Should I Do a Roth Conversion? When It Makes Sense and When It Doesn’t

• Roth conversions can help reduce future taxes, but are not right for everyone.

• The best opportunities often occur after retirement but before Social Security and RMDs begin.

• Medicare premiums, Social Security taxes, and future tax brackets should be considered before converting.

• Partial conversions over multiple years are often more effective than one large conversion.

If you’ve accumulated a significant balance in a Traditional IRA or old 401(k), you’ve probably wondered whether converting some of those assets to a Roth IRA makes sense.

The answer is: it depends.

A Roth conversion can be an excellent tax planning strategy for some retirees and pre-retirees. In contrast, for others, it may create an unnecessary tax bill without providing much long-term benefit.

Rather than asking whether Roth conversions are “good” or “bad,” a better question is:

Is a Roth conversion appropriate for your current tax situation and long-term retirement plan?

The right answer depends on several factors, including:

• Your current tax bracket
• Your expected future tax bracket
• How much retirement income will you need
• When you plan to retire
• Whether you’ll be subject to Required Minimum Distributions (RMDs)
• Medicare premium considerations
• Your Social Security claiming strategy
• Your estate planning goals

A well-timed Roth conversion can reduce lifetime taxes, provide greater flexibility during retirement, and leave more tax-efficient assets to your heirs. But converting too much—or converting during the wrong year—can create unintended tax consequences.

Let’s walk through how Roth conversions work, when they make sense, and when they may not be the right strategy.

Is a Roth Conversion a Good Idea?

A Roth conversion may make sense if you expect your future tax rate to be higher, have several years of lower taxable income before Required Minimum Distributions begin, or want more flexibility in managing retirement income. However, a Roth conversion is not right for everyone and should be evaluated based on your tax bracket, retirement timeline, Medicare costs, and long-term financial goals.

• Retirement Timing: A full stop, gradual phaseout, part-time consulting role, or working into your 60s can each affect the retirement timeline, healthcare coverage, and the timing of withdrawals.
• Spending Expectations: Pre-retirees need a realistic view of retirement expenses before they can judge whether savings, benefits, and other resources can support the life they want.
• Housing Plans: Staying put, downsizing, relocating within St. Louis Metro East, moving closer to family, or aging in place can each alter housing costs, home equity use, maintenance, and future care needs.
• Debt Before Retirement: Mortgages, credit lines, personal loans, and other obligations can reduce flexibility once paychecks stop. The 55+ window is often a good time to decide what debt still belongs in the plan.
• Family Responsibilities: Spouse timing, adult children, aging parents, and dependent support can all reshape retirement goals and move the point at which work becomes optional.
• Risk Capacity: The closer you get to retirement, the less time your portfolio may have to recover from a poorly timed downturn. That makes it important to know how much investment risk you can take before withdrawals begin.

Who Should Consider a Roth Conversion?

A Roth conversion may be worth considering if you:

• Recently retired and have a lower taxable income
• Expect future tax rates to rise
• Have a large Traditional IRA balance
• Want to reduce future Required Minimum Distributions
• Have assets outside your IRA to pay conversion taxes
• Want more tax flexibility for retirement income planning
• Want to leave more tax-efficient assets to heirs

This would likely capture featured snippet opportunities.

What is a Roth Conversion?

A Roth conversion is the process of moving money from a pre-tax retirement account into a Roth IRA.

Most commonly, money is converted from:

• Traditional IRA
• Rollover IRA
• SEP IRA
• SIMPLE IRA (after eligibility requirements are met)
• Former employer 401(k) rolled into an IRA

When those dollars are converted, the amount moved is treated as ordinary taxable income during that tax year. 

After taxes are paid, however, those assets continue to grow in the Roth IRA, where future qualified withdrawals are generally tax-free. 

Unlike annual Roth IRA contributions, Roth conversions are not subject to income limits, making them available to many retirees and high-income households.

How Does a Roth Conversion Work?

