Is Irmaa indexed?
This IRMAA surcharge is in addition to the standard Part B premium and any premium associated with their Part D plan. 2020 IRMAA amounts were based on a beneficiary's reported income from 2018. In 2020, the income brackets that determined Medicare IRMAA costs were indexed according to inflation.
Do Irmaa brackets change?
If your income two years ago was higher and you don't have a life-changing event that makes you qualify for an appeal, you will pay the higher Medicare premiums for one year. IRMAA is re-evaluated every year as your income changes.