IRMAA at 65: Will Your Income Raise Your Medicare Premium in Connecticut? (2026)

IRMAA is an income-based surcharge Social Security adds to Medicare Part B and Part D premiums above certain income thresholds. Because it’s calculated from a tax return filed two years earlier, Connecticut residents retiring right at 65 often get an unwelcome first bill — one a simple appeal form can often fix.

What IRMAA Is: The Income-Related Surcharge on Medicare Part B and Part D

IRMAA stands for Income-Related Monthly Adjustment Amount. It’s not a separate insurance product, a penalty, or a fee you can opt out of by choosing a different plan — it’s an adjustment that Social Security applies directly to the premiums you already pay for Medicare Part B (medical insurance) and Medicare Part D (prescription drug coverage) when your income crosses certain thresholds. If you fall into a higher income bracket, you simply pay more each month for the exact same Part B and Part D coverage that a lower-income beneficiary receives.

The name itself is a clue to how the program works. It is “income-related,” meaning it is based entirely on what you earned (as reflected on your federal tax return), not on your health status, your claims history, or how much medical care you actually use. It is “monthly,” because it’s added to your regular monthly premium bill rather than charged as a one-time fee. And it is an “adjustment,” because it scales — the higher your income tier, the larger the additional amount tacked onto your premium.

Most Medicare beneficiaries in Connecticut never encounter IRMAA. The Social Security Administration reserves it for a minority of beneficiaries whose reported income sits above the standard threshold, and the majority of retirees — those living on Social Security benefits, a modest pension, and ordinary retirement account withdrawals — pay the standard, non-IRMAA premium for both Part B and Part D. But for higher-income households, and especially for new retirees whose final working year still shows up on a tax return, IRMAA is a real cost that deserves attention during Medicare planning. For a broader overview of what Medicare actually costs when you first become eligible, see our guide on How Much Does Medicare Cost at 65 in Connecticut?

In practice, IRMAA doesn’t arrive as a separate bill from a separate agency. If you’re already collecting Social Security retirement benefits, the standard Part B premium and any IRMAA surcharge are typically deducted directly from your monthly Social Security check, the same way your regular premium is already withheld. If you haven’t yet started collecting Social Security, or if your premium isn’t being withheld automatically for some other reason, Medicare bills you directly on a quarterly or monthly basis, with the IRMAA amount folded into the total due. Either way, the practical experience is one combined premium figure — you’re not tracking two separate payments to two separate places.

It’s also worth understanding what IRMAA is not. It is not the Part B late-enrollment penalty, which applies when you delay signing up for Part B without qualifying employer coverage and accrues at a fixed rate for each 12-month period you go without coverage. It is not the Part D late-enrollment penalty, which similarly accrues based on the number of months you went without creditable drug coverage. IRMAA and the late-enrollment penalties are calculated completely differently and can, in some unfortunate cases, both apply to the same person at the same time — but they are legally and administratively distinct. If you’re trying to sort out whether a premium surprise is IRMAA or a late penalty, our article on the Medicare Part B Late Penalty at 65 in Connecticut walks through how that penalty is calculated and how it differs from an income-related surcharge.

How the Income Lookback Works: Why Your First Year on Medicare Can Be Priced Off Your Last Paycheck

The mechanic that trips up the most new retirees is the lookback period. Social Security does not use your current income to calculate IRMAA. It uses your Modified Adjusted Gross Income (MAGI) from the federal tax return you filed two years before the current coverage year. For premiums charged in 2026, for example, Social Security is looking at the tax return you filed for the 2024 tax year — the return the IRS provided to Social Security through its standard data-sharing process.

Think through what that means for someone who worked full-time through age 64 and then retired right around their 65th birthday. Their 2024 tax return — the one used to calculate their first year of Medicare premiums — likely still reflects a full salary, possibly supplemented by a bonus, stock vesting, a pension buyout, or the sale of a business. None of that income exists anymore in the retiree’s actual day-to-day life by the time their Medicare premium bill arrives, but Social Security has no way to know that automatically. It simply applies the tax return on file, two years back, exactly as instructed by law.

