Medicare IRMAA Surcharges: 7 Strategies for 2026

If you’re approaching Medicare age or already enrolled, there’s a hidden cost that catches many Treasure Coast retirees off guard: IRMAA surcharges. IRMAA — which stands for Income-Related Monthly Adjustment Amount — is essentially an extra premium that higher-income Medicare beneficiaries pay on top of their standard Part B and Part D premiums. For retirees in Stuart and across the Treasure Coast who’ve done a good job saving and investing over their careers, these surcharges can add thousands of dollars per year to your healthcare costs. The frustrating part? Many people don’t see them coming until it’s too late to do anything about it. In this guide, we’ll walk through what IRMAA surcharges are, how they’re calculated, and — most importantly — seven practical strategies you can consider for 2026 to help manage or reduce their impact.

What Are IRMAA Surcharges and Why Do They Matter?

Most Medicare beneficiaries pay a standard monthly premium for Part B (which covers doctor visits, outpatient services, and medical equipment) and Part D (prescription drug coverage). In 2025, the standard Part B premium is $185 per month. However, if your income exceeds certain thresholds, Social Security will tack on an additional amount — that’s the IRMAA surcharge. Think of it as a means-tested premium increase that says, “You can afford to contribute more toward your healthcare coverage.” While the logic makes sense from a policy standpoint, the financial impact on retirees who’ve been diligent savers can be significant.

For married couples filing jointly, IRMAA surcharges can apply to both spouses, effectively doubling the extra cost. At the highest income tier, a couple could pay well over $10,000 per year in additional Medicare premiums above and beyond the standard amount. That’s real money — enough to cover property taxes on many Treasure Coast homes, fund a nice vacation, or simply stay in your pocket where it belongs. The key thing to understand is that IRMAA surcharges are not a one-time hit; they recalculate every year based on your income, which means proactive planning can make a genuine difference.

What makes IRMAA surcharges particularly tricky is the “cliff” effect at each income bracket. Even one dollar of additional income can push you into the next tier, resulting in hundreds or thousands of dollars in extra premiums. Unlike our progressive income tax system — where only the income above a threshold is taxed at the higher rate — IRMAA works more like a staircase. Step over the line, and your entire surcharge jumps to the next level. This is why income management in the years leading up to and during Medicare enrollment is so critically important.

How IRMAA Surcharges Are Calculated for 2026

The Social Security Administration (SSA) determines your IRMAA surcharges based on your Modified Adjusted Gross Income, or MAGI. Your MAGI for this purpose is your adjusted gross income (AGI) plus any tax-exempt interest income — such as interest from municipal bonds. That second part surprises a lot of retirees who hold muni bonds thinking the income is “invisible” to the government. While it may be tax-free for income tax purposes, it absolutely counts toward the IRMAA calculation. You can learn more about how Social Security determines these amounts on the SSA’s Medicare premiums page.

For 2026, the income thresholds will be based on 2024 tax returns (more on that two-year lookback in a moment). While the exact 2026 IRMAA brackets haven’t been officially published as of this writing, the structure typically includes five surcharge tiers above the base premium level. For individuals, the first IRMAA tier historically kicks in around $103,000 in MAGI, with the threshold for married couples filing jointly starting around $206,000. These numbers are adjusted for inflation periodically, though not every year. Each subsequent tier adds progressively more to your monthly Part B and Part D premiums.

It’s worth noting that IRMAA surcharges apply to both Medicare Part B and Part D separately. Many retirees focus only on the Part B surcharge because it’s the larger number, but the Part D surcharges add up as well. When you combine both parts across both spouses and multiply by twelve months, you’re looking at amounts that can meaningfully affect your retirement cash flow. This is exactly why understanding the calculation methodology is the first step toward managing these costs effectively.

The Two-Year Lookback: Why 2024 Income Determines Your 2026 Costs

One of the most important concepts to grasp about IRMAA surcharges is the two-year lookback period. The SSA uses your tax return from two years prior to determine your current-year premiums. So for 2026 Medicare premiums, they’ll be looking at your 2024 Modified Adjusted Gross Income. This means that if you had a high-income year in 2024 — perhaps you sold a property on Hutchinson Island, exercised stock options, or took a large distribution from a traditional IRA — you could be facing elevated IRMAA surcharges in 2026, even if your income has since returned to normal levels.

