Modified Adjusted Gross Income

Katelynn Minott, CPA & CEO July 11th, 2026

Modified adjusted gross income, or MAGI, is adjusted gross income with certain items added back for a specific tax calculation. For U.S. expats, MAGI can be higher than AGI when excluded foreign earned income, foreign housing amounts, tax-exempt interest, or other items must be included for a credit, deduction, or phaseout.

Why it matters for U.S. expats

MAGI can affect whether U.S. expats qualify for tax credits, deductions, retirement contributions, premium tax credits, and income-based phaseouts. It is especially important for taxpayers who claim the Foreign Earned Income Exclusion or foreign housing exclusion, because income excluded from regular taxable income may still be added back when MAGI is calculated for certain tax benefits.

Common questions

1. Is modified adjusted gross income the same as adjusted gross income?

No. Adjusted gross income starts with income reported on the tax return after certain adjustments. Modified adjusted gross income starts with AGI and then adds back specific items required for the tax rule being applied.

2. Does MAGI have one IRS definition?

No. MAGI is calculated differently depending on the credit, deduction, contribution limit, or phaseout involved.

3. Why does MAGI matter for U.S. expats?

MAGI can determine whether an expat qualifies for certain credits, deductions, IRA contributions, health insurance premium credits, or other income-based tax benefits.

4. Does the Foreign Earned Income Exclusion reduce MAGI?

Not always. For some tax calculations, foreign earned income excluded on Form 2555 must be added back when MAGI is calculated.

5. Does the Foreign Housing exclusion affect MAGI?

Yes, for some tax rules. Foreign housing exclusion or deduction amounts may need to be added back when calculating MAGI.

6. Can MAGI be higher than taxable income?

Yes. MAGI can be much higher than taxable income when excluded income or deductions are added back for a specific calculation.

7. Does MAGI affect the Child Tax Credit?

Yes. The Child Tax Credit and Credit for Other Dependents have income phaseout rules based on modified adjusted gross income.

8. Does MAGI affect IRA contributions?

Yes. MAGI can affect whether a taxpayer can deduct traditional IRA contributions or contribute to a Roth IRA.

9. Does MAGI affect Premium Tax Credit eligibility?

Yes. Premium Tax Credit eligibility uses household income, which is based on MAGI for the taxpayer, spouse if filing jointly, and certain dependents.

10. Does MAGI affect the Foreign Tax Credit?

The Foreign Tax Credit itself is calculated through Form 1116 and its limitation rules, not a simple MAGI threshold. MAGI can still matter elsewhere on the same return when credits, deductions, or phaseouts are being calculated.

11. Where can U.S. expats find MAGI on a tax return?

MAGI does not appear as one universal line on Form 1040. It is calculated using the worksheet or instructions for the specific credit, deduction, or tax rule involved.

12. What records help calculate MAGI for U.S. expats?

Keep the completed Form 1040, Schedule 1, Form 2555, foreign income records, housing exclusion or deduction details, tax-exempt interest records, Social Security statements, retirement contribution records, and any worksheets used for the relevant tax benefit.

When to get help

Professional guidance is important when:

You claim the Foreign Earned Income Exclusion or foreign housing exclusion.
You are trying to claim the Child Tax Credit or Credit for Other Dependents.
You made traditional IRA or Roth IRA contributions while living abroad.
You received advance Premium Tax Credit payments.
You have tax-exempt interest, Social Security benefits, or other income that may be added back.
You are close to an income phaseout threshold.
You need to compare tax outcomes with and without Form 2555.

Bright!Tax can calculate MAGI for the specific tax rule involved, identify expat add-backs, and make sure credits, deductions, and phaseouts are handled correctly. Get started with Bright!Tax.

Official sources

Reviewed by

Katelynn Minott, CPA & CEO

Last reviewed

July 2026

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