42 CFR § 408.28 - Increased premiums due to the income-related monthly adjustment amount (IRMAA).
---
identifier: "/us/cfr/t42/s408.28"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "42 CFR § 408.28 - Increased premiums due to the income-related monthly adjustment amount (IRMAA)."
title_number: 42
title_name: "Public Health"
section_number: "408.28"
section_name: "Increased premiums due to the income-related monthly adjustment amount (IRMAA)."
chapter_name: "CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "B"
subchapter_name: "MEDICARE PROGRAM"
part_number: "408"
part_name: "PREMIUMS FOR SUPPLEMENTARY MEDICAL INSURANCE"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 1302 and 1395hh."
regulatory_source: "52 FR 48115, Dec. 18, 1987, unless otherwise noted."
cfr_part: "408"
---
# 408.28 Increased premiums due to the income-related monthly adjustment amount (IRMAA).
Beginning January 1, 2007, Medicare beneficiaries must pay an income-related monthly adjustment amount in addition to the Part B (SMI) standard monthly premium, plus any applicable increase for late enrollment or reenrollment, if the beneficiary's modified adjusted gross income exceeds the threshold amounts specified in 20 CFR 418.1115.
[73 FR 36469, June 27, 2008]