGI?
No. YTD gross is a payroll accumulation for one employer. AGI is an annual federal return amount that may include other income and permitted adjustments.
Is W-2 box 1 the same as AGI?
Not necessarily. W-2 box 1 is one component of Form 1040 wages. If there is other income or a permitted adjustment, AGI will differ. For a simple return with only box 1 wages and no adjustments, the amounts may happen to match.
Should I subtract taxes withheld from pay to calculate AGI?
No. Federal tax withholding is a tax payment reported elsewhere on Form 1040. Social Security and Medicare withholding also do not become AGI adjustments just because they reduce net pay.
Does a traditional 401(k) contribution lower AGI twice?
No. An eligible traditional 401(k) elective deferral is ordinarily excluded from W-2 box 1 already. Do not subtract it again as a Schedule 1 adjustment. A designated Roth 401(k) contribution remains in box 1.
Which line shows 2025 AGI?
On the 2025 Form 1040, line 11a computes AGI and line 11b repeats it on page two. Check the form for the tax year requested.
Can my employer give me my AGI for e-filing?
Your employer can supply payroll information and a W-2, but it cannot determine all the income and adjustments on your personal return. Use the prior-year filed Form 1040 or IRS tax records for an e-filing AGI request.
Primary sources checked October 5, 2026: IRS AGI guidance; 2025 Form 1040; 2025 Schedule 1; 2025 W-2/W-3 instructions; 2025 Publication 15-B; IRA deduction guidance; and IRS tax-record retrieval. Figures are fictional, and the $1,000 IRA deduction is an explicit eligibility assumption. Confirm your own tax year, filing status, eligibility, and final source documents.