How Social Security Affects Your Medicare Premiums (IRMAA Explained Simply)
How Social Security Affects Your Medicare Premiums (IRMAA Explained Simply)
Most people assume their Medicare Part B premium is fixed. It’s not — and if you’re receiving Social Security, your income could be quietly pushing it hundreds of dollars higher every month.
Here’s what nobody tells you when you turn 65: Medicare and Social Security are deeply connected. The amount you earned — and when you start drawing benefits — can trigger a surcharge called IRMAA that adds up to $320+ per month per person to your Medicare bill.
What Is IRMAA?
IRMAA stands for Income-Related Monthly Adjustment Amount. It’s a premium surcharge added to your Medicare Part B (and Part D) costs based on your income from two years prior.
If your income is above a certain threshold, you pay more for Medicare — often significantly more.
For 2026, here’s how the tiers break down:
| Individual Income (2024 MAGI) | Joint Income (2024 MAGI) | Monthly Part B Premium |
|---|---|---|
| Up to $106,000 | Up to $212,000 | $202.90 |
| $106,001 – $133,000 | $212,001 – $266,000 | $289.10 |
| $133,001 – $167,000 | $266,001 – $334,000 | $375.30 |
| $167,001 – $200,000 | $334,001 – $400,000 | $461.50 |
| $200,001 – $500,000 | $400,001 – $750,000 | $547.60 |
| Above $500,000 | Above $750,000 | $594.50 |
That’s the difference between $202.90/month and $594.50/month — nearly $400 more per person, per month — just because of your income level.
A married couple both at the top tier? $1,189/month in Part B premiums alone, before any drug plan costs.
Where Does Social Security Come In?
Here’s where it gets personal.
SSA uses your Modified Adjusted Gross Income (MAGI) from two years prior to determine your IRMAA tier. That includes:
- Wages or self-employment income
- Investment gains and dividends
- Required Minimum Distributions (RMDs) from IRAs and 401(k)s
- Rental income
- And yes — Social Security benefits themselves can become taxable and count toward your MAGI
So if you’re sitting on a large IRA and turn 73 (the current RMD age), those forced withdrawals could push you into a higher IRMAA bracket even if you don’t “need” the money.
The Social Security Timing Trap
Here’s what catches people completely off guard:
The year you start Social Security matters for IRMAA.
If you take Social Security early (at 62), you’re drawing benefits for more years — and potentially more years of that income counting toward your MAGI. Delay it to 67 or 70, and you may actually reduce the number of high-income years that trigger IRMAA surcharges.
Conversely, large one-time income events — selling a business, Roth conversions, liquidating investments — can spike your MAGI in a single year and trigger IRMAA two years later, right when you’re newly on Medicare.
The IRMAA Appeal Process (Most People Don’t Know This)
IRMAA is based on income from two years ago. But life changes.
If you retired, sold your business, or had another life event that significantly reduced your income since that baseline year, you can appeal your IRMAA determination.
The SSA will accept a “life-changing event” appeal if you experienced:
- Retirement or reduction in hours
- Death of a spouse
- Divorce or annulment
- Loss of income-producing property
- Loss of pension income
You file SSA Form SSA-44. If approved, you pay the lower premium going forward — often saving hundreds per month.
How to Avoid the IRMAA Trap
Smart planning can legally reduce your IRMAA exposure:
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Time large income events carefully. Roth conversions, asset sales, and large withdrawals taken in a year you’ll be on Medicare can push you into IRMAA territory for two years running.
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Coordinate RMD strategy. Rather than taking large RMDs all at once, discuss a multi-year strategy with your advisor to spread the income.
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Optimize your Social Security filing date. Your RSSA® certified advisor can model exactly when to take benefits given your full financial picture — including projected IRMAA exposure.
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Review income sources. Not all income counts equally toward MAGI. Municipal bond interest, for example, can count. Health savings account (HSA) withdrawals generally don’t.
Why This Matters for Your Retirement Budget
Most retirement planning underestimates Medicare costs. People assume they’ll pay the base premium — but if your combined income (Social Security + RMDs + investments) puts you in the second IRMAA tier, you’re looking at $173 extra per month per person.
Over a 20-year retirement, that’s $41,520 per person in unexpected Medicare costs — if you don’t plan around it.
The Bottom Line
Medicare and Social Security don’t exist in separate boxes. They’re intimately connected — and most people only discover the connection when they get their first Medicare bill.
The good news: with proper planning, IRMAA is largely avoidable or reducible. The timing of Social Security, the sequencing of Roth conversions, and the management of your RMDs can all be coordinated to minimize your lifetime Medicare costs.
That’s exactly the kind of integrated planning Rodney Cummings provides at Legacy Wealth Services.
Get a Free Medicare + Social Security Review
Whether you’re approaching 65 or already on Medicare, understanding how your income affects your premium is critical — and often overlooked.
Rodney Cummings is both a licensed Medicare advisor and an RSSA® Certified Social Security Analyst. He can run the numbers on your specific situation and identify potential IRMAA exposure before it hits your wallet.
📞 Call: 503-832-8555 📄 Review your Medicare options → 🔎 Social Security analysis → ❓ Medicare FAQ → | Social Security FAQ →
No cost. No obligation. Just clarity.
Rodney Cummings | Legacy Wealth Services | Oregon License #18847712 | Licensed in 26 states