Taxes in Retirement: What Most People Miss

When most people picture retirement, they imagine lower taxes. After all, the paycheck stops… shouldn’t the tax bill go down too?

Not always.
In reality, taxes in retirement can be one of the biggest surprises retirees face. Between Social Security, required minimum distributions (RMDs), and Roth conversions, it’s easy to feel blindsided.

So today, let’s walk through how thoughtful planning can keep taxes from derailing your retirement. And to make this real, I’ll use an example couple — Dave and Maria — to show how all the moving parts fit together. (They’re hypothetical, not real clients.)

Before we get into the details, here’s the key thing to understand:

Their tax bracket doesn’t stay the same throughout retirement.
And that’s true for most people.

When Maria retires, their income dips and they briefly fall into a lower bracket. But the moment RMDs begin, their taxable income jumps again. Even though these charts involve assumptions that will never be perfect — markets move, inflation shifts — they help us understand the direction of their tax exposure so we can plan around it.

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Here are a few factors to be aware of.

1. Social Security Taxation

Dave already receives about $28,000 a year in Social Security, and Maria will eventually add about $22,000.

But here’s the part many people miss.

Up to 85% of your Social Security can be taxable, depending on your other income.

For Dave and Maria, their withdrawals from retirement accounts — combined with Social Security — push them into a range where a portion of those benefits becomes taxable. This surprises many retirees who expected Social Security to be tax-free.

2. Required Minimum Distributions (RMDs)

At age 75, Dave and Maria have to take RMDs from their pre-tax accounts.

RMDs can add tens of thousands of dollars of taxable income every single year.

And because RMDs grow as you age (as accounts ideally grow), retirees often find themselves forced into higher tax brackets — even if their lifestyle hasn’t changed.

For Dave and Maria, RMDs push them right back into a higher bracket later in retirement.

3. Roth Conversions

One way to soften future RMDs is to convert part of a pre-tax retirement account into a Roth IRA.

With a Roth conversion:

• You pay taxes now
• In exchange for tax-free withdrawals later

For Dave and Maria, making small, targeted Roth conversions before age 73 could help lower their lifetime tax bill. But conversions have to be done carefully — pushing income too high could lead to Medicare surcharges or unnecessary taxes.

This is one of those areas where running the numbers matters.

4. Medicare IRMAA Surcharges

Higher income can increase your Medicare premiums through something called IRMAA — the Income-Related Monthly Adjustment Amount.

For many retirees, IRMAA shows up unexpectedly.

For Dave and Maria, their combination of withdrawals plus Roth conversions could push them over certain thresholds. IRMAA isn’t always bad — sometimes a small surcharge is worth it for long-term tax savings — but it should be part of the plan, not a surprise.

5. Year-Round Tax Planning

Here’s the real takeaway:

Retirement tax planning isn’t something you do once a year — it’s something you revisit often.

Because everything is connected:

• How much you withdraw
• When you claim Social Security
• Whether you convert to Roth
• How RMDs impact your bracket

For Dave and Maria, checking in yearly and running “what-if” scenarios gives them clarity and confidence.

Final Thoughts

Taxes in retirement feel complicated because they are — but they’re also manageable with the right strategy.

By looking ahead, coordinating income sources, and understanding how each decision affects the next, retirees can protect their savings, stay on track, and avoid costly surprises.

This article is general education only — not personalized advice. If you’d like help building a retirement tax strategy that fits your life, your income, and your goals, consider working with a qualified financial planner who can walk through these decisions with you.