20 CFR § 418.1101 - What is the income-related monthly adjustment amount?

---
identifier: "/us/cfr/t20/s418.1101"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "20 CFR § 418.1101 - What is the income-related monthly adjustment amount?"
title_number: 20
title_name: "Employees' Benefits"
section_number: "418.1101"
section_name: "What is the income-related monthly adjustment amount?"
chapter_name: "SOCIAL SECURITY ADMINISTRATION"
part_number: "418"
part_name: "MEDICARE SUBSIDIES"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
regulatory_source: "70 FR 77675, Dec. 30, 2005, unless otherwise noted."
cfr_part: "418"
---


# 418.1101 What is the income-related monthly adjustment amount?

(a) The income-related monthly adjustment amount is an amount that you will pay in addition to the Medicare Part B standard monthly premium plus any applicable increase in that premium as described in 42 CFR 408.22 for your Medicare Part B coverage when your modified adjusted gross income is above the threshold described in § 418.1105.

(b) Your income-related monthly adjustment amount is based on your applicable modified adjusted gross income as described in § 418.1115 and your tax filing status.

(c) We will determine your income-related monthly adjustment amount using the method described in § 418.1120.

[71 FR 62931, Oct. 27, 2006, as amended at 78 FR 57259, Sept. 18, 2013]