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AGI

Estimate your Adjusted Gross Income (AGI) by inputting gross earnings and above-the-line deductions.

Filing status & gross income

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$

Above-the-line deductions (Schedule 1)

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Adjusted Gross Income (AGI)

$70,000.00

Income reduced by 10.3% via deductions

Gross income composition

  • Adjusted Gross Income (AGI)$70,000.0089.7%
  • Above-the-line deductions$8,000.0010.3%

Total gross income

$78,000.00

Form 1040 Line 9

Total adjustments

$8,000.00

Schedule 1 Line 26

Estimated tax savings

$1,760.00

Marginal bracket: 22%

Standard deduction

$15,000.00

For Single

Taxable income

$55,000.00

AGI minus standard deduction

Estimated federal tax

$7,014.00

2025 IRS brackets

How Adjusted Gross Income (AGI) is calculated

Three primary steps from gross earnings to your final AGI and tax impact.

  1. Sum total gross income

    Gross Income=W-2 Wages+Interest+Business+Capital Gains+Retirement+Other\text{Gross Income} = \text{W-2 Wages} + \text{Interest} + \text{Business} + \text{Capital Gains} + \text{Retirement} + \text{Other}

    Your combined earnings across all sources equal $78,000.00. Capital losses are limited to a maximum deduction of $3,000 against ordinary income ($1,500 if married filing separately).

  2. Aggregate above-the-line deductions

    Total Adjustments=∑Schedule 1 Deductions\text{Total Adjustments} = \sum \text{Schedule 1 Deductions}

    Eligible adjustments total $8,000.00, including retirement contributions, HSA deductions, student loan interest, and deductible self-employment tax.

  3. Subtract adjustments from gross income

    AGI=Total Gross Income−Total Adjustments\text{AGI} = \text{Total Gross Income} - \text{Total Adjustments}

    $78,000.00 minus $8,000.00 yields an Adjusted Gross Income of $70,000.00.

  4. Determine taxable income and estimated tax

    Taxable Income=max⁡(0,AGI−Standard Deduction)\text{Taxable Income} = \max(0, \text{AGI} - \text{Standard Deduction})

    After applying the $15,000.00 standard deduction for your filing status, your taxable income is $55,000.00, generating an estimated $7,014.00 in federal tax.

Federal income tax brackets, standard deductions ($$15,000.00 for your status), student loan phaseout ranges, and educator expense limits reflect the 2025 tax year. AGI serves as the threshold for numerous tax credits, Roth IRA eligibility, and itemized deduction floors.
Report tool

Understanding Adjusted Gross Income (AGI)

Adjusted Gross Income (AGI) is the foundational benchmark of the United States federal tax system. Defined under Internal Revenue Code Section 62, AGI represents your total gross earnings from all taxable sources minus specific allowable adjustments, commonly referred to as above-the-line deductions.

AGI is determined on page 1 of IRS Form 1040 before you claim either the standard deduction or itemized deductions on Schedule A. It serves as the gateway metric that dictates your eligibility for key tax credits, Roth IRA contributions, and deduction limitations throughout the 2025 tax year. If you receive freelance or contractor payments alongside salary, pairing this with the 1099 tax calculator helps project your self-employment tax obligations.

The AGI Formula

Calculating AGI involves a straightforward two-part mathematical relationship between gross revenue and qualifying adjustments:

Adjusted Gross Income (AGI)=Total Gross Income−Above-the-Line Deductions\text{Adjusted Gross Income (AGI)} = \text{Total Gross Income} - \text{Above-the-Line Deductions}

Gross income aggregates all worldwide taxable earnings, including:

Gross Income=Wwages+Iinterest/div+Bbusiness+max⁡(−$3,000,CGnet)+Rpensions+Oother\text{Gross Income} = W_{\text{wages}} + I_{\text{interest/div}} + B_{\text{business}} + \max(-\$3{,}000, CG_{\text{net}}) + R_{\text{pensions}} + O_{\text{other}}

Once total income is established, allowable Schedule 1 adjustments are deducted in full:

Total Adjustments=DIRA+DHSA+DStudentLoan+DEducator+12SE Tax+DSE Health+DSE Ret+DOther\text{Total Adjustments} = D_{\text{IRA}} + D_{\text{HSA}} + D_{\text{StudentLoan}} + D_{\text{Educator}} + \frac{1}{2}\text{SE Tax} + D_{\text{SE Health}} + D_{\text{SE Ret}} + D_{\text{Other}}

Gross Income vs. AGI vs. Modified AGI (MAGI)

Navigating the differences between gross income, AGI, and Modified AGI (MAGI) is critical for tax planning:

  • Gross Income: All income earned before any deductions or adjustments. Employer pre-tax payroll deductions like health insurance premiums and contributions calculated with a 401(k) calculator are already excluded from Box 1 of your W-2.
  • Adjusted Gross Income (AGI): Gross income minus specific above-the-line adjustments listed on Form 1040 Schedule 1.
  • Modified AGI (MAGI): AGI with certain deductions added back (such as student loan interest or foreign earned income exclusions). MAGI is used to evaluate phaseout limits for education accounts, college planning evaluated with a 529 plan calculator, and Roth IRA direct contribution caps.
  • Taxable Income: AGI minus the standard deduction (or itemized deductions) and the Section 199A Qualified Business Income deduction. This is the actual amount subject to marginal tax brackets.