This lookback creates both challenges and opportunities. The challenge is that by the time you receive your IRMAA determination notice in late 2025 (for 2026 premiums), the income that triggered it is already in the rearview mirror. You can’t go back and un-do a 2024 Roth conversion or un-sell a piece of real estate. The opportunity, however, is that if you’re reading this now and thinking about your 2025 income, you’re actually planning for your 2027 IRMAA surcharges — and that kind of forward-thinking is exactly what separates retirees who manage these costs from those who are blindsided by them.

For Treasure Coast retirees who are still a year or two away from Medicare eligibility, the lookback period is especially important to understand. The income decisions you make in your early 60s will directly influence your healthcare costs when you turn 65. If you’re planning to retire at 63 and are considering taking a lump-sum pension payout, selling a business, or liquidating concentrated stock positions, the timing of those transactions relative to your Medicare start date can have significant IRMAA implications.

7 Strategies to Manage IRMAA Surcharges in 2026

Strategy 1: Roth Conversions in Lower-Income Years. One of the most discussed strategies for managing IRMAA surcharges is strategically converting traditional IRA or 401(k) funds to a Roth IRA during years when your income is lower. For instance, if you retire at 62 but don’t start Medicare until 65, those intervening years might offer a window where your taxable income is relatively low. Converting some traditional retirement funds to Roth during this period does increase your taxable income in the conversion year, but once funds are in a Roth, future withdrawals don’t count toward MAGI. The goal is to “fill up” lower tax brackets and potentially keep your income below IRMAA thresholds in later years. This strategy requires careful coordination between tax planning and Medicare planning.

Strategy 2: Be Strategic About When You Realize Capital Gains. If you have taxable investment accounts with appreciated holdings, the timing of when you sell matters for IRMAA surcharges. Harvesting large capital gains in a single year can spike your MAGI above an IRMAA threshold, whereas spreading sales across multiple years might keep you below the line. This is particularly relevant for Treasure Coast retirees who may be downsizing from a larger home or selling investment property in Martin or St. Lucie County. While you wouldn’t let the tax tail wag the investment dog entirely, being mindful of IRMAA brackets when timing asset sales is a smart move.

Strategy 3: Consider the Impact of Tax-Exempt Interest. As we mentioned earlier, tax-exempt interest from municipal bonds gets added back to your AGI when calculating MAGI for IRMAA surcharges. If you hold a significant municipal bond portfolio and you’re hovering near an IRMAA bracket boundary, this income could be the factor that tips you over. That doesn’t necessarily mean you should sell all your muni bonds — they still offer genuine tax advantages — but it does mean you should factor this income into your IRMAA planning. Some retirees find that shifting a portion of their fixed-income allocation inside tax-deferred or Roth accounts can help manage this issue.

Strategy 4: Manage Required Minimum Distributions (RMDs) Proactively. Once you reach the age for Required Minimum Distributions (currently 73 for most retirees), those mandatory withdrawals from traditional IRAs and 401(k)s become part of your taxable income and directly affect IRMAA surcharges. If you have large traditional IRA balances, your RMDs could be substantial — and growing every year as the IRS divisor decreases with age. Strategies like earlier Roth conversions (see Strategy 1) or Qualified Charitable Distributions (see Strategy 5) can help reduce the size of future RMDs and, by extension, your exposure to IRMAA surcharges.

Strategy 5: Use Qualified Charitable Distributions (QCDs). If you’re 70½ or older and charitably inclined, Qualified Charitable Distributions allow you to send up to $105,000 per year (the 2024 limit, adjusted for inflation) directly from your IRA to a qualified charity. The beauty of a QCD is that the distribution satisfies your RMD requirement but does not count as taxable income — which means it won’t inflate your MAGI for IRMAA surcharge purposes. For Treasure Coast retirees who regularly support local organizations, churches, or charities, QCDs can be one of the most efficient tools for managing IRMAA surcharges while still giving generously.

Strategy 6: Bunch or Time Deductions Strategically. While itemized deductions don’t directly reduce MAGI for IRMAA purposes (since MAGI is based on AGI, not taxable income), certain above-the-line deductions and income-timing strategies can help. For example, if you’re self-employed or have business income, maximizing legitimate above-the-line deductions like health insurance premiums for self-employed individuals or contributions to retirement accounts can reduce your AGI. Additionally, some retirees use “bunching” strategies — concentrating charitable contributions into alternating years using donor-advised funds — to manage their overall tax picture and keep AGI lower in specific years, which can indirectly help with IRMAA surcharges.

