Roth Conversion: Why Ages 62–72 Can Make or Break Your Retirement

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If you’re between the ages of 62 and 72, you may be sitting in one of the most financially significant windows of your entire retirement journey — and most people don’t even realize it. A thoughtful Roth conversion strategy during this decade can dramatically reshape how much of your retirement savings you actually keep versus hand over to the IRS. Whether you’ve recently stepped away from a career, are winding down a business on the Treasure Coast, or are simply trying to make sense of your IRAs and 401(k)s before required minimum distributions kick in, understanding this window matters more than almost any other financial decision you’ll face in retirement.

Why Ages 62–72 Create a Unique Planning Window

There’s a reason financial educators often refer to the years between 62 and 72 as the “Roth conversion sweet spot.” During this period, many retirees experience a meaningful dip in their taxable income. You may have left your full-time salary behind but haven’t yet started drawing Social Security, and your required minimum distributions haven’t begun. That combination — lower income, fewer forced withdrawals, and decades of tax-deferred savings just sitting in traditional IRAs — creates a natural opportunity to move money into a Roth IRA at a lower tax cost than you might face at any other point in your life.

Think about what happens after age 73: the IRS requires you to start taking money out of your traditional retirement accounts whether you need it or not, and those withdrawals are taxable. If your portfolio has grown significantly — as many Treasure Coast retirees’ accounts have over the past decade — those RMDs can push you into a higher tax bracket, increase your Medicare premiums through IRMAA surcharges, and even affect how much of your Social Security benefit gets taxed. A well-executed Roth conversion strategy during the window before all of that kicks in can reduce the size of those future forced withdrawals and give you greater control over your tax situation for decades to come.

This isn’t about exotic financial products or complex schemes. It’s simply about recognizing that tax rates are known quantities today, and that choosing to pay a predictable, potentially lower tax now — rather than an unknown, potentially higher tax later — can be a sound, logical approach to retirement planning. The key is to be intentional, systematic, and informed before the window closes.

Roth Conversion Strategy: The Basics You Need to Know

At its core, a Roth conversion strategy involves moving money from a traditional IRA, SEP IRA, SIMPLE IRA, or old 401(k) into a Roth IRA. When you make this move, you pay ordinary income tax on the amount converted in the year you convert it. After that, the money grows tax-free inside the Roth, and qualified withdrawals in retirement are completely tax-free as well. There are no required minimum distributions on Roth IRAs during the original owner’s lifetime, which gives retirees tremendous flexibility in managing their income year to year.

The Roth conversion strategy is not a one-size-fits-all decision, and it’s not something you simply do once and forget about. Most financial educators recommend what’s called a “partial conversion” approach — converting just enough each year to fill up a lower tax bracket without spilling into a higher one. For example, if your combined income from pension payments, part-time consulting, and other sources puts you in the 12% federal bracket, you might convert enough additional dollars to use up the remaining room in that bracket before crossing into 22%. This bracket-filling approach can allow you to convert significant sums over several years while keeping your tax bill manageable.

According to the IRS guidance on Roth IRAs, there is no income limit on who can perform a Roth conversion — that limitation applies only to direct Roth IRA contributions, not conversions. This means that even high-earning retirees who previously couldn’t contribute to a Roth IRA directly are able to use a conversion to gain access to the tax-free growth benefits this account type offers. Understanding this distinction is an important foundational piece of any Roth conversion strategy.

RMDs and the Ticking Clock After Age 73

One of the most compelling reasons to act on a Roth conversion strategy before age 73 is the looming reality of required minimum distributions. The SECURE 2.0 Act moved the RMD starting age to 73 for most retirement savers, and to 75 for those born in 1960 or later. While that extension bought some retirees a little more runway, the fundamental math hasn’t changed: the larger your traditional IRA or 401(k) balance at the time RMDs begin, the larger your mandatory taxable withdrawals will be — and the less control you’ll have over your income in retirement.

Here’s a scenario that plays out for many Treasure Coast retirees: a couple retires at 63 with $1.2 million in traditional IRAs. They live comfortably off Social Security and a small pension, barely touching those IRAs for ten years. By the time RMDs begin, compound growth has pushed that balance to $1.8 million or more. Now the IRS is requiring them to withdraw — and pay taxes on — tens of thousands of dollars a year, whether they need the cash or not. A disciplined Roth conversion strategy implemented during those years between retirement and age 73 could have meaningfully reduced the size of that taxable pool and, in turn, the size of those forced distributions.

It’s also worth noting that RMD amounts grow over time. The IRS calculates your RMD by dividing your account balance by a life expectancy factor that decreases each year, meaning that even if your balance stays flat, your required withdrawal grows. If your portfolio continues to grow, that withdrawal amount grows even faster. Converting a portion of your traditional IRA each year during the 62–72 window is one of the most practical tools available for managing this future obligation.

IRMAA, Medicare, and the Hidden Tax on Conversions

Any serious discussion of a Roth conversion strategy has to include a conversation about IRMAA — the Income-Related Monthly Adjustment Amount. IRMAA is a surcharge added to your Medicare Part B and Part D premiums when your income exceeds certain thresholds. In 2025, those thresholds start at $106,000 for individuals and $212,000 for married couples filing jointly, based on income from two years prior. If a large Roth conversion bumps your income above those thresholds, you could end up paying significantly higher Medicare premiums the following year.

