Adjusted Gross Income (AGI) Calculator

Enter your total income and adjustments to calculate your AGI, estimated taxable income, marginal tax bracket, and effective tax rate.

Created by Luis GonzalezLast updated: 2026-06-08

How to Use This Calculator

1
Enter Total Income ($)
Input your total income from all sources before any deductions, including wages, interest, dividends, and capital gains.
2
Provide Adjustments to Income ($)
Enter any allowable 'above-the-line' deductions, such as student loan interest, HSA contributions, or IRA contributions.
3
Review Your Results
The calculator displays your AGI, estimated taxable income (after the 2025 standard deduction of $15,000), marginal tax bracket, estimated federal tax, and effective tax rate. The Tax Savings insight shows how much your adjustments save in federal tax.

Example Calculation

A single filer estimates their 2025 AGI with $80,000 total income and $5,000 in above-the-line deductions.

Total Income ($)

80,000

Adjustments to Income ($)

5,000

Results

AGI

$75,000

Taxable Income

$60,000

Marginal Bracket

22%

Federal Tax

$8,114

Effective Rate

13.52%

Insights card shows $5,000 in adjustments saves $1,100 in federal tax.

Tips

Maximize Above-the-Line Deductions

IRA contributions (up to $7,000 for 2025, $8,000 if 50+), HSA contributions ($4,300 individual/$8,550 family), and student loan interest (up to $2,500) all directly reduce AGI. In the example, the $5,000 adjustment saves $1,100 in tax — a 22% return.

Understand AGI Phase-Out Thresholds

Many tax benefits phase out at specific AGI levels. For 2025 single filers, the student loan interest deduction phases out at $80,000-$95,000 AGI, and Roth IRA eligibility phases out at $150,000-$165,000. Knowing your AGI helps you plan strategically.

Keep Records for All Adjustments

Maintain records for all adjustments: Form 1098-E for student loan interest, contribution statements for HSAs/IRAs, and Form 1099-SA for HSA distributions. The IRS requires documentation to substantiate these deductions.

Calculating Your Adjusted Gross Income for Tax Planning

The AGI Calculator determines your Adjusted Gross Income and estimates your federal tax liability using 2025 tax brackets.

For a single filer with $80,000 total income and $5,000 in above-the-line deductions, AGI is $75,000.

After the $15,000 standard deduction, taxable income is $60,000, placing you in the 22% marginal bracket with $8,114 estimated federal tax and a 13.52% effective rate.

The $5,000 in adjustments saves $1,100 in federal tax.

Why Your AGI Drives Tax Outcomes

Your AGI isn't just another number — it's the gateway to tax benefits and a key determinant of your tax burden.

A lower AGI can unlock credits like the Earned Income Tax Credit or Child Tax Credit, and increase the deductibility of expenses like medical costs (deductible only above 7.5% of AGI).

For the example $75,000 AGI, medical expenses above $5,625 would be deductible — if AGI were $80,000 without adjustments, the threshold would be $6,000.

The AGI Formula

Adjusted Gross Income = Total Income - Adjustments to Income

Total Income includes wages, salaries, interest, dividends, capital gains, business income, and retirement distributions.

Adjustments to Income are above-the-line deductions: traditional IRA contributions, student loan interest, HSA contributions, self-employment tax deductions, and educator expenses.

💡 After calculating your AGI, see how it impacts your state taxes with our State Income Tax Calculator.

Worked Example: Single Filer with 2025 Brackets

A single taxpayer with various income sources and adjustments:

Step 1 — Total Income:

Wages: $70,000
Interest Income: $2,000
Capital Gains: $8,000
Total Income = $80,000

Step 2 — Adjustments to Income:

Student Loan Interest: $2,500
Traditional IRA Contribution: $2,500
Total Adjustments = $5,000

Step 3 — Calculate AGI:

AGI = $80,000 - $5,000 = $75,000

Step 4 — Estimate Federal Tax (2025 brackets):

Taxable Income = $75,000 - $15,000 (standard deduction) = $60,000
First $11,925 at 10% = $1,192.50
$11,926-$48,475 at 12% = $4,386.00
$48,476-$60,000 at 22% = $2,535.50
Estimated Federal Tax = $8,114
Effective Tax Rate = 13.52%

The $5,000 in adjustments saves $1,100 in federal tax ($9,214 without adjustments vs $8,114 with).

💡 If you're self-employed, your AGI calculation includes additional deductions. Our Self-Employment Tax Calculator can help estimate your FICA contributions.

AGI Phase-Out Thresholds for 2025

Your AGI determines eligibility for key tax benefits.

For single filers:

Student Loan Interest Deduction: Phases out at $80,000-$95,000 AGI (example's $75,000 AGI qualifies fully)
Roth IRA Contributions: Phase out at $150,000-$165,000 AGI
Child Tax Credit: Begins phasing out at $200,000 AGI
Medical Expense Deduction: Only amounts exceeding 7.5% of AGI ($5,625 at $75,000 AGI)
Premium Tax Credits (ACA): Based on AGI relative to federal poverty level

Proactive strategies like maximizing pre-tax retirement contributions can keep your AGI below critical thresholds, unlocking additional savings beyond the direct tax deduction.

Frequently Asked Questions

What is Adjusted Gross Income (AGI) and why does it matter?

AGI is your total gross income minus specific above-the-line deductions. It's the foundation for most tax calculations — determining eligibility for credits (Child Tax Credit, Earned Income Tax Credit), deductions (medical expenses above 7.5% of AGI), and contribution limits (Roth IRA). In the example, a $75,000 AGI puts you in the 22% marginal bracket with $8,114 estimated federal tax on $60,000 taxable income.

What are common above-the-line deductions that reduce AGI?

The most common are: traditional IRA contributions (up to $7,000/$8,000 for 2025), student loan interest (up to $2,500), HSA contributions ($4,300 individual/$8,550 family), self-employment tax deduction (50% of SE tax), and educator expenses (up to $300). In the example, $5,000 in deductions reduces AGI from $80,000 to $75,000, saving $1,100 in federal tax.

How does the calculator estimate taxable income and tax?

It subtracts the 2025 standard deduction ($15,000 for single filers) from your AGI to get taxable income, then applies the 2025 federal tax brackets (10% up to $11,925, 12% up to $48,475, 22% up to $103,350, etc.). For the example, $75,000 AGI - $15,000 = $60,000 taxable. Tax: $1,192.50 (10%) + $4,386 (12%) + $2,535.50 (22%) = $8,114.

What tax brackets does this calculator use?

2025 single filer federal brackets: 10% ($0-$11,925), 12% ($11,926-$48,475), 22% ($48,476-$103,350), 24% ($103,351-$197,300), 32% ($197,301-$250,525), 35% ($250,526-$626,350), 37% ($626,351+). Standard deduction: $15,000. These are the most recent confirmed IRS figures.

How does AGI affect eligibility for tax credits?

Many credits have AGI phase-outs. For 2025 single filers: Child Tax Credit begins phasing out at $200,000 AGI, student loan interest deduction at $80,000, Roth IRA contributions at $150,000, and the Earned Income Tax Credit has varying thresholds by family size. Reducing AGI through above-the-line deductions can keep you below these cutoffs.