Although the tax implications can become complicated, the conversion process itself is fairly straightforward.

Here’s a simplified example:

Imagine you have $500,000 in a Traditional IRA.

You decide to convert $50,000 into a Roth IRA this year.

The IRS treats that $50,000 as additional taxable income. 

If you’re in the 22% federal tax bracket, you’ll generally owe federal income tax on the converted amount (plus any applicable state income taxes).

Once the conversion is complete:

• The $50,000 is now in your Roth IRA.
• Future qualified withdrawals can generally be taken tax-free. 
• Those converted dollars will no longer be subject to Required Minimum Distributions during your lifetime.

Many people assume they should convert their entire IRA all at once. In reality, partial conversions spread over multiple years are often the more tax-efficient approach.

Why Consider a Roth Conversion?

People generally pursue Roth conversions for one reason: They believe paying taxes today may save more taxes later.

There are several situations where that can happen.

Perhaps you’re recently retired, and your taxable income has temporarily fallen, or maybe you’re delaying Social Security for several years.

Or perhaps Required Minimum Distributions are expected to push you into higher tax brackets later in retirement.

In each case, voluntarily recognizing income today at a relatively low tax rate may reduce taxes over the remainder of your lifetime.

Potential benefits include:

• Tax-free qualified withdrawals during retirement
• Reduced future Required Minimum Distributions
• Greater flexibility when generating retirement income
• Better control over future taxable income
• Potential estate planning advantages for beneficiaries

Of course, these benefits must always be weighed against the immediate tax cost of making the conversion.

When is a Roth Conversion a Good Idea?

A Roth conversion isn’t about avoiding taxes.

It’s about paying taxes when they’re likely to be lower.

Some of the most common situations where conversions deserve consideration include:

You’re in a Lower Tax Bracket Than You Expect Later

This is probably the strongest reason to convert.

If you expect your income tax rate to increase in future years because of:

• Required Minimum Distributions
• Pension income
• Social Security benefits
• Investment income
• Future tax law changes

then paying taxes today at a lower rate may reduce your overall lifetime tax bill.

You’ve Recently Retired

Many retirees experience several years of unusually low taxable income after leaving work.

Employment income has stopped.

Social Security may not have started.

Required Minimum Distributions are still years away.

Those years often create an excellent planning window for strategic Roth conversions.

Rather than allowing lower tax brackets to go unused, some retirees intentionally convert each year enough to “fill up” a desired tax bracket without spilling into a much higher one.

You Have Cash Available to Pay the Taxes

One of the most overlooked aspects of a Roth conversion is how you pay the tax bill.

Generally speaking, paying conversion taxes with money outside the retirement account is preferable.

Using taxable savings allows more money to remain invested in the Roth IRA, where future earnings may continue to grow tax-free.

Conversely, using IRA assets to pay the taxes reduces the amount converted and, for those under age 59½, may even trigger early withdrawal penalties on the amount withheld for taxes.

You Want More Tax Flexibility During Retirement

Retirement income often comes from multiple sources:

• Traditional IRAs
• Roth IRAs
• Brokerage accounts
• Social Security
• Pensions

Having money in both Traditional and Roth accounts gives retirees more flexibility when deciding where income should come from each year.

For example, during years when taxable income is already high, withdrawals from a Roth IRA generally won’t increase taxable income, potentially helping manage taxes and Medicare premiums.

That flexibility becomes increasingly valuable as retirement progresses.

When a Roth Conversion May Not Make Sense

Just because you can convert doesn’t mean you should.

In some situations, waiting may be the better decision.

Examples include:

• You’re currently in one of your highest-earning years.
• You expect your retirement tax bracket to be substantially lower.
• You don’t have outside funds available to pay the conversion taxes.
• The conversion would push you into a much higher tax bracket.
• It would significantly increase Medicare premiums or create other unintended tax consequences.

The goal isn’t simply to convert money.

The goal is to determine whether converting improves your overall financial picture over your lifetime.