A Common Pattern: The “First-Year Surprise”

This creates what many Connecticut Medicare brokers informally call the “first-year surprise.” A retiree does everything right — enrolls during their Initial Enrollment Period, picks a Medicare Supplement or Medicare Advantage plan, coordinates the transition away from employer coverage — and then opens a Medicare premium notice that’s noticeably higher than the standard amount they expected. Nothing went wrong with the enrollment. The premium is simply reflecting income earned during a working year that has already ended. For a full walkthrough of how the initial sign-up window itself works alongside this income question, see our Turning 65 and Still Working in Connecticut guide, which covers how continued employment interacts with Medicare enrollment timing.

The lookback isn’t arbitrary bureaucratic inefficiency — it exists because tax returns take time to process and because Social Security needs a verified, IRS-confirmed income figure rather than a self-reported estimate that could be gamed. The tradeoff is that the system is inherently backward-looking, and backward-looking systems are, by definition, occasionally wrong about where a person’s finances stand today. That mismatch is exactly why the appeal process discussed later in this article exists: to give retirees a formal way to tell Social Security “that number no longer reflects my situation.”

It’s also worth noting that the lookback isn’t unique to your first year on Medicare — it applies every year you’re enrolled. If your income drops in retirement, your IRMAA exposure (if any) should naturally decline two years later as lower-income tax returns work their way through the system. The friction is concentrated specifically in the transition years: the year you retire, and sometimes the year after, when your tax returns are still catching up to your new, lower retirement-income reality.

How IRMAA Is Structured: Income Tiers, Part B, and Part D Surcharges

IRMAA isn’t a single flat add-on fee. It’s structured as a series of income tiers, called brackets, that sit above the standard premium level. As your Modified Adjusted Gross Income climbs from one bracket into the next, the surcharge added to both your Part B and your Part D premium increases in steps. Beneficiaries in the lowest IRMAA bracket pay a modest additional amount; beneficiaries in the highest bracket pay substantially more, on top of their base premiums.

A few structural features are worth understanding, separate from the exact dollar amounts (which we intentionally are not quoting here, since they’re adjusted annually — more on that below):

• Both Part B and Part D are affected. If your income places you in an IRMAA bracket, you don’t just pay more for Part B medical coverage — you also pay an additional income-related amount on top of your Part D prescription drug premium, even if you’re enrolled in a stand-alone Part D plan through a private carrier rather than through Medicare directly.
• The brackets are the same structure whether you have Original Medicare or Medicare Advantage. IRMAA is assessed based on your enrollment in Part B and Part D coverage, not based on which type of plan delivers that coverage. A Medicare Advantage enrollee whose plan includes drug coverage can still owe an IRMAA surcharge on top of their plan premium if their income triggers it.
• Filing status changes the bracket thresholds. Married couples filing jointly, single filers, and married individuals who file separately from a spouse they lived with during the year are evaluated against different threshold tables. Married-filing-separately households in particular can hit higher brackets at noticeably lower absolute income levels, since that filing status uses a much more compressed bracket structure.
• Thresholds and surcharges adjust annually. Because these figures are tied to statutory inflation adjustments, the exact income cutoffs and dollar surcharges for Part B and Part D shift most years. The only reliable way to know the current-year numbers is to check them directly at ssa.gov/medicare/cost or medicare.gov rather than relying on a number you saw somewhere else, even in a source that was accurate last year.

The table below illustrates the relative structure of the IRMAA system — how surcharges step up across tiers — without attaching specific dollar figures, since those change annually and should always be verified directly with Social Security or Medicare.

One quirk of the bracket system surprises many retirees the first time they encounter it: IRMAA brackets function as a step, not a smooth phase-in. If your MAGI lands even slightly above a bracket threshold, you owe the full surcharge associated with that entire bracket — not a prorated amount reflecting how far over the line you actually are. This is sometimes referred to informally as the “IRMAA cliff,” and it’s one of the more compelling reasons careful income timing matters in the specific tax years that will later be used for the lookback calculation. A retiree who can legitimately manage the timing of a large one-time income event — a Roth conversion, a bonus payout, the sale of appreciated property — to land just under a bracket threshold rather than just over it can meaningfully reduce Medicare costs two years later, without changing total lifetime income at all, simply by adjusting which tax year absorbs the income.