Key Above-the-Line Deductions Explained

Above-the-line deductions are exceptionally valuable because they reduce your AGI directly, regardless of whether you claim the standard deduction or itemize deductions. Major 2025 adjustments include:

  • Traditional IRA Contributions: Deductible contributions made to a traditional individual retirement account, subject to workplace retirement plan coverage and income phaseouts.
  • Health Savings Account (HSA) Deductions: Contributions made directly to an HSA with after-tax funds for high-deductible health plan (HDHP) policyholders.
  • Student Loan Interest: Up to $2,500 of interest paid on qualified higher education loans, phasing out at higher income thresholds.
  • Educator Expenses: Up to $300 for single eligible K-12 educators ($600 for married couples filing jointly if both spouses are educators).
  • Deductible Self-Employment Tax: Half of the self-employment tax (Social Security and Medicare) calculated on Schedule SE.
  • Self-Employed Health Insurance & Retirement: Premiums paid for medical and dental coverage, as well as contributions to SEP-IRA, SIMPLE IRA, or Solo 401(k) plans.
  • Alimony Paid (Pre-2019 Decrees): Court-ordered spousal maintenance paid under agreements finalized before 2019, which can be estimated using our alimony calculator.

Understanding your post-tax disposable income after all mandatory withholdings makes it easier to allocate funds across essential expenses using a 50/30/20 rule budget calculator, especially for workers transitioning from hourly shifts estimated via a 12-hour shift pay calculator.

Worked Example of AGI Calculation

Consider a single taxpayer in 2025 with the following annual financial profile:

  • W-2 Wages: $85,000
  • Taxable Interest & Dividends: $1,500
  • Net Capital Gains: $2,000
  • Traditional IRA Contribution: $4,000
  • HSA Direct Contribution: $3,000
  • Student Loan Interest Paid: $1,200

First, aggregate all gross earnings:

Gross Income=$85,000+$1,500+$2,000=$88,500\text{Gross Income} = \$85{,}000 + \$1{,}500 + \$2{,}000 = \$88{,}500

Next, calculate allowable above-the-line adjustments. With preliminary MAGI at $81,500 ($88,500 minus $7,000 in IRA and HSA contributions), the student loan deduction enters the single phaseout window ($80,000 to $95,000), reducing the allowable deduction by 10% to $1,080:

Total Adjustments=$4,000+$3,000+$1,080=$8,080\text{Total Adjustments} = \$4{,}000 + \$3{,}000 + \$1{,}080 = \$8{,}080

Finally, compute the resulting AGI:

AGI=$88,500−$8,080=$80,420\text{AGI} = \$88{,}500 - \$8{,}080 = \$80{,}420

Subtracting the 2025 single standard deduction of $15,000 produces a taxable income of $65,420, saving this taxpayer over $1,770 in federal income taxes compared to filing without above-the-line adjustments.

Frequently asked questions

Where do I find my AGI on my tax return?
Your Adjusted Gross Income appears on Line 11 of IRS Form 1040 for recent tax years. On prior year returns (2018), it appeared on Line 7, and on older forms before 2018, on Line 37.
What tax year limits does this calculator use?
This calculator reflects the 2025 tax year parameters, including updated standard deductions ($15,000 single, $30,000 married filing jointly), student loan interest phaseout brackets, educator expense limits, and federal marginal tax brackets.
Can my AGI be negative?
While business losses and capital loss allowances can reduce your total income significantly, AGI is generally reported as zero on Form 1040 when deductions exceed total gross revenue.
Are 401(k) contributions considered an above-the-line deduction?
Traditional employer-sponsored 401(k) contributions are pre-tax payroll salary deferrals. They reduce Box 1 taxable wages on your W-2 before gross income is calculated, rather than appearing as a Schedule 1 above-the-line adjustment.
Why is AGI important for medical and charitable deductions?
AGI serves as the percentage threshold for itemized deductions on Schedule A. For example, unreimbursed medical and dental expenses are deductible only to the extent they exceed 7.5% of your AGI.
Is student loan interest fully deductible for everyone?
No. The student loan interest deduction is capped at $2,500 per year and begins phasing out at higher MAGI thresholds ($80,000 to $95,000 for single filers; $165,000 to $195,000 for married couples filing jointly in 2025). Married individuals filing separately cannot claim this deduction.

Resources and references

The formulas and methods in this calculator were checked against these independent sources.