Why Your Medicare Premium Is So High After Retirement

If you retired this year and your Medicare premium looks wrong, read this before you pay it

You retire, your paycheck stops, and then Medicare acts like you’re still earning your old salary.

That feels ridiculous.

But in many cases, that is exactly how the premium calculation works.

Medicare usually looks at your income from 2 years ago when deciding whether you owe higher premiums. So if you retire in 2026, your 2026 Medicare premium may be based on your 2024 tax return. If 2024 was one of your last high income working years, Medicare may still think you are rich, even if your current retirement paycheck says otherwise.

The extra charge is called IRMAA, which stands for Income Related Monthly Adjustment

Amount.

Terrible name but it costs you real money.

Why your Medicare premium can jump after retirement

For 2026, the standard Medicare Part B premium is $202.90 per month.

But if your income crosses certain thresholds, your premium can go higher. For a married couple filing jointly, the first IRMAA bracket starts when modified adjusted gross income is over $218,000. At higher income levels, Part B can rise to $405.80 per month per person, then higher from there. CMS.gov

This adds up quickly.

For a married couple, going from $202.90 each to $405.80 each is an extra $405.80 per month or $4,869.60 per year.

That’s a used car payment, a nice family trip, or a big chunk of your property taxes. And it shows up just when you are trying to figure out what your new retirement budget looks like.

So it makes sense when a new retiree opens the Medicare notice and thinks, “How in the world can my premium be this high? I’m retired now.”

The answer is usually simple. Medicare is looking backward.

The 2 year lookback is the problem

Medicare does not automatically know your current retirement income.

It gets income information from the IRS. Usually, that means your tax return from 2 years ago. So if you had a high salary, bonus, RSU income, deferred compensation payout, business income, or a big capital gain 2 years ago, that old income can affect your Medicare premium today.

This is where retirement gets annoying.

Your real life changed. The government spreadsheet has not caught up yet.

However, there is good news. If your income dropped because you stopped working or reduced your hours, you can ask Social Security to take another look. The formal request is called a new initial determination.

That sounds like something a committee invented after drinking cold coffee in a windowless room. But the idea is straightforward.

You are asking Social Security to use a more recent income number because the old one no longer matches your life.

When you can ask Social Security to lower IRMAA

Social Security allows you to request a lower IRMAA after certain life changing events.

Common examples include…

• Retirement or work stoppage.

• Work reduction.

• Death of a spouse.

• Divorce.

• Loss of income producing property.

• Loss of pension income.

• Employer settlement payment.

For many retirees, the big one is work stoppage. You had income from work. Then you retired. Your income dropped. Medicare is likely still using the old number.

The form you need is SSA 44. It lets you report the life changing event, estimate your new income, and ask Social Security to use more recent income information.

You will generally need to show evidence of the life changing event and your income. For work stoppage or reduction, that may include a signed statement from your employer, pay stubs, or other proof. If you are using an estimated income number, Social Security may later compare that estimate with your filed tax return.

So don’t make up a number. This will create a bigger problem later on.

IRMAA is bigger than the first year of retirement

Here is where people miss the bigger planning issue.

IRMAA is often framed as a Medicare problem. It is really a retirement income planning problem.

Your Medicare premium can be affected by decisions that seem completely separate from Medicare. A large IRA withdrawal. A Roth conversion. A capital gain from selling investments. A rental property sale. A deferred compensation payout. A big taxable event in the wrong year.

All of those can push income higher. Higher income can trigger IRMAA. IRMAA can make Medicare more expensive.

So when people ask, “Should we do Roth conversions after retirement?” the answer is rarely just about federal tax brackets. You also have to ask what that conversion does to Medicare premiums, state taxes, cash flow, and your broader withdrawal plan.

A Roth conversion that looks smart in isolation can still blow up the surrounding plan if nobody is watching the whole picture.

This is why retirement planning gets more complicated right when people want life to get simpler.

During your working years, income usually comes from a paycheck. Taxes are withheld. Benefits are tied to your employer. You may not like the system, but at least the system has rails.

In retirement, you start building your own paycheck. Social Security, pensions, IRA withdrawals, brokerage accounts, Roth accounts, cash, maybe part time income. Every dollar has a source, and every source can affect something else.

Medicare premiums are one of those “something else” items.

What to do if your premium looks too high

If you recently retired and received an IRMAA notice, don’t assume the number is permanent.

First, check which tax year Social Security used. The notice should tell you.

Next, compare that income to your current or expected retirement income. If the old number is much higher because you stopped working or reduced work, SSA 44 may be worth reviewing.

You can also use Social Security’s webpage to help after a life changing event. You can find it here: Request to lower an Income Related Monthly Adjustment Amount.

Then look at whether your new income is low enough to move you into a lower IRMAA bracket. The life changing event matters, but the income drop has to matter too. If your income is still above the same threshold, the form may not change much.

Finally, look forward.

If you are planning a Roth conversion, large IRA withdrawal, sale of appreciated investments, or any other big taxable event, ask what it may do to Medicare premiums 2 years from now.

The mistake is treating tax planning and Medicare planning like they live in separate rooms.

They don’t.

They share a wall. Sometimes the wall is paper thin.

Why this matters for Wichita retirees

A lot of Wichita retirees have done the hard part.

They saved. They worked. They paid off debt or are close to it. They built up a 401(k), IRA, pension, brokerage account, or business value.

Now they are trying to turn what they already have into a retirement paycheck they can trust.

Then Medicare shows up with a premium that looks wrong.

That creates the same old retirement question in a new costume…

“What am I missing?”

Sometimes the answer is a form. Sometimes the answer is better tax planning. Sometimes the answer is that the premium is accurate for now and should fall later when lower retirement income shows up in the lookback.

But you want to know which one applies before you spend thousands more than you expected.

Before you assume the premium is just the premium, ask a better question.

What income number is Medicare using, and does that number still match your life?

Talk With Jonathan

Disclaimer: This article is for educational purposes. It is not personalized advice, a recommendation, or an offer. Decisions about Roth conversions, pensions, distributions, Medicare premiums, and taxes depend on your full plan and current law. Talk with a CFP or CPA before acting.