Tax Brackets, Conversion Windows, Medicare, and Social Security

The Best Time to Do a Roth Conversion

One of the biggest misconceptions about Roth conversions is that they’re an all-or-nothing decision.

In reality, the timing of the conversion often matters more than the conversion itself.

Rather than converting your entire IRA in one year, many retirees benefit from making smaller conversions over several years while their taxable income is relatively low.

The goal isn’t necessarily to eliminate future taxes. Instead, it’s to recognize income during years when doing so intentionally may result in a lower overall lifetime tax bill.

Several situations can create favorable Roth conversion opportunities.

The Years Between Retirement and Required Minimum Distributions

For many retirees, one of the best opportunities occurs after employment income stops but before Required Minimum Distributions (RMDs) begin.

Consider this timeline:

Working Years: High salary and potentially higher tax brackets.

Retirement: Employment income ends.

Lower-Income Years: Social Security may be delayed, and RMDs haven’t started.

Required Minimum Distributions Begin: Mandatory withdrawals increase taxable income.

Those years immediately after retirement often provide greater flexibility because your taxable income may be lower than it will be later in retirement.

Rather than allowing lower tax brackets to go unused, some retirees strategically convert each year enough to reach a desired tax bracket.

This approach can reduce future RMDs while spreading the tax bill across multiple years rather than paying it all at once.

During Temporary Low-Income Years

Retirement isn’t the only time Roth conversions deserve consideration.

Other situations can temporarily reduce taxable income, including:

• A career transition
• Early retirement before claiming benefits
• A sabbatical
• Selling a business after a lower-income year
• Temporary unemployment
• A year with unusually large deductions

When taxable income drops, there may be an opportunity to convert retirement assets at a lower tax rate than would otherwise be possible.

During Market Declines

While nobody enjoys watching markets fall, declining markets can sometimes create attractive Roth conversion opportunities.

Imagine your IRA is worth $800,000.

A market correction reduces the balance to $650,000.

If you convert $100,000 during the downturn, you’re paying taxes on assets that have temporarily declined in value.

If those investments later recover inside the Roth IRA, the future appreciation may occur in an account where qualified withdrawals are generally tax-free.

Market declines alone shouldn’t drive the decision, but they can create opportunities when combined with sound tax planning.

Using Tax Brackets Strategically

A common mistake is assuming that Roth conversions should always be as large as possible.

Instead, many financial planners look at your current tax bracket and ask:

“How much could you convert before moving into the next bracket?”

This process is sometimes referred to as “filling up a tax bracket.”

For example:

Scenario 1: Recently Retired Couple

A retired couple has:

• Pension income of $35,000
• Small taxable investment income
• No Social Security yet

Because their taxable income is relatively modest, they may have room to convert additional IRA dollars while remaining within a lower federal tax bracket.

Scenario 2: High-Income Professional

A physician earning $450,000 annually wants to convert a large IRA.

Since employment income already places them in a higher tax bracket, adding another significant amount through a Roth conversion may create a much larger tax bill.

Waiting until retirement may produce a better long-term outcome.

Scenario 3: Early Retiree

A 62-year-old retires and delays Social Security until age 70.

Those eight years may provide several opportunities for annual Roth conversions before Social Security benefits and Required Minimum Distributions increase taxable income.

Each situation is unique, which is why Roth conversions work best as part of an overall tax strategy rather than as a one-time decision.

Roth Conversions and Medicare: Don’t Overlook IRMAA

One area that’s frequently overlooked is how Roth conversions can affect Medicare premiums.

Medicare uses something called the Income-Related Monthly Adjustment Amount (IRMAA) to determine whether higher-income beneficiaries pay additional premiums for Medicare Part B and Part D. 

Here’s where Roth conversions become important.

Because the converted amount is treated as taxable income, it also increases your Modified Adjusted Gross Income (MAGI). 

If your income exceeds certain thresholds, Medicare premiums may increase.

Even a conversion that otherwise makes sense from a long-term tax perspective could temporarily increase healthcare costs if it pushes your income into a higher IRMAA bracket.

