IRMAA—Income-Related Monthly Adjustment Amount—is an added surcharge on Medicare Part B and Part D premiums for higher‑income retirees. It’s calculated using your Modified Adjusted Gross Income (MAGI) from two years prior , which means today’s decisions can affect future premiums. Because IRMAA thresholds are cliff-based, even a small increase in income can trigger a much higher premium. With the right income, tax, and withdrawal strategies, you can often reduce or avoid unnecessary IRMAA surcharges.

At Symphony Retirement Partners, a retirement planning firm serving Austin, Round Rock, and San Antonio, we help retirees coordinate taxes, income timing, and Medicare decisions—not just enroll in coverage. Below is a practical, conversational guide you can use to understand how IRMAA works and what steps may help you avoid higher premiums.

What Is IRMAA and Why Does It Matter?

IRMAA is an extra charge added to Medicare Part B and Part D premiums for individuals and couples whose income exceeds certain federal thresholds. Medicare looks at your tax return from two years earlier—so your 2024 income affects your 2026 premiums. That two‑year delay is why planning ahead is essential.

IRMAA is calculated based on your Modified Adjusted Gross Income (MAGI), which includes wages, Social Security benefits (taxable portion), investment income, IRA withdrawals, Roth conversions, and even required minimum distributions (RMDs). This means that many retirement income decisions directly influence whether you fall into a higher Medicare premium bracket.

For deeper guidance on Medicare rules and coordination, visit our Social Security & Medicare Guidance page.

Key Strategies to Help Reduce IRMAA

 

1. Time Roth Conversions Intentionally

Roth conversions can be incredibly valuable for long‑term tax planning, but they increase your MAGI in the year you convert. That means a large conversion in 2024 could raise your Medicare premiums in 2026.

• Spread conversions over multiple years instead of doing one large conversion
• Convert during lower‑income years—such as early retirement before Social Security begins
• Monitor IRMAA thresholds closely to avoid crossing a bracket

Thoughtful timing can reduce future Medicare costs while still building tax‑free retirement income. Learn more about tax‑efficient strategies on our Tax Planning in Retirement page.

2. Manage Taxable Income Across Multiple Accounts

Because IRMAA is income‑based, controlling how much taxable income you realize each year becomes essential. Consider:

• Balancing withdrawals across taxable, tax‑deferred, and Roth accounts
• Using capital gains strategically in years when income is lower
• Leveraging Qualified Charitable Distributions (QCDs) after age 70½ to offset RMD income

Even seemingly small decisions—like selling an investment or taking extra IRA withdrawals—can push you into a higher IRMAA tier if not planned carefully.

3. Plan Your Withdrawal Sequence Thoughtfully

A smart withdrawal sequence can help you stay under IRMAA thresholds. For many retirees, this means:

• Using taxable accounts early in retirement
• Managing IRA withdrawals before RMDs begin
• Letting Roth accounts grow for later years

The goal isn’t only tax efficiency—it’s about keeping your MAGI aligned with Medicare premium thresholds throughout retirement.

4. Coordinate Social Security With Medicare

Because Social Security benefits are taxable (up to 85%), the year you begin receiving them can change your MAGI significantly. Starting benefits early could push your income higher just as you hit Medicare eligibility.

Timing Social Security, IRA withdrawals, and Roth conversions together—rather than as isolated decisions—is one of the most effective ways to avoid unnecessary IRMAA surcharges.

Austin and San Antonio Retirees: Why IRMAA Requires Advance Planning

Because IRMAA is based on income from two years earlier, many retirees don’t realize they triggered higher premiums until they receive a letter from Social Security. At Symphony Retirement Partners, we help our clients in Austin, Round Rock, and San Antonio look ahead so today’s tax and withdrawal choices align with future Medicare costs.

We don’t just review insurance options—we coordinate taxes, income, Social Security, and Medicare as part of one connected plan. Many retirees are surprised by how much they can save when these decisions are made intentionally.

Want to Understand IRMAA in More Detail?

We regularly offer educational sessions and Q&A opportunities through our firm’s webinar series. You can explore upcoming sessions here: Symphony Retirement Partners Webinars.

Your Next Step: Build a Plan That Minimizes IRMAA

If you want to avoid higher Medicare premiums, timing and coordination matter. Symphony Retirement Partners can help you map out a clear strategy for managing income, structuring withdrawals, planning Roth conversions, and aligning Social Security with Medicare—so you stay in control of both your taxes and your healthcare costs.

Schedule a free consultation to start building a Medicare‑ and tax‑efficient retirement plan tailored to your goals.