The income used to determine IRMAA is your Modified Adjusted Gross Income (MAGI) — which is your AGI plus tax-exempt interest and dividends from muni bonds — fromtwo years ago. Your 2022 MAGI determines your IRMAA in 2024. Your 2023 MAGI determines your IRMAA in 2025. Your 2024 MAGI ...
Medicare Tax Rates TheMedicare taxrate is 1.45% for the employee and 1.45% for the employer for a total of 2.9% in 2023 and 2024.5Employers are responsible for withholding the 0.9% Additional Medicare Tax on an employee's wages that exceed $200,000 in a calendar year for an individual and...