What Is IRMAA and Why Should You Have a Plan in Retirement
- Ben Simpson
- Jul 29, 2025
- 4 min read

When planning for retirement, most people focus on investment returns, withdrawal strategies, and budgeting for travel or healthcare. But one lesser-known factor that can significantly impact your retirement finances what is IRMAA, or Income-Related Monthly Adjustment Amount.
What Is IRMAA and Why Should You Have a Plan in Retirement?
When planning for retirement, most people focus on investment returns, withdrawal strategies, and budgeting for travel or healthcare. But one lesser-known factor that can significantly impact your retirement finances is IRMAA, or Income-Related Monthly Adjustment Amount.
IRMAA isn’t just another acronym—it’s a hidden cost that can quietly add thousands to your annual Medicare premiums if you’re not careful. And because it’s based on your income from two years prior, even smart savers and retirees with modest lifestyles can unexpectedly trigger it.
Let’s unpack what IRMAA is, how it works, and what proactive steps you can take to avoid unnecessary costs.
What Is IRMAA?
IRMAA is an additional surcharge added to your Medicare Part B and Part D premiums if your Modified Adjusted Gross Income (MAGI) exceeds certain thresholds. These surcharges are assessed annually by the Social Security Administration (SSA), using your tax return from two years prior.
For example, if you’re enrolling in Medicare in 2024, your 2022 MAGI determines whether you’ll be subject to IRMAA.
2024 IRMAA Thresholds
According to the Social Security Administration, IRMAA surcharges begin once your MAGI exceeds:
$103,000
for individuals
$206,000
for married couples filing jointly
And the additional monthly premium amounts can be significant:
MAGI (Individual) | MAGI (Joint) | Part B IRMAA | Part D IRMAA |
|---|---|---|---|
$103,000 $129,000 | $206,000$258,000 | +$69.90/month | +$12.90/month |
$129,001 $161,000 | $258,001 $322,000 | +$174.70/month | +$33.30/month |
$161,001 $193,000 | $322,001 $386,000 | +$279.50/month | +$53.80/month |
$193,001 $500,000 | $386,001 $750,000 | +$384.30/month | +$74.20/month |
$500,001+ | $750,001+ | +$419.30/month | +$81.00/month |
Even a small jump in taxable income can place you in a higher IRMAA bracket, adding over $6,000/year for a couple.
Why Should IRMAA Be Part of Your Retirement Plan?
1. It’s a Preventable CostWhile IRMAA is triggered by income, most retirees have control over how and when income is recognized, particularly when drawing from retirement accounts. With smart planning, you can minimize your exposure or avoid IRMAA entirely.
2. It Impacts Your Healthcare BudgetAccording to Fidelity’s 2023 Health Care Cost Estimate, the average 65-year-old couple retiring today will need $315,000 just to cover healthcare expenses in retirement. Add IRMAA to the mix, and that figure can grow even faster.
Failing to plan for What Is IRMAA may result in:
Paying thousands more annually for the same Medicare coverage
Higher costs with no increase in services
Less flexibility in your retirement spending
3. It’s Assessed Annually (and Retroactively)IRMAA isn’t a one-time fee—it’s re-evaluated each year using tax returns from two years prior. That means:
A large Roth conversion today could result in higher premiums two years from now
Selling a business or cashing out investments could push you into IRMAA territory
Even required minimum distributions (RMDs) from traditional IRAs could increase your MAGI
Common Triggers That Push Retirees Into IRMAA
Large Roth IRA conversions
Capital gains from selling investments or real estate
One-time income events (inheritances, bonuses, property sales)
Uncoordinated withdrawals from pre-tax retirement accounts
Business income or deferred compensation from pre-retirement years
Being aware of these triggers helps you plan income more strategically.
How to Manage or Minimize IRMAA
1. Practice Tax Diversification EarlyHaving your retirement savings spread across pre-tax, after-tax, and tax-free accounts gives you flexibility in managing income during retirement.
Use Roth IRAs or Roth 401(k)s to draw tax-free income
Draw from taxable accounts in low-income years
Avoid concentrating your savings in one type of account (like a traditional 401(k))
2. Time Roth Conversions StrategicallyRoth conversions can help reduce long-term tax burdens and future RMDs—but they increase your MAGI in the year of conversion.
Consider “filling up” lower tax brackets with smaller annual conversions
Perform conversions before Medicare enrollment (typically at age 65)
Space them over several years to avoid IRMAA spikes
3. Use Qualified Charitable Distributions (QCDs)Once you turn 70½, you can donate up to $100,000 per year directly from your IRA to charity. This counts toward your RMD but doesn’t increase your MAGI.
Lowers your taxable income
Helps you stay under IRMAA thresholds
Fulfills philanthropic goals
4. Monitor MAGI and File an IRMAA Appeal if EligibleIf your income has recently dropped due to life changes like retirement, divorce, or death of a spouse, you may qualify to appeal IRMAA using Form SSA-44.Common qualifying events:
Work stoppage or reduction
Loss of income-producing property
Loss of pension or annuity income
Why IRMAA Planning Should Start Before Retirement
Many financial advisors recommend beginning IRMAA planning in your 50s or early 60s, especially if:
You anticipate a high-income year close to Medicare eligibility
You want to convert tax-deferred assets at a lower rate
You’re optimizing Social Security timing, which also affects MAGI
Small Decisions Can Save Big
IRMAA might sound like a bureaucratic detail, but it can cost retirees thousands per year if ignored. The good news? It’s also one of the most manageable costs, as long as you plan ahead.
Whether you’re 5 years from retirement or already enrolled in Medicare, understanding IRMAA gives you the power to:
Preserve your income
Lower healthcare costs
Control your tax exposure
The earlier you act, the more options you’ll have to stay under IRMAA thresholds and keep your retirement on track.
At Trek Insurance Solutions, we help retirees and pre-retirees like you navigate the complexities of Medicare, IRMAA, and retirement income planning. Whether you’re still years away from retirement or already enrolled in Medicare, we can help you create a personalized strategy that keeps your costs low and your financial future secure.
Visit trekis.net to schedule a free consultation or explore our Medicare and retirement planning services today.


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