Irmaa 2024 Charts. Irmaa is a surcharge that people with income above a certain amount must pay in addition to their medicare part b and part d premiums. 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.

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 income on your 2022 irs tax return (filed in 2023) determines the irmaa you pay in 2024.