For many retirees, healthcare expenses become one of the most significant financial considerations in retirement. Medicare offers essential medical coverage, but not all beneficiaries pay the same amount for it. A lesser-known factor that can substantially increase your costs is IRMAA, or the Income-Related Monthly Adjustment Amount.
IRMAA is an income-linked surcharge on Medicare Part B (medical insurance) and Part D (prescription drug coverage) premiums. Unlike base Medicare premium costs that apply broadly, IRMAA affects only those with higher incomes, and it can quietly erode retirement budgets if not planned for.
What IRMAA Means and How It Works
IRMAA stands for Income-Related Monthly Adjustment Amount. It is a surcharge added to the regular Medicare Part B and Part D premiums for people whose income exceeds certain thresholds. Unlike the base Medicare premium, which most beneficiaries pay regardless of income, IRMAA is designed to make higher-income beneficiaries contribute more toward the cost of the program.
The Social Security Administration (SSA) determines IRMAA eligibility by reviewing your Modified Adjusted Gross Income (MAGI) from tax returns filed two years prior. For example, your 2024 MAGI affects your 2026 Medicare premiums. Income for IRMAA purposes includes your adjusted gross income plus tax-exempt interest. Filing jointly or separately can also change where you land on the income scale.
How Income Affects Your Medicare Costs
According to current CMS guidance, the standard Medicare Part B premium for 2026 is $202.90 per month, but higher-income beneficiaries pay more because of income-related adjustments. Understanding IRMAA, how it’s calculated, why it exists, and how to manage its impact is an important part of comprehensive retirement and tax planning.
How Income Determines Your Medicare Premiums
Most Medicare beneficiaries pay the standard Part B premium, but if your income exceeds the threshold, you pay a higher rate. For 2026, Medicare uses income reported in 2024 to assess whether you owe IRMAA, and it applies on a sliding scale with multiple income brackets.
For example, individuals with MAGI below ~$109,000 and couples with MAGI below ~$218,000 pay only the standard Part B premium ($202.90). Those above these thresholds face higher Part B and Part D premiums based on incremental increases in income. In 2026, Part B IRMAA adjustments range from modest surcharges to several hundred dollars extra per month at the highest brackets. This structure means that a seemingly small change in income can trigger a jump into a higher IRMAA tier, leading to significantly higher Medicare costs over time.
Common Triggers That Increase Your IRMAA
Because IRMAA is tied to MAGI from two years prior, certain financial events can unexpectedly push you into higher Medicare premiums:
- Large required minimum distributions (RMDs) from retirement accounts
- Capital gains from selling investments or property
- Roth conversions that increase taxable income in the conversion year
- A one-time bonus or business sale near retirement
- Significant investment income or dividends
These income spikes can also raise your Medicare costs for several years if not planned for carefully.
Why IRMAA Catches Many Retirees Off Guard
Many individuals do not realize that IRMAA applies until they receive an SSA notice with their adjusted premium amount. Because the calculation uses income from two years prior, the IRMAA determination may not reflect your current income, for example, after retirement or significant lifestyle changes.
It’s also important to note that IRMAA applies separately to both Medicare Part B and Part D premiums, meaning your total healthcare cost can rise more than just one surcharged amount.
Strategies to Minimize IRMAA Through Planning
While income-related adjustments may seem unavoidable for high earners, there are planning approaches that can help reduce IRMAA exposure:
- Income smoothing: Timing withdrawals from retirement accounts or selling assets across years to avoid large one-time spikes in MAGI.
- Roth conversion timing: Converting traditional IRA assets to Roth IRAs carefully, so the income is spread out and does not push MAGI into higher tiers.
- Withdrawal sequencing: Coordinating distributions from taxable, tax-deferred, and tax-free accounts to manage MAGI.
- Life event appeals: If your income has dropped due to retirement, divorce, or the death of a spouse, you may qualify to file Form SSA-44 to request a redetermination of your IRMAA.
These strategies often require coordination with your tax adviser and financial planner to balance immediate tax impact with longer-term cost control.
How Financial Planning Helps Control Healthcare Costs in Retirement
IRMAA is not just a Medicare issue; it’s a retirement income planning issue. Without proper preparation, retirees can find themselves locked into higher Medicare premiums for several years because of income spikes that were not planned.
A comprehensive retirement plan considers:
- Income projections
- Taxable events and timing
- Required minimum distributions
- Social Security timing
- MAGI management
- Medicare premium forecasting
By modeling income and tax impacts years ahead, you can better control how income flows affect your overall retirement expenses.
Berger Financial Group’s Approach to Healthcare-Aware Retirement Planning
Managing IRMAA and related Medicare costs requires visibility into your income today and how future events might influence your MAGI. As part of our comprehensive retirement and financial planning services, Berger Financial Group proactively integrates IRMAA considerations into broader retirement income strategies by:
- Projecting future MAGI outcomes and potential Medicare premium impacts
- Modeling strategies, such as Roth conversion timing, to reduce future IRMAA exposure
- Coordinating with your CPA on taxable event impacts
- Integrating healthcare cost forecasting with broader retirement income planning
- Reviewing income sequencing annually as part of a holistic income strategy
Our focus is on helping clients avoid unnecessary surcharges while aligning withdrawal strategies with long-term financial security.
Smart Income Planning Starts With Understanding IRMAA
IRMAA can significantly increase healthcare costs for retirees with higher incomes, but it does not have to be an unavoidable burden. A thoughtful planning approach that looks at income, MAGI, and timing of taxable events can help you manage and potentially reduce IRMAA impact.
Concerned about rising medicare costs? Berger Financial Group helps retirees integrate Medicare premiums into long-term income planning. If you want to understand how IRMAA may affect your retirement plan or build strategies to minimize future Medicare costs, we encourage you to contact Berger Financial Group today. Together, we can develop a plan tailored to your income, goals, and long-term financial confidence.