One additional structural point worth flagging: the Part D redesign that took effect in 2025 capped total out-of-pocket prescription drug spending at $2,000 per year for Medicare beneficiaries. That $2,000 cap is a genuinely fixed, statutory figure and applies to what you spend at the pharmacy counter across the year. It is separate from — and not reduced by — any IRMAA surcharge you owe on your Part D premium. In other words, the $2,000 out-of-pocket cap protects you from catastrophic drug costs, but it does not offset or interact with the monthly income-related surcharge billed on top of your premium. For more on how Part D pricing works in Connecticut generally, see Medicare Part D in Connecticut 2026.

Why This Catches Newly-65 Connecticut Retirees Off Guard (Greenwich, Darien, New Canaan, Westport)

IRMAA is a national program with the same brackets and rules in every state, but its practical impact isn’t evenly distributed. It shows up more frequently among retirees whose pre-retirement income was higher, and Connecticut has no shortage of towns where that describes a meaningful share of the population turning 65 each year. Fairfield County communities like Greenwich, Darien, New Canaan, and Westport are home to a disproportionate number of executives, finance professionals, attorneys, business owners, and other high earners — exactly the profile most likely to cross an IRMAA threshold in their final working year.

What makes this especially confusing locally is that the surprise often lands on people who did everything a careful retiree is supposed to do. They worked with a financial advisor. They funded retirement accounts diligently. They may have even planned their retirement date carefully around Social Security claiming strategy or a pension vesting schedule. But few financial plans explicitly flag “your final W-2 or K-1 income will determine your Medicare premium bracket roughly eighteen months from now” — because IRMAA sits at the intersection of tax planning and Medicare, two areas that are often handled by different professionals who aren’t necessarily coordinating on this specific point.

A Realistic Illustration (Hypothetical, No Dollar Figures)

Consider a hypothetical Greenwich resident who spent the final stretch of their career in a senior role, then retired at the start of the year they turned 65. Their income for that final working year — bonus included — was reported on the tax return that Social Security later uses to set their Medicare premiums roughly two years afterward. By the time that premium notice arrives, their actual income has already dropped substantially: no more salary, no more bonus, just Social Security, modest portfolio withdrawals, and perhaps a pension. Yet their premium bill still reflects the higher, no-longer-accurate income figure from the tax return on file — because that’s what the lookback rule requires, absent an appeal.

This is precisely the population that benefits most from understanding the SSA-44 appeal process described in the next section, and it’s also why proactive planning around the year you retire matters as much as planning around the year you enroll in Medicare. If you’re navigating the broader enrollment picture at the same time, our Medical Insurance at 65 in Connecticut: Complete Guide is a useful starting point that ties enrollment timing, plan selection, and cost considerations together in one place.

The same dynamic plays out, to varying degrees, across other higher-income pockets of the state — parts of Fairfield County beyond the four towns named above, as well as select neighborhoods in Hartford and New Haven counties where retirees are transitioning out of executive, medical, legal, or business-ownership careers. The common thread isn’t geography so much as income trajectory: a career that concludes with several years of elevated earnings, followed by a retirement that meaningfully lowers actual spendable income, is the exact pattern the IRMAA lookback is least equipped to reflect accurately in year one.

It’s worth emphasizing that this isn’t a Greenwich, Darien, New Canaan, or Westport-specific rule — IRMAA applies identically to a retiree in Hartford, Bridgeport, or Waterbury with the same income profile. These towns are simply where the demographic overlap between “high pre-retirement income” and “newly turning 65” is more concentrated, so the issue comes up in conversation more often. Anyone in Connecticut — or any state — with a high-earning final working year should expect to at least check whether IRMAA applies to them.