This is one of the most commonly overlooked costs associated with a Roth conversion strategy, and it’s a reason why careful planning around conversion amounts matters so much. You can find current IRMAA brackets and Medicare premium information directly at Medicare.gov. The goal isn’t to avoid conversions out of fear of IRMAA — in many cases, even with the surcharge, the long-term tax savings from a Roth conversion still outweigh the short-term cost. But it does mean that bumping just slightly over an IRMAA threshold can be an expensive mistake that could have been avoided with smarter sizing of the conversion amount.

There’s also the question of how Roth conversions interact with Social Security taxation. Up to 85% of your Social Security benefit can be taxable depending on your “combined income” — which includes half of your Social Security benefit plus all other income, including Roth conversions. In the years before you claim Social Security, a Roth conversion strategy may actually be cleaner to execute because you don’t have that additional layer of complexity. Once Social Security is in the picture, every dollar you convert needs to be analyzed not just for its bracket impact, but for how it affects the taxable portion of your benefit and your Medicare costs simultaneously.

Building a Smart Roth Conversion Strategy Year by Year

The most effective Roth conversion strategy isn’t a single dramatic move — it’s a multi-year plan built around your unique income picture, tax brackets, Medicare situation, and estate planning goals. Here’s a framework that many retirees in the 62–72 window find helpful to think through with a financial professional:

• Map your income sources: Before deciding how much to convert, get a clear picture of what income you’re already expecting each year — Social Security (if started), pensions, part-time work, rental income, and any other sources. The gap between that total and the top of your current tax bracket is your potential conversion “room.”
• Run a tax projection each year: Tax situations change annually. Your investment income fluctuates, deductions shift, and tax laws evolve. Treat your Roth conversion strategy as an annual exercise, not a set-it-and-forget-it plan.
• Pay taxes from non-retirement funds: When possible, pay the taxes owed on a Roth conversion from a taxable savings or brokerage account rather than from the converted IRA funds themselves. This maximizes the amount that actually enters the Roth and can meaningfully improve the long-term outcome of the strategy.
• Account for the five-year rule: Each Roth conversion has its own five-year holding period for penalty-free withdrawal of converted principal. This is generally less of a concern for retirees over 59½, but it’s worth understanding before acting.
• Consider your heirs: Roth IRAs can be a powerful legacy tool. Unlike traditional IRAs, Roth IRAs pass to heirs income-tax-free, meaning a Roth conversion strategy today can have lasting benefits for your children or grandchildren tomorrow.
• Time conversions before year-end: Roth conversions must be completed by December 31 of the tax year in which you want them to count. Don’t wait until the last minute to begin conversations with your tax and financial advisors.

No two retirees have identical circumstances, which is why a personalized, year-by-year approach matters far more than any general rule of thumb. The goal of an effective Roth conversion strategy is not to convert as much as possible, nor as little as possible — it’s to convert the right amount in the right years to optimize your lifetime tax picture.

What Florida Retirees Should Consider

Living in Florida adds a meaningful dimension to Roth conversion planning that residents of high-tax states don’t always appreciate. Florida has no state income tax, which means that every dollar you convert to a Roth is taxed only at the federal level. In a state like California or New York, a Roth conversion might trigger both federal and state income taxes, sometimes pushing the combined marginal rate well above 30%. On the Treasure Coast, you’re working with federal rates only — which makes the economics of a Roth conversion strategy even more favorable than they would be elsewhere in the country.

This is worth pausing on, because many retirees who moved to Stuart, Port St. Lucie, or Hobe Sound from the Northeast or Midwest may still be mentally anchored to the tax environment they left behind. The absence of state income tax isn’t just good news for your ongoing retirement income — it also lowers the effective cost of doing Roth conversions. For retirees and pre-retirees on the Treasure Coast, this is one of the genuine financial advantages of calling Florida home, and building it into your Roth conversion strategy can meaningfully change the math in your favor.

There’s also an estate planning angle that Florida retirees should keep in mind. The federal estate tax exemption was significantly increased through the One Big Beautiful Budget Act signed in 2025, which provides more room for wealth transfer planning. Even so, a Roth IRA with a named beneficiary passes outside of probate and provides heirs with tax-free income — two features that make it a particularly efficient asset in a Florida estate plan. The team at The 1715 Financial Group works specifically with Treasure Coast retirees navigating these decisions, and conversations like this are at the core of what thoughtful retirement income planning looks like in our area.

Your Next Step

The decade between ages 62 and 72 is genuinely one of the most powerful planning windows in a retiree’s financial life. The combination of lower income, a gap before RMDs, and the flexibility to act before Medicare surcharges and Social Security taxation fully complicate the picture creates a limited-time opportunity to restructure where your money lives and how it will be taxed going forward. A well-designed Roth conversion strategy won’t look the same for everyone, but for many retirees in this age range, doing nothing — simply waiting — is itself a financial decision, and often not the optimal one.

The goal of understanding a Roth conversion strategy isn’t to feel anxious about the years ahead — it’s to feel empowered. When you understand how the pieces fit together, you can make decisions with clarity and confidence rather than reacting to tax bills that could have been smaller. Whether you’re just starting to think about this or you’ve been watching your traditional IRA grow for years wondering what to do, the most important step is the same: get educated, run the numbers, and work with people who understand your full financial picture.

If you’d like to hear a deeper conversation about this topic, we covered it in detail on The 1715 Podcast episode on Roth conversions. Give it a listen on your next walk along the waterfront — it just might be one of the most useful 30 minutes you spend on your retirement planning this year. And if you’re ready to talk through how a Roth conversion strategy might apply to your own situation, we’d love to start that conversation.

This content is for educational purposes only and does not constitute investment advice. Past performance is not indicative of future results. Please consult a qualified financial professional before making any financial decisions.

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