Which of the following is necessary for determining health insurance eligibility under MAGI?

Determining health insurance eligibility under Modified Adjusted Gross Income (MAGI) primarily involves assessing household income. MAGI is a specific calculation used by the government to determine an individual's eligibility for various assistance programs, including Medicaid and premium tax credits for health insurance purchased through the marketplace.

Household income under MAGI is calculated by taking your adjusted gross income (AGI) and adding back certain deductions, such as tax-exempt interest, foreign earned income, and certain Social Security benefits. This comprehensive income assessment ensures that all relevant sources of income are considered when evaluating if a family or individual qualifies for health benefits.

The other options—investment portfolio, trust account values, and annual savings account balance—do not directly impact MAGI calculations. Investment portfolios and trust accounts may contribute to overall wealth but do not count as income for MAGI purposes. Similarly, an annual savings account balance reflects assets rather than income and is not included when determining eligibility for health insurance.

Thus, the focus on household income is key to understanding eligibility under MAGI, making it the necessary component in this context.