The Fix: Form SSA-44 and the “Life-Changing Event” Appeal

The good news is that Social Security anticipated this exact mismatch and built a formal correction mechanism into the system: Form SSA-44, officially titled “Medicare Income-Related Monthly Adjustment Amount — Life-Changing Event.” This form lets you ask Social Security to base your premium on a more recent, more accurate income estimate instead of the two-year-old tax return the system defaults to — but only if your situation matches one of a specific list of qualifying life-changing events.

Retirement or a reduction in work hours is one of the most common qualifying events, and it’s exactly the scenario described throughout this article: your income has genuinely and permanently decreased because you’ve stopped working or cut back significantly, and your most recent tax return simply hasn’t caught up to that reality yet. Other qualifying events include marriage, divorce or annulment, the death of a spouse, a significant loss of income-producing property (through a disaster or other circumstance beyond your control), a reduction or loss of pension income (including the complete cessation of certain pension payments), and receiving settlement payment from an employer or former employer due to the employer’s closure, bankruptcy, or reorganization.

Qualifying Life-Changing Events for an SSA-44 Appeal

Critically, ordinary market losses, spending down savings, or simply feeling like your income “should” be lower do not qualify as life-changing events under SSA-44. The list above is specific and Social Security applies it narrowly. If your situation doesn’t fit one of these categories, the standard two-year lookback will continue to govern your premium until your actual, more recent tax returns work their way through the system on their own.

To file an appeal, you’ll generally submit Form SSA-44 along with supporting documentation either by mail or in person at a local Social Security office. You’ll be asked to provide a reasonable estimate of your current or expected income for the relevant year, along with evidence supporting the life-changing event itself. Social Security reviews the submission and, if approved, recalculates your premium going forward based on the more current information rather than the outdated tax return.

The IRMAA Appeal Timeline and Documentation Social Security Wants

Timing matters with an SSA-44 appeal, and it’s worth understanding what to expect before you start the process. You can generally file Form SSA-44 as soon as the life-changing event has occurred and you know, or can reasonably estimate, how it will affect your income going forward — you don’t need to wait until you’ve filed a new tax return reflecting the change. In fact, waiting for a new tax return to be processed would defeat the purpose, since the entire point of the appeal is to get ahead of the two-year lag built into the standard system.

When you submit the form, Social Security will typically want:

• A completed SSA-44 form identifying which life-changing event applies to your situation and the year it occurred.
• Supporting documentation for that specific event — for example, a retirement letter or notice from your employer confirming your last day of work, a death certificate, or a divorce decree, depending on which category applies.
• A reasonable estimate of your current or expected MAGI for the year in question, since the whole point of the appeal is to substitute a more accurate, current figure for the outdated tax-return figure.
• Any other documentation Social Security specifically requests to verify the change, which can vary depending on your individual circumstances.

Processing times for these appeals can vary depending on Social Security’s workload and the completeness of your submission, so it’s worth submitting complete documentation the first time rather than piecemeal. If your appeal is approved, the corrected premium generally applies going forward from the point Social Security processes the change — it’s not automatically retroactive to your Medicare start date in every case, which is one more reason to file as early as reasonably possible once you have documentation of the qualifying event in hand.

If your appeal is denied, or if you disagree with the outcome, you generally retain the right to request a formal reconsideration through Social Security’s standard appeals process. Because the rules around timelines, documentation, and reconsideration rights can be detailed and situation-specific, this is an area where working with someone who understands both the Medicare enrollment side and the appeal mechanics can save real time and frustration — particularly for retirees juggling this alongside other transition tasks like coordinating the end of employer coverage. Our Medicare at 65 With a Spouse Under 65 in Connecticut guide covers a related scenario worth reviewing if a divorce or spousal life-changing event is part of your picture, since spousal coverage and IRMAA timing can intersect in ways that are easy to miss.

Common Mistakes Connecticut Retirees Make With IRMAA

Beyond simply not knowing IRMAA exists until a premium notice arrives, a handful of avoidable missteps come up again and again in conversations with newly-65 Connecticut retirees. Recognizing them ahead of time can save real money and a fair amount of frustration.

