2024 Irmaa Premium Brackets Chart. What are the expected income tax brackets for 2024? Cms publishes the amounts, which can be found in the current federal register each year.

To determine whether you are subject to irmaa charges, medicare uses the adjusted gross income you reported on your irs tax return two years ago. The irmaa is calculated on a sliding scale with five income brackets topping out at $500,000 and $750,000 for individual and joint filing, respectively.