MAGI Calculator
Calculate Modified AGI and see impact on Roth IRA eligibility, ACA subsidies, and Medicare IRMAA surcharges.

What MAGI Calculator does
The MAGI Calculator helps users determine their Modified Adjusted Gross Income by walking through a detailed set of personal financial inputs. The output provides an accurate estimate of the MAGI figure based on the user's specific tax situation, revealing how changes in reported income affect eligibility for key federal and state benefits. This resource is particularly useful for individuals planning retirement savings or analyzing healthcare costs, as it clarifies potential impacts on Roth IRA contribution limits, Affordable Care Act subsidies, and Medicare IRMAA surcharges. The tool translates complex tax concepts into actionable figures for financial planning.
How to use the Financial Toolset MAGI Calculator
- 1
Enter your adjusted gross income and filing status into the calculator
- 2
Add additional income sources such as taxable interest, dividends, or capital gains
- 3
Include deductions and adjustments like student loan interest or IRA contributions
- 4
Review the calculated MAGI figure and see its impact on Roth IRA eligibility, ACA subsidies, and Medicare IRMAA surcharges
Best for
Individuals planning retirement savings or analyzing healthcare costs who need to understand how their reported income affects eligibility for Roth IRAs, ACA subsidies, or Medicare surcharges.
Limitations
- Results are estimates based on user-provided inputs
- Does not account for state-specific tax law variations
- No unit switching or currency conversion features available
MAGI Calculator FAQ
- What types of income are included in the MAGI calculation?
- The calculator includes adjusted gross income plus certain tax-exempt interest, deductions, and adjustments such as student loan interest and IRA contributions, following Modified Adjusted Gross Income guidelines for benefit eligibility.
- How does the MAGI result affect Roth IRA contribution limits?
- The calculated MAGI determines whether you are eligible to contribute to a Roth IRA and the amount you can contribute, as eligibility phases out at specific income thresholds based on filing status.
- Can this tool help estimate ACA health insurance subsidy eligibility?
- Yes, the MAGI figure is used by the Affordable Care Act to determine eligibility and the amount of premium tax credits and cost-sharing reductions for marketplace health insurance plans.
- Does the calculator consider Medicare IRMAA surcharges?
- The tool calculates MAGI which is the figure used to determine if Medicare Part B and Part D premiums include income-related monthly adjustment amounts based on your reported income.