Medicare & IRMAA: The "Success Tax" on Retirement
by Danielle Woods
There is a fallacy among many retirees that their tax liabilities go down after they stop working. That is often untrue for anyone who receives taxable earnings on brokerage accounts, receives Social Security, takes distributions from pretax retirement accounts, engages in Roth conversion strategies, or any combination of these. All of these sources are reported on your tax return and often result in higher than anticipated annual taxable income. Taxable income impacts available tax deductions as well as the cost of Medicare supplement premiums impacted by IRMAA. IRMAA is a surcharge added to your monthly Medicare Part B (medical insurance) and Part D (prescription drug) premiums if your income exceeds certain thresholds. You will be informed of this impact via a letter from the Social Security Administration. The letter informs you that your Medicare premiums are going to be significantly higher than you anticipated. Suddenly, that feeling of financial security is replaced by confusion and budgeting anxiety.
The Shock of the "Success Tax"
When you enter retirement, you expect your expenses to become more predictable. Discovering that your healthcare costs are suddenly spiking may create a feeling of anger or frustration. It feels like you are being penalized for being a diligent saver. You worked hard to accumulate a healthy nest egg, but now it seems the government is taking an unexpected cut right out of your monthly budget.
This frustration often stems from financial disorganization. If you are holding various retirement accounts and taking withdrawals without a coordinated strategy, you lack visibility into how those withdrawals impact your overall tax picture. This unpredictability creates a constant, low level stress. You hesitate to spend money on home repairs or a meaningful family vacation because you are terrified of triggering another hidden tax or running out of funds for your own long term care. You want to enjoy your wealth, but the administrative burden of figuring out the rules keeps you frozen.
The Reality of IRMAA Surcharges
When retirees finally sit down to look at why their Medicare costs are spiking, they are introduced to IRMAA. This stands for the Income Related Monthly Adjustment Amount, and it acts as a stealth "success tax" on retirees.
Unlike many other government benefits, Medicare Part B premiums are tied directly to your income. In 2026, the standard Part B premium is $202.90 per month. However, the government looks at your Modified Adjusted Gross Income from two years prior to determine if you need to pay a surcharge.
The thresholds for these surcharges frequently catch successful retirees off guard. In 2026, if you are a single filer and your Modified Adjusted Gross Income (MAGI) crosses $109,000, you are hit with an IRMAA surcharge that raises your monthly premium. For a married couple filing jointly, the surcharge triggers if your MAGI crosses $218,000. The more you earn, the higher the tiers climb, with the highest surcharge hitting joint filers earning over $750,000.
If you take a large, unplanned withdrawal from a pre tax traditional IRA to buy a new car or pay for a medical event, that withdrawal counts as income. This can easily push you over the IRMAA threshold, effectively shrinking your Social Security check and throwing your monthly budget into chaos. We help you map out an efficient, tax optimized withdrawal strategy using a mix of taxable and tax free accounts so you can avoid these hidden cliffs and budget with absolute confidence.
Watch: Fall 2025 Financial Planning Checklist
Staying ahead of Medicare surcharges requires proactive planning before the year ends. In this episode of Connecting the Dollars, Emily and Amanda walk through the reality of rising healthcare costs and the potential for shifts in Medicare. They cover why you must do a fall financial review to evaluate your income, manage capital gains, and organize your withdrawals so you are not caught off guard by changing federal rules.
You Do Not Have to Navigate Medicare Alone
You deserve to enjoy your retirement without the constant worry that a hidden surcharge is going to wreck your budget. You do not have to figure out the complex Medicare and tax rules by yourself. If you are ready to move past the anxiety, get your accounts organized, and confidently plan for your future, we are happy to talk.