Official government resource · SSA / CMS

IRMAA — Income-Related Monthly Adjustment Amount

How Social Security calculates higher Part B and Part D premiums for higher-income beneficiaries.

Publisher
SSA / CMS
Format
PDF
Last reviewed
January 15, 1970

What it is

IRMAA is an income-based surcharge added to standard Part B and Part D premiums. SSA determines it each year using your IRS-reported income from two years earlier (MAGI). Life-changing events — retirement, divorce, death of a spouse — can qualify for reconsideration via form SSA-44.

Who should read this

  • Higher-income beneficiaries reviewing their premium notice.
  • Anyone who has retired or had a major income change in the past two years.
  • People considering Roth conversions or capital-gains events near age 63.

Key topics covered

IRMAA bracketsTwo-year lookbackForm SSA-44 appealsLife-changing events

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