What are Medicare Part D IRMAA and PART B IRMAA?

What are Medicare Part D IRMAA and PART B IRMAA?

The income-related monthly adjustment amount, or IRMAA, is a surcharge that high-income people may pay in addition to their Medicare Part B and Part D premiums.  In the Bay Area, it’s not uncommon for people to have this IRMAA surcharge applied to their Medicare premiums because we have higher incomes than many places in the country.  I know it doesn’t seem fair, because our cost of living is much higher too.  I don’t make the rules, I just relay them…:)


Social Security makes the determination about whether you’re subject to IRMAA based on your income reported on your tax return from two years ago. For example, your 2021 premiums are based on your 2019 tax return, assuming you have already filed your 2020 return.  The IRMAA is calculated and adjusted each year.  For Part B IRMAA, Social Security collects this amount directly, either by deduction to your Social Security check, or by invoicing you for three months at a time.


The income brackets that Social Security uses to determine the IRMAA are as follows:


Single Married Filing Jointly Married Filing Separately Part B Premium Part D IRMAA
$88,000 or less $176,000 or less $88,000 or less $148.50 $0 + your plan premium
$88,001 to $111,000 $176,001 to $222,000 N/A $207.90 $12.30  + your plan premium
$111,001 to $138,000 $222,001 to $276,000 N/A $297.00 $31.80 + your plan premium
$138,001 to $165,000 $276,001 to $330,000 N/A $386.10 $51.20  + your plan premium
$165,001 and under $500,000 $330,001 and under $750,000 $88,001 and under $412,000 $475.20 $70.70 + your plan premium
$500,000 or above $750,000 and above $412,000 and above $504.90 $77.10 + your plan premium


What if you don’t agree with the number they calculate or if you no longer make this amount?

It is not uncommon to make less money after you retire, so if Social Security is charging you based on your previous employment amount, you can appeal their decision and have them review your account in order to lower the IRMAA.  Many of our clients have been able to get their amounts adjusted to the standard rate or a lower bracket after retiring.  On the letter they provide you, they advise you where to call in order to appeal it.  You can always call your local Social Security office.


IRMAA on Part D premiums are typically collected by the Part D Insurance Carrier, not by Social Security. They will add the amount to your Part D premium.


If you are confused by this information, you are not alone!  So many folks coming into the Medicare system are very confused by all of this information.  After all, it’s new to you so don’t be so hard on yourself.


Medicare Webinars!  To learn more details about Medicare, join our free webinars or if you would like to schedule a free consultation, please contact us at michele@mcInsuranceServices or 408-848-2271.  Our services are always free!

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