• Assuming a first-year surcharge is permanent. Because IRMAA is recalculated annually based on the rolling two-year lookback, a surcharge triggered by your final working year doesn’t necessarily follow you for the rest of your retirement. As lower-income tax returns work their way through the system, the surcharge can shrink or disappear on its own — though filing an SSA-44 appeal, when you qualify, gets you there faster than waiting.
• Waiting to appeal until a “real” lower-income tax return catches up. Some retirees assume they simply have to absorb the higher premium until their tax filings reflect their new reality. That’s often unnecessary. If your situation matches a qualifying life-changing event, you can generally file Form SSA-44 with a current income estimate well before your next tax return is even due.
• Not appealing because they assume it “probably won’t help.” Retirees sometimes skip the SSA-44 process out of a sense that the paperwork isn’t worth the effort for what they assume will be a small adjustment. Depending on how large the income gap is between the old tax return and current reality, the difference between brackets can be significant — it’s worth at least confirming before deciding to skip it.
• Confusing an IRMAA determination notice with a scam or a billing error. Social Security does send official written notices when IRMAA applies, and because the letter can arrive without much warning, some retirees mistake it for a phishing attempt or an error and set it aside. These notices are legitimate and typically include instructions for requesting reconsideration if you believe the determination is wrong.
• Overlooking that Part D is affected too. Retirees sometimes focus entirely on the Part B premium increase and don’t realize their Part D premium — whether through a stand-alone drug plan or a Medicare Advantage plan with drug coverage — carries its own separate income-related surcharge on top of it.
• Relying on last year’s numbers. Because IRMAA thresholds and surcharge amounts are adjusted annually, a figure that was accurate last year, or that a friend or neighbor mentioned from their own experience, may not be accurate for the current year. Always confirm the current-year numbers directly at ssa.gov/medicare/cost or medicare.gov before making assumptions about where you stand.

Retirement-Income Planning: Roth Conversions, Withdrawal Timing, and Future IRMAA Exposure

IRMAA isn’t only a first-year issue. Because the lookback rule applies every year you’re on Medicare, the income decisions you make throughout retirement can influence your premium bracket roughly two years later. This is where retirement-income planning and Medicare planning genuinely overlap, and it’s an area where a little foresight can meaningfully reduce the odds of an unwelcome surprise down the road.

Two decisions in particular tend to come up most often in this context: Roth conversions and the timing of IRA or 401(k) withdrawals, including Required Minimum Distributions later in retirement.

A Roth conversion — moving funds from a traditional, pre-tax retirement account into a Roth account — generally creates taxable income in the year of the conversion, which flows into that year’s Modified Adjusted Gross Income. If that conversion is large, it can push a retiree’s MAGI into a higher IRMAA bracket two years later, even if their day-to-day spending income stays modest. This doesn’t mean Roth conversions are a bad idea; for many retirees they remain a sound long-term tax strategy, particularly for managing future Required Minimum Distributions or leaving a more tax-efficient legacy to heirs. But the size and timing of a conversion is worth thinking through in light of its two-year-later Medicare premium impact, not just its immediate tax bill.

Similarly, how and when you draw down IRA or 401(k) balances — spreading withdrawals evenly across multiple years versus taking a single large distribution in one year — can affect whether your MAGI stays under an IRMAA threshold or spikes above it. A retiree who needs a large one-time sum, for a home renovation or a major purchase, might structure that withdrawal differently, or plan around it, once they understand it could echo into their Medicare premium two years out.

Required Minimum Distributions add another layer worth understanding, even though the age at which they begin is set by federal law rather than by anything you can control. Once RMDs start, the withdrawal amount is calculated based on your account balance and a life-expectancy factor, and it counts as taxable income the same as any other retirement account distribution — which means it flows into MAGI and can influence your IRMAA bracket two years later just like a discretionary withdrawal would. Some retirees find that strategic Roth conversions in the years before RMDs begin can reduce the size of future required distributions, which in turn can help manage long-term IRMAA exposure — but again, the right sequencing depends heavily on your individual tax situation, other income sources, and long-term goals, and is best worked out with a CPA or financial advisor rather than a general guide.

