The main purpose of this legislation, known as the Medicare Protection Act of 2025, is to change how certain income is calculated for Medicare beneficiaries. Specifically, it aims to exclude income from the sale of a person's primary home when determining the income-related monthly adjustment amount (IRMAA) for Medicare. This adjustment affects how much some individuals pay for their Medicare coverage based on their income. Key provisions of the Act include a specific amendment to the Social Security Act.