Another important consideration is timing.

Medicare generally looks at your income from two years earlier when determining your premiums. 

That means a Roth conversion made today may affect Medicare premiums two years from now.

This doesn’t necessarily mean you should avoid conversions after age 65.

It simply means Medicare premiums should be incorporated into the overall analysis.

Sometimes paying slightly higher Medicare premiums today still produces meaningful lifetime tax savings.

How Roth Conversions Affect Social Security

Social Security creates another layer of complexity.

Many retirees are surprised to learn that Roth conversions can increase the Social Security benefits subject to income tax. 

That’s because the conversion itself increases taxable income during the year it’s completed.

For some retirees, this can mean a larger portion of Social Security benefits becomes taxable.

However, this is also why many financial planners look at Roth conversions before Social Security begins.

Consider a common retirement timeline:

• Age 62: Retire from work.
• Age 62–70: Delay Social Security while living on savings and portfolio withdrawals.
• Age 70: Claim larger Social Security benefits.

Those years before claiming benefits often create one of the most attractive Roth conversion opportunities because taxable income may be considerably lower than it will be later.

Delaying Social Security while strategically converting IRA assets can potentially reduce future RMDs, improve tax diversification, and allow retirees to begin Social Security with a smaller traditional IRA balance.

Of course, this approach isn’t appropriate for everyone.

The right timing depends on income needs, life expectancy, tax brackets, and retirement goals.

A Real-World Planning Mindset

It’s tempting to search for a simple answer to the question:

“Should I do a Roth conversion?”

The better question is:

“How much should I convert this year without creating unnecessary taxes or other unintended consequences?”

Sometimes the answer is $0.

Sometimes it’s $25,000.

Sometimes it’s considerably more.

Rather than aiming for a single large conversion, many retirees find that smaller annual conversions, integrated into a broader retirement income strategy, provide the greatest long-term benefit.

By evaluating tax brackets, Medicare, Social Security, and future Required Minimum Distributions together, you can make more informed decisions that align with your retirement goals.

Roth Conversion vs. Roth Contribution vs. Backdoor Roth: What’s the Difference?

One of the biggest sources of confusion we see is people using the terms “Roth IRA,” “Roth conversion,” and “Backdoor Roth IRA” interchangeably. While they’re all connected to Roth accounts, they’re very different strategies that serve different purposes.

Here’s a simple breakdown.

A direct Roth IRA contribution allows eligible individuals to contribute after-tax dollars directly into a Roth IRA. The money grows tax-free, and qualified withdrawals are tax-free in retirement. However, higher-income households may be phased out of making direct contributions.

That’s where the Backdoor Roth IRA comes in.

A Backdoor Roth involves making a non-deductible contribution to a Traditional IRA before converting those dollars into a Roth IRA. When completed correctly—and assuming you don’t have other pre-tax IRA balances that trigger the pro-rata rule—it can allow higher-income earners to continue building Roth assets each year. 

A Roth conversion is something entirely different.

Rather than moving new contributions into a Roth account, you’re converting money that’s already sitting inside a Traditional IRA or another eligible pre-tax retirement account. Because those dollars have generally never been taxed, the conversion creates taxable income during the year it’s completed.

Many retirees intentionally perform Roth conversions over several years to gradually move assets into tax-free accounts while managing their overall tax liability.

Understanding the differences can help you determine which strategy—or combination of strategies—fits into your overall retirement plan.

Common Roth Conversion Mistakes to Avoid

Roth conversions can create significant long-term tax benefits, but they’re not something to approach casually. A poorly timed conversion can increase taxes, raise Medicare premiums, or eliminate valuable tax credits.

Some of the most common mistakes include:

Converting Too Much in One Year

One of the biggest mistakes is assuming more is always better.

Converting a large IRA balance all at once can push you into a much higher federal tax bracket. Instead of paying tax at 22% or 24%, part of the conversion may be taxed at 32%, 35%, or even higher.

