MAGI Calculator

Written by Great Medico

Updated September 25, 2026 •2 min read

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When a finance decision has several moving parts, transparent arithmetic matters. MAGI Calculator builds an adjusted-income estimate from the income and adjustment categories displayed on the form using the inputs you provide rather than an unstated market forecast.

What this calculator does

MAGI Calculator builds an adjusted-income estimate from the income and adjustment categories displayed on the form. The visible inputs are agi and the add-back fields shown, including foreign-income, benefit, self-employment-tax, ira, passive-income, and other adjustments. Its result is driven by those values, so the calculation can be reproduced or stress-tested without relying on a hidden live-data feed.

How to use it

Enter AGI and the add-back fields shown, including foreign-income, benefit, self-employment-tax, IRA, passive-income, and other adjustments. Keep all monetary inputs in the same currency; the currency selector formats results and does not perform foreign-exchange conversion. Before calculating, recheck Adjusted gross income (AGI), Foreign-earned income, Foreign housing cost against the source values you intend to model. Use the labels on MAGI Calculator as the source of truth and recheck any prefilled value before relying on the result.

How the calculation works

For AGI, the calculator combines the entered income components and subtracts the entered adjustment items. For MAGI, it starts from AGI and adds back the specific modification fields shown on that calculator. MAGI Calculator applies that relationship only to the inputs represented on its form. If the result looks surprising, verify the entered values, units, and signs before interpreting the number.

Example

If total entered income is $90,000 and the displayed above-the-line adjustments total $7,000, the simplified AGI is $83,000. A MAGI calculation would then add back only the modification items entered on its form. The example is a math check for MAGI Calculator; replace the sample values with your own inputs rather than treating the example as a target or recommendation.

How to interpret the result

AGI and MAGI are intermediate tax figures used by many tax rules, but different programs can define MAGI differently. The calculator is most useful for organizing the displayed components, not for deciding eligibility by itself. The result describes the entered scenario; it does not replace the broader legal, tax, lending, or investment context.

Limitations and notes

Tax definitions and allowable adjustments change by year, filing situation, and program. The calculator includes only the categories displayed on the form and cannot determine whether a particular amount is legally deductible or must be added back. Treat the output as an estimate built from the displayed inputs, not as a guarantee of a future payment, tax, return, approval, or legal obligation.