This is general education, not personalized tax advice — the right approach depends on your full financial picture, your tax bracket, your legacy goals, and factors well outside the scope of a Medicare article. That’s exactly why We Find Your Insurance offers retirement-income planning conversations alongside Medicare enrollment guidance: the two decisions are connected, and looking at them together, ideally alongside your tax professional or financial advisor, tends to produce better outcomes than treating Medicare and retirement income as entirely separate conversations. If estate and legacy planning is also part of your retirement picture, our Estate Planning for Retirees Connecticut guide covers how those pieces typically fit together for Connecticut households.

Who IRMAA Does NOT Affect: Most CT Retirees Never See a Surcharge

With all of the above focused on the retirees who do run into IRMAA, it’s worth stepping back and being clear about who this entire article does not apply to: the majority of Connecticut Medicare beneficiaries. IRMAA is, by design, a surcharge that only applies above a specific income threshold, and most people living on typical retirement income — Social Security benefits, a modest pension, and ordinary withdrawals from retirement savings — never cross into IRMAA territory at all. If your income falls below the standard threshold, you simply pay the standard Part B and Part D premiums, the same amount as every other beneficiary at that income level, with no adjustment whatsoever.

This point matters because IRMAA sometimes gets more attention than its actual reach would suggest, simply because it’s a more complicated topic than the standard premium. Don’t assume you’re affected just because you’ve heard about it — the only way to know for certain is to look at your actual Modified Adjusted Gross Income from your relevant tax return against the current-year thresholds published at ssa.gov/medicare/cost.

It’s also worth distinguishing IRMAA from an entirely different — and much more favorable — category: Connecticut’s Medicare Savings Programs, which exist at the opposite end of the income spectrum. Programs like QMB, SLMB, and ALMB help lower-income Connecticut Medicare beneficiaries with premium and cost-sharing assistance, and dual-eligible beneficiaries who qualify for both Medicare and HUSKY (Connecticut’s Medicaid program) often have little to no premium burden at all. If you’re unsure whether a Medicare Savings Program or dual-eligible status might apply to you or a family member, see our guide on Dual-Eligible Medicare and HUSKY in Connecticut. The gap between that end of the spectrum and the IRMAA-affected end is wide, and most Connecticut retirees fall comfortably in the middle, paying standard premiums with no surcharge and no special assistance needed.

If you want a straightforward way to check where you stand before assuming either way, three steps cover most of it: first, locate your Modified Adjusted Gross Income from the relevant tax return (generally two years before the current year) — it’s typically listed on your Form 1040 or available through your tax preparer. Second, compare that figure against the current-year IRMAA thresholds published at ssa.gov/medicare/cost, keeping in mind that the thresholds differ depending on whether you file single, jointly, or married filing separately. Third, if you’re close to a threshold or unsure how to read your own return, an independent Medicare broker or a CHOICES counselor can help you interpret it — there’s no cost to asking, and it beats guessing based on a number you might have seen quoted for a different tax year.

Connecticut’s free, state-run counseling program, CHOICES (through the Connecticut Department of Aging and Disability Services), is also a helpful, no-cost resource if you want an objective second opinion on where you stand — whether that’s confirming you’re not affected by IRMAA, helping you understand a Medicare Savings Program application, or simply walking through your options as you approach 65.

Frequently Asked Questions

Sorting out whether IRMAA applies to your situation — and, if it does, whether a life-changing event might justify an appeal — is exactly the kind of question that benefits from an independent, licensed perspective rather than guesswork. We Find Your Insurance is an independent Connecticut Medicare broker led by Joseph Antonucci, and we help new-to-Medicare retirees across the state understand exactly what they’ll pay, why, and what options exist to manage that cost — including coordinating with your tax professional on the retirement-income timing questions that feed into IRMAA. If you’re approaching 65 and want a clear-eyed look at your Medicare costs before you enroll, start with our Turning 65 Medicare Checklist Connecticut 2026, or reach out directly through our Medicare Agent Near Me for New-to-Medicare Turning 65 guide to schedule a no-cost consultation. There’s never a fee to work with us, and our guidance is independent — we’re not tied to a single insurance carrier, which means the recommendations you get are based on your situation, not a sales quota.