Home/Glossary/IRMAAGlossary · FinanceIRMAAIncome-Related Monthly Adjustment Amount. Surcharges on Parts B and D premiums for higher-income beneficiaries, based on MAGI from 2 years prior.Related TermsMedicare Savings Programs (MSP)Qualified Medicare Beneficiary (QMB)Specified Low-Income Medicare Beneficiary (SLMB)Qualifying Individual (QI)Modified Adjusted Gross Income (MAGI)Medicare Secondary Payer (MSP)QI Allotment← Back to glossary index