Medicare Irmaa Brackets 2024. If you have medicare part b and/or medicare part d prescription drug coverage, you could owe a monthly surcharge based on an income related monthly adjustment amount (irmaa). 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 government adjusts the income brackets every year to reflect changes in the cost of living.