Strategy 7: Consider Health Savings Account (HSA) Contributions If Still Eligible. This strategy applies primarily to those who haven’t yet enrolled in Medicare. If you’re on a high-deductible health plan and eligible for an HSA, contributions reduce your AGI dollar-for-dollar. Since your income in the years before Medicare enrollment feeds into the two-year lookback, maximizing HSA contributions during those years can help set the stage for lower IRMAA surcharges when you first enter Medicare. Plus, HSA funds can later be used tax-free for qualified medical expenses in retirement, including some Medicare premiums — making this a powerful dual-purpose strategy.

Life-Changing Events: The IRMAA Appeal Process

There’s an important safety valve built into the IRMAA system that many retirees don’t know about. If you’ve experienced a qualifying life-changing event that significantly reduced your income since the tax year used for the lookback, you can request that Social Security use a more recent year’s income instead. Qualifying events include marriage, divorce, death of a spouse, work stoppage or reduction, loss of income-producing property (such as due to a hurricane — something Treasure Coast residents unfortunately understand), and loss of pension income. You’d file SSA Form SSA-44 to request this reconsideration.

The appeal process for IRMAA surcharges is relatively straightforward, but documentation matters. You’ll need to provide evidence of both the life-changing event and your reduced income. It’s worth noting that simply having lower investment returns or choosing to spend less doesn’t qualify — the event needs to fall into one of the specific categories defined by Social Security. However, for those who do qualify, this appeal can eliminate or significantly reduce IRMAA surcharges that would otherwise be based on an income level that no longer reflects your reality. Many retirees who transition from full-time work to retirement find this provision especially valuable in their first year or two on Medicare.

One nuance to be aware of: the life-changing event appeal is not automatic. You need to proactively contact Social Security and make the case. If you simply ignore the IRMAA determination notice, you’ll be paying the higher premium. Also, keep in mind that the appeal applies to a specific year — if your income fluctuates, you may need to go through the process more than once. Having organized records and a clear understanding of the qualifying events can make this process much smoother.

Putting It All Together: IRMAA Planning for Treasure Coast Retirees

Living on the Treasure Coast offers a wonderful quality of life in retirement — the weather, the waterways, the close-knit communities from Jensen Beach to Port St. Lucie. Florida’s lack of state income tax is already a significant advantage for retirees, but it can also create a false sense of security when it comes to other income-related costs like IRMAA surcharges. Just because Florida doesn’t tax your income doesn’t mean the federal government isn’t paying attention. Your IRA distributions, capital gains from selling that waterfront condo, and even your municipal bond interest all factor into the IRMAA calculation regardless of which state you call home.

The most effective approach to managing IRMAA surcharges is to incorporate them into your broader retirement income plan rather than treating them as an isolated issue. Every withdrawal decision, investment sale, Roth conversion, and charitable gift has potential IRMAA implications. This doesn’t mean you should let IRMAA fear paralyze your financial decisions — sometimes paying the surcharge is the right trade-off in the context of your overall plan. The goal is simply to make informed decisions with full awareness of the consequences, rather than being caught off guard by a premium increase you didn’t see coming.

Multi-year tax projection is one of the most valuable exercises you can do in retirement. By mapping out your expected income sources year by year — Social Security benefits, pension income, RMDs, Roth conversions, investment sales — you can identify years where you’re likely to cross an IRMAA threshold and explore whether there’s flexibility to shift income between years. This is the kind of proactive planning that can save Treasure Coast retirees thousands of dollars over the course of their Medicare enrollment. And remember, because of the two-year lookback, you’re always planning at least two years ahead for IRMAA surcharges.

If you’ve found this guide helpful, we encourage you to listen to the full conversation on The 1715 Podcast, where we dive deeper into each of these strategies with real-world examples. IRMAA surcharges are one of those retirement planning topics that benefit enormously from ongoing education — the rules can shift, the thresholds can change, and your own financial situation will evolve over time. Staying informed is the best defense. And if you’d like personalized guidance on how these strategies might apply to your specific situation, consider scheduling a conversation with a qualified financial professional who understands both the tax and Medicare planning landscape. Your future self — and your future Medicare premiums — will thank you.

This content is for educational purposes only and does not constitute investment advice. Past performance is not indicative of future results. Please consult a qualified financial professional before making any financial decisions.