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Original Medicare Costs

Part B costs for those with higher incomes

You might pay a higher Part B premium depending on your income. Learn how the Income-Related Monthly Adjustment Amount is calculated and how to appeal if needed.

Last Updated: April 2, 2025

The Medicare Income-Related Monthly Adjustment Amount (IRMAA) The Income-Related Monthly Adjustment Amount (IRMAA) is an amount you may pay in addition to your Part B or Part D premium if your income is above a certain level. The Social Security Administration (SSA) determines if you owe an IRMAA based on the income you reported on your IRS tax return two years prior. If you are expected to pay IRMAA, SSA will notify you that you have a higher Part B or Part D premium. If you have had certain life changing events in the past two years, you can ask for a new assessment. is an amount you may pay in addition to your Part B Part B, also known as medical insurance, is the part of Medicare that covers most medically necessary doctors’ services, preventive care, hospital outpatient care, durable medical equipment (DME), laboratory tests, x-rays, mental health services, and some home health care and ambulance services. or Part D Part D, also known as the Medicare prescription drug benefit, is the part of Medicare that provides prescription drug coverage. Part D is offered through private companies either as a stand-alone plan, for those enrolled in Original Medicare, or as a set of benefits included with a Medicare Advantage Plan. premium if your income is above a certain level. The Social Security Administration (SSA) The Social Security Administration is the United States government agency responsible for managing various programs, including Medicare, Social Security Disability Insurance (SSDI), Supplemental Security Income (SSI), and Extra Help. sets four income brackets that determine your (or you and your spouse’s) IRMAA. SSA determines if you owe an IRMAA based on the income you reported on your IRS tax return two years prior, meaning two years before the year that you start paying IRMAA. The income that counts is the adjusted gross income you reported plus other forms of tax-exempt income.

If you are expected to pay IRMAA, SSA will notify you that you have a higher Part B premium.

Your premium will change based on income as follows:

Your annual income

Your annual income

Individuals

Couples

Your monthly premium in 2025

Equal to or below $106,000

Equal to or below $212,000

$185

$106,001 -$133,000

$212,001 – $266,000

$259

$133,001 – $167,000

$266,001 – $334,000

$370

$167,001 – $200,000

$334,001 – $400,000

$480.90

$200,001 – $499,999

$400,001 – $749,999

$591.90

$500,000 and above

$750,000 and above

$628.90

If you believe you should not pay IRMAA, your circumstances have changed, or your IRMAA was miscalculated, you have the right to request that SSA lower or eliminate your premium increase. You will have to submit evidence whether you are appealing SSA’s original determination or requesting a new determination.

Glossary Terms

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