Retirement can change a lot about your financial life.
Your paycheck may stop. Your income may come from different sources. And the financial picture you have today may look nothing like it did a couple of years ago.
But there's one expense that may still be looking backward: your Medicare premiums.
If you're paying an income-related adjustment called IRMAA, the amount may be based on income you reported before your circumstances changed.
So what happens when your income is lower now?
The answer depends on why your income changed.
Why Your Medicare Premiums May Reflect an Earlier Income
IRMAA stands for Income-Related Monthly Adjustment Amount.
It's an additional premium amount that applies to Medicare Part B and Part D for certain beneficiaries.
Social Security generally determines IRMAA using federal income tax information from two years earlier.
For example, a 2026 determination would generally use income reported on your 2024 tax return.
That's straightforward enough when your income is relatively consistent.
But retirement rarely follows a perfectly straight line.
You might have been working full-time in 2024 and retired in 2025. Or perhaps you've reduced your hours significantly.
Your current income could be much lower, yet your Medicare premiums may still reflect that earlier tax return.
That doesn't necessarily mean Social Security made an error. It may simply be using the information required under the normal process.
Some Life Changes May Allow a New Determination
Social Security recognizes that certain major life events can change someone's financial circumstances.
In some cases, those events may allow you to request a new IRMAA determination using more recent income information.
Qualifying life-changing events can include:
Work stoppage: You or your spouse stopped working, including retirement.
Work reduction: You or your spouse reduced working hours.
Certain marital changes: Marriage, divorce or annulment, or the death of a spouse.
Other specified events: Certain losses of income-producing property, pension income, or employer settlement payments under qualifying circumstances.
A qualifying event alone doesn't guarantee a lower premium. Social Security considers the applicable requirements, income information, and documentation.
Still, if you've experienced one of these changes, it's worth understanding whether the process applies to you.
Not Every Income Change Is Treated the Same Way
This is where people can understandably become confused.
Suppose you sold an investment and realized a substantial capital gain.
Or perhaps you completed a Roth conversion as part of a longer-term retirement strategy.
Either transaction may increase the income used to calculate IRMAA.
But an investment sale or Roth conversion, by itself, generally isn't considered a qualifying life-changing event for a new determination.
That distinction matters.
A reduction in income after retirement and the end of a one-time taxable transaction may produce similar-looking numbers on paper, but they aren't necessarily treated the same way under Social Security's rules.
There are also separate procedures for correcting an IRMAA determination when the underlying tax information is incorrect or has been amended.
The important thing is not to assume every situation follows the same process.
What Should You Do If Your Income Has Changed?
Start by gathering information rather than trying to solve everything at once.
1. Review your IRMAA notice.
Look at the income and tax year Social Security used to determine your adjustment.
2. Identify what changed.
Was it retirement? Reduced working hours? A marital change? A one-time financial transaction?
Write down what happened and when.
3. Review your current and expected income.
Compare your current financial circumstances with the income used in the determination.
4. Gather relevant documentation.
Depending on the situation, Social Security may request evidence of the life-changing event and updated income information.
5. Contact Social Security about the appropriate process.
Social Security handles IRMAA determinations and can explain whether a new determination or another review process may apply.
For qualifying life-changing events, the process commonly involves Form SSA-44.
Don't Lose Sight of the Bigger Financial Picture
It's understandable to focus on a higher Medicare premium, particularly when you've recently retired and are adjusting to a new income.
But Medicare costs are just one part of retirement planning.
A Roth conversion, for example, may increase taxable income and potentially affect future Medicare premiums. That doesn't automatically make the conversion a poor decision.
Likewise, avoiding a financial transaction solely to prevent an IRMAA increase may overlook other important tax and investment considerations.
The question isn't simply, "How do I pay the lowest Medicare premium?"
It's, "How does this decision fit into my overall retirement plan?"
That broader conversation can include your expected income, taxes, investments, cash flow, and healthcare expenses.
Start With the Information You Have
If your income has changed, you don't need to know every Social Security rule before asking a question.
You just need to understand what changed, which income figures are being used, and where to go for answers.
And if you'd like to discuss how retirement income decisions, taxes, and Medicare costs fit into your broader financial plan, we'd welcome a conversation.
Your financial circumstances may change over time. Understanding how those changes affect your plan is part of staying prepared.
Wisdom Financial is a DBA of John Boyer, Inc. Fee-based advisory services offered through John Boyer, Inc., a Registered Investment Advisor. Certified Financial Planner Board of Standards Inc. owns the certification marks CFP® in the U.S., which it awards to individuals who successfully complete CFP Board's initial and ongoing certification requirements.
