Most people expect Medicare to be fairly straightforward. You enroll, pay your premium, and move on with your life.
But for some retirees, Medicare comes with an extra charge that can feel like it appeared out of nowhere.
That surcharge is called IRMAA, short for Income-Related Monthly Adjustment Amount. In simple terms, it means people with higher income may pay more for Medicare Part B and Part D. What makes it especially confusing is the timing: Medicare usually looks at your tax return from two years earlier, so your 2026 Medicare premiums are generally based on your 2024 income.
IRMAA often shows up long after the financial event that caused it.
Maybe you retired and had one last high-income year. Maybe you sold a business, took a larger withdrawal from a retirement account, completed a Roth IRA conversion. At the time, those decisions may have made perfect sense. But two years later, Medicare may look back at that higher-income year and increase your premiums.
That is why IRMAA can feel frustrating. The added cost may arrive after the moment has passed and after your income has already come back down. For adult children helping with a parent’s financial life, understanding IRMAA can also make sudden Medicare premium increases easier to trace back to prior financial events.
Moving money from a traditional IRA to a Roth IRA can be a very smart planning move and one we often explore with our clients. However, this can also be a trigger for IRMAA, as the amount converted counts as income that year, which can temporarily push you into a higher Medicare premium range later on.
The same can happen when someone sells a business, sells appreciated investments, or has a year with unusually large capital gains. Medicare does not really care whether the income was a one-time event or part of your normal lifestyle. It simply looks at what was reported on the tax return for that year.
This does not mean the decision was a mistake. IRMAA is something to plan for, not necessarily something to avoid at all costs. Planning ahead can help you make better decisions with a clear understanding of the trade-offs.
Here are a few key scenarios where Evermay Wealth can help you plan for IRMAA’s impact:
In some cases, yes.
If your income has gone down because of a major life event, Social Security may allow you to request a lower IRMAA amount. Qualifying events can include retirement or work stoppage, marriage, divorce, or the death of a spouse. The request is generally made using Form SSA-44, and though it is not guaranteed, many retirees do qualify.
IRMAA is one of those retirement details that is easy to miss until it shows up in real life.
It is not the biggest cost most retirees face, but it is one worth paying attention to, especially when you are making larger tax or income decisions. A little planning today can help prevent confusion later.
At Evermay Wealth, we believe retirement planning works best when the smaller details are not overlooked. If you are nearing Medicare age, considering a Roth conversion, planning the sale of a business, or helping a parent navigate retirement decisions, we are here to help you understand how IRMAA fits into the bigger picture.
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