Question

What is IRMAA, and how does it affect Medicare costs?

Answer

The Income-Related Monthly Adjustment Amount (IRMAA) is an added surcharge on Part B and Part D premiums for higher-income enrollees.

Last Updated May 20, 2026

About Mercer Advisors

We exist so you don’t have to worry about money. For more than 40 years, we’ve taken the sophisticated, time-tested approach that many ultra-high net worth individuals use to help manage their financial lives and made it accessible to more families.

Want to learn more about Mercer Advisors?