Medicare surcharges, specifically the Income-Related Monthly Adjustment Amount (IRMAA), appear on the monthly Medicare bill as an additional charge. (if you pay Medicare premiums directly, otherwise, it's deducted from your Social Security check. This charge is added to the standard Medicare premiums for Part B and Part D, reflecting the higher costs for beneficiaries with higher incomes. The surcharge is calculated based on the beneficiary's modified adjusted gross income (MAGI) from two years prior, and it is applied to both Part B and Part D premiums. Beneficiaries should be aware of these surcharges and plan accordingly to manage their Medicare costs effectively
