Navigating Medicare can feel overwhelming, especially when unexpected costs like Income-Related Monthly Adjustment Amount (IRMAA) appear on your bill. At Hawaii SHIP, our mission is to educate and support the community so that kupuna and their families can make informed health coverage decisions.
IRMAA is an additional charge added to your Medicare Part B and Part D premiums if your income is above a certain threshold. This adjustment is not applied to everyone—only to individuals and couples whose modified adjusted gross income (MAGI) exceeds the limits set by Medicare.
For 2025, your IRMAA determination is based on your 2023 federal income tax return. That means even financial events from two years ago may affect what you pay today.
MAGI includes more than just wages. Here are some common income sources that may raise your Medicare costs:
Even a single financial event can push you into a higher income bracket and trigger IRMAA.
Income thresholds vary depending on your tax filing status:
Each status has its own brackets for determining IRMAA. The higher your MAGI, the higher your adjustment amount for both Part B and Part D.
While the Social Security Administration (SSA) determines the official brackets each year, here’s how it works:
This means two neighbors in Hawaii with the same Medicare coverage could pay different amounts based on their income.
If you receive a notice about IRMAA and believe it’s incorrect, you have options:
Understanding IRMAA is key to avoiding unexpected costs. At Hawaii SHIP, we offer free, unbiased counseling to Medicare beneficiaries, their families, and caregivers. If you have questions about your premiums, IRMAA, or how your income may affect your Medicare costs, reach out to our team for guidance.
Empower yourself with knowledge today—so you can enjoy tomorrow with peace of mind. 🌺
