Part B costs, deductibles and IRMAA surcharges will increase about 6% next year.
By David Enna, Tipswatch.com
Less than a month ago, U.S. retirees collecting Social Security learned their benefits will be increasing 3.2% beginning in January. That was the good news. The bad news is that costs for Medicare copayments and deductibles will be rising at a higher rate, about 6%.
Those costs were revealed in a little-noticed press release on Oct. 12 from the Centers for Medicare & Medicaid Services. It revealed the 2024 premiums, deductibles, and coinsurance amounts for Medicare Part A and Part B programs, and the 2024 income-related monthly adjustment amounts (IRMAA) for Parts B and D.
Any day now, if you are on Medicare, you will get a letter from CMS informing you of these new premium and deductible costs for 2024. If you planned poorly, you may be meeting up with IRMAA, and you really don’t want to meet IRMAA. These surcharges can be lofty, so it’s smart to plan ahead to limit these costs.
Let’s dive into the key Medicare changes for 2024.
Part A: Hospital insurance
Most people who reach age 65 go on Medicare Part A, even if they are still working. Medicare Part A covers inpatient hospital, skilled nursing facility and some home health care services. About 99% of Medicare beneficiaries do not have a Part A premium since they have at least 40 quarters of Medicare-covered employment.
Although coverage is generally free, Part A has some sizable deductibles and coinsurance costs, and those will be rising 2% in 2024:
Keep in mind that most people on Medicare have a Medigap or Medicare Advantage plan that will cover all or most of the Part A deductible and coinsurance amounts. For example, all standardized Medicare Supplement (Medigap) plans, A through N, provide coverage for Part A coinsurance, and most also cover all or most of the Part A deductible costs.
Part B: Medical insurance
Medicare Part B can be described as covering “outpatient services,” things like doctor visits, some lab tests, an annual wellness exam, diabetes screenings, etc. Medicare Part B generally pays 80% of approved costs of covered services, and you pay the other 20%. Some services, like flu shots, Covid vaccines and a wellness visit, may cost you nothing.
Part B costs are going up about 6% for 2024, much higher than the Social Security COLA increase of 3.2% or the current annual rate of U.S. inflation, at 3.7%.
Part B deductible. Before Medicare pays anything, you have to meet your Part B deductible each year. The annual deductible for all Medicare Part B beneficiaries will be $240 in 2024, an increase of $14 from the annual deductible of $226 in 2023. As of January 2020, Medigap plans sold to new enrollees were not allowed to cover the Part B deductible. But once the deductible is met, Medicare and Medigap plans will cover some or all of your Part B costs.
Part B premium. The standard monthly premium for Medicare Part B enrollees will be $174.70 for 2024, an increase of $9.80 from $164.90 in 2023. This Part B premium is paid by all people on original Medicare and is incorporated into Medicare Advantage pricing, which may or may not result in a baseline monthly cost.
So, for most people on original Medicare, Medicare Part B is going to cost $174.70 a month for the premium, plus the cost of the $240 deductible. That’s a total cost of $2,336.40 a year, up about 6% from this year’s costs.
CMS offered this rather cryptic explanation of the increased costs:
The increase in the 2024 Part B standard premium and deductible is mainly due to projected increases in health care spending and, to a lesser degree, the remedy for the 340B-acquired drug payment policy for the 2018-2022 period under the Hospital Outpatient Prospective Payment System.
Curious about the 340B-acquired drug payment policy? Read this.
The IRMAA ‘surprise’
Since 2007, a beneficiary’s Part B monthly premium is based on reported income, known as MAGI, or modified adjusted gross income. According to the Social Security Administration handbook, for Medicare’s purposes MAGI is adjusted gross income (line 11 of your 2022 federal income tax form) plus tax-exempt interest.
Note that I mentioned your 2022 income tax return. That’s the one you filed earlier this year and now, just a month ago, CMS announced the IRMAA surcharge brackets applied to that 2022 return. In other words, you could not know the surcharge levels until after the fact. And this is a rather brutal surcharge, because going just $1 over any limit can trigger thousands of dollars of one-year costs.
Here are the 2024 Part B total premiums and surcharges for high-income beneficiaries, which apply to income reported on your 2022 tax return:

I took a quick look at the brackets and surcharges for 2023 versus 2024, and found that the income brackets were adjusted higher by varying percentages, about 4.9% to 6.2% for each bracket. The IRMAA surcharges were also adjusted higher by 6.0%.
These income-related monthly adjustment amounts affect about 7% of people with Medicare Part B. And it’s important to note that people on Medicare Advantage plans continue to pay the Part B premium, and are also subject to the IRMAA surcharges.
Annual income of $206,000+ for a couple may sound like a lot, but the lower IRMAA levels can easily be reached through Roth conversions, stock sales to fund a major purchase, a new pension starting up, etc. Be aware of the potential to trigger the IRMAA surcharges and plan around that possibility.
Part D: Drug coverage
IRMAA surcharges also apply to Medicare’s Part D premiums for drug coverage. There is no “standard” Part D premium — the cost you pay depends on the Part D insurer and plan you choose. The IRMAA cost, if any, is added on top of your base premium. People in Medicare Advantage plans don’t pay a separate Part D premium, since those plans include Medicare Advantage Prescription Drug (MAPD) coverage. But Part D is built into Medicare Advantage, and the IRMAA surcharge still applies.
Here are the Part D IRMAA levels for 2024, based on reported income for 2022:

Wrapping things up
Here is the end result of these IRMAA surcharges for a married couple filing jointly:
Obviously, these surcharges add up to substantially higher costs for both single and married couples. A couple hitting the 3rd tier of the IRMAA surcharges would be paying more than $7,500 a year of extra costs for Medicare coverage. Hitting tier 5 sends the annual costs up more than $12,000.
And I repeat: When you filed your federal tax return in early 2023 you could not know what these IRMAA brackets or surcharges would be. They were just announced on Oct. 12. They are called the “2024 IRMAA levels” but apply to your 2022 tax return.
When you file your 2023 return next year, realize that you won’t know the relevant IRMAA levels until October or November 2024, many months after you have filed. Your only option is to use the 2024 numbers as a guideline. It’s a crazy system.
You can appeal an IRMAA ruling
The Social Security Administration has very specific rules that will allow you to get a waiver of the IRMAA surcharge, if you meet certain criteria for a “life-changing event,” which include:
- Work stoppage
- Work reduction
- Employer settlement payment
- Death of spouse
- Divorce
- Loss of pension income
You’ll need to fill out IRS Form SSA-44 to request the waiver.
A final thought …
One point to remember, in fairness: For people collecting Social Security, payments will increase 3.2% next year, or about $708 for an average recipient. Medicare costs for a single person will increase about $131 without IRMAA surcharges. So although Medicare costs are rising faster than the Social Security COLA, recipients will still come out ahead, if that’s any consolation.
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David Enna is a financial journalist, not a financial adviser. He is not selling or profiting from any investment discussed. I Bonds and TIPS are not “get rich” investments; they are best used for capital preservation and inflation protection. They can be purchased through the Treasury or other providers without fees, commissions or carrying charges. Please do your own research before investing.











Dongchen, I always say that the inflation breakeven rate reflects sentiment but is a fairly lousy predictor of future inflation.…