Jun 8, 2026
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If you’re approaching the age of 65, you probably already know you’ll be eligible for Medicare. You also likely have a precise number in mind about how much this program will cost you. Most seniors assume they’ll be paying the standard $202.90 a month for Part B in 2026.
But far too many 65-year-olds sign up for Medicare only to get a surprise monthly bill that is much larger than they anticipated. This is because of the unintuitive way the government calculates your monthly premium and the penalties you could be exposed to if you’re not careful.
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This oversight could cost you hundreds of dollars extra every single month. Here’s what you need to know about how these hidden traps emerge and how best to avoid them.
Medicare’s hidden trap
The Medicare system is complex and byzantine. To make matters worse, there’s also a list of different penalties that apply if you didn’t understand the system and make a bureaucratic mistake.
For instance, if you enroll in the program late, you may face an additional surcharge every month. These penalties can range from 1% to 10% of your monthly premiums under Part A, B or D, according to the National Council on Aging.
However, the biggest mistake most seniors make is with IRMAA or the Income-Related Monthly Adjustment Amount. This is a surcharge the federal government layers on top of your standard Medicare Part B and Part D premiums if your income exceeds certain thresholds.
What makes this tricky is that the government doesn’t use your current annual income to calculate this surcharge. Instead, it uses your income from two years ago. So, if you’re enrolling in Medicare in 2026, the government will use your income in 2024 for reference.
This is the part that catches most seniors off-guard, because they may still be working and earning near their peak in 2024. Or, you may have had a major windfall event that year — a bonus, severance package, a Roth conversion, or the sale of an investment property can all push income into a higher bracket, triggering a surcharge that lasts the entire year.
Simply put, if you didn’t plan for IRMMA and had exceptional income in 2024, your monthly premiums could be as high as $689.90 or up to $487 extra per month. That’s a huge hit in your mid-60s.
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The good news is that this financial bomb can be avoided.
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Avoiding IRMMA
There are essentially two ways to mitigate this issue: plan or appeal.
Planning is probably most effective. If you’re a few years away from age 65, take the time to understand the system and weave it into your retirement plan. This will help you time property sales or Roth conversions with all the rules in mind so that you never get hit with an unnecessary penalty.
Understanding the system should also let you discover and plan for its limitations. For instance, Medicare doesn’t generally cover the cost of long-term care, which can be a huge surprise cost in your senior years. Here, signing up for private insurance can protect you.
Long-term care insurance offers coverage for the costs of in-home assistance, nursing homes or assisted living facilities.
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According to the latest CareScout Cost of Care Survey, the median annual cost of living in an assisted living community or a semi-private room in a nursing home could be $74,400 and $114,975, respectively.
That’s an annual estimate, which means a typical senior can quickly burn through their nest egg within a few years of unplanned and uninsured long-term care.
Without proper planning, paying for long-term care could deplete your retirement fund. In many cases, the burden of paying for care often falls on family members — potentially straining their own finances.
GoldenCare offers different options based on your needs, including hybrid life or annuity with long-term care benefits, short-term care, extended care, home health care, assisted living and traditional long-term care insurance.
For those already paying an IRMMA, there are ways to appeal this surcharge if your situation has changed considerably. For instance, the loss of a spouse or divorce could have changed your financial life enough to qualify for some reprieve. You can file Form SSA-44 with Social Security to request a reduction based on more recent income data.
Ultimately, the best way to keep your costs down is to understand the system or hire a professional to lay out a comprehensive plan for you many years before you turn 65.
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Vishesh Raisinghani is a financial journalist covering personal finance, investing and the global economy. He's also the founder of Sharpe Ascension Inc., a content marketing agency focused on investment firms. His work has appeared in Moneywise, Yahoo Finance!, Motley Fool, Seeking Alpha, Mergers & Acquisitions Magazine and Piggybank.
