IRMAA is an acronym for Income-Related Monthly Adjustment Amount. As the name implies, IRMAA is an increase to an individual's premium if his or her income meets a federal threshold. IRMAA applies if you meet the following criteria:
- <li> You are enrolled in Medicare Part B or Medicare Prescription Drug plan Part D.
- <li> You have a higher income, as defined under the Affordable Care Act in 2011.