For many retirees, spreading conversions over several years often creates a much better outcome.

Ignoring Medicare Premiums

Once you reach Medicare age, Roth conversions can affect your Medicare Part B and Part D premiums through IRMAA. 

Because IRMAA uses income from two years prior, a large conversion today could increase your Medicare premiums in the future.

This doesn’t necessarily mean you should avoid Roth conversions after age 65. It simply means Medicare costs should be factored into the analysis.

Converting After Social Security Begins Without a Plan

Many retirees begin Social Security and then decide to perform large Roth conversions.

The additional taxable income may cause more of their Social Security benefits to be taxable and increase their overall tax rate.

In many cases, the years before Social Security begins offer considerably more planning flexibility.

Forgetting About State Income Taxes

Federal taxes usually receive most of the attention, but state taxes matter too.

Depending on where you live, a Roth conversion may generate additional state income tax.

On the other hand, some retirees expect to move from a high-tax state into a lower-tax state after retirement. Waiting until after the move could substantially reduce the total tax cost of a conversion.

Paying Conversion Taxes From the IRA

Whenever possible, many financial planners prefer paying the conversion tax from cash held outside the retirement account.

Why?

Every dollar used to pay taxes from the IRA is one less dollar that can continue to grow tax-free in the Roth account.

Using outside cash allows the entire conversion amount to remain invested.

Assuming Roth Conversions Are Always the Right Choice

Roth conversions receive a lot of attention, but they’re not automatically beneficial.

For example, someone who expects to remain in a relatively low tax bracket throughout retirement may benefit very little from paying taxes earlier.

Similarly, retirees planning significant charitable giving may benefit more from keeping pre-tax IRA assets available for Qualified Charitable Distributions (QCDs). 

Every Roth conversion should be evaluated within the broader context of your retirement income plan.

Is a Roth Conversion Right for You?

A Roth conversion can be a valuable planning tool, but it isn’t about simply paying taxes now to avoid taxes later.

The real objective is to reduce your lifetime tax burden while creating greater flexibility throughout retirement.

For some households, that may mean converting a portion of an IRA over several years. Others may benefit from waiting until retirement or choosing not to convert at all.

The best strategy depends on how your retirement income, investment accounts, tax situation, Social Security timing, Medicare costs, and long-term goals fit together.

Rather than viewing Roth conversions as a standalone strategy, consider them as one piece of a comprehensive retirement income plan.

If you’re wondering whether a Roth conversion makes sense for your situation, working through the numbers before making a decision can help you understand the potential trade-offs and long-term impact.

Roth Conversions Examples: How Different Retirement Situations Can Change the Strategy

Every Roth conversion decision is unique. Two retirees with the same IRA balance can end up making completely different decisions based on their income, taxes, retirement timeline, and long-term goals.

Here are a few examples that illustrate why Roth conversions should always be viewed within the context of a broader financial plan.

Example 1: Recently Retired Couple Before Social Security

John and Susan retire at age 62 with most of their savings in Traditional IRAs. They plan to delay Social Security until age 70 and won’t begin Required Minimum Distributions for several years.

Because they’ve stopped working, their taxable income is temporarily much lower than it was during their careers.

Rather than waiting until RMDs increase their taxable income later in retirement, they decide to convert enough from their Traditional IRA each year to stay in a lower federal tax bracket without moving into the next one.

Over several years, they gradually reduce the size of their Traditional IRA while increasing the assets growing tax-free inside their Roth IRA.

Example 2: Early Retirement Creates a Planning Opportunity

Michelle retires at age 58 after selling her business.

She has several years before Medicare begins and plans to delay claiming Social Security.

Those years present an opportunity to evaluate Roth conversions, as her taxable income is lower than it was during her working years.

Instead of making one large conversion, she spreads the process over several years, allowing her to manage taxes while gradually building tax-free retirement assets.

Example 3: Large Required Minimum Distributions

David enters retirement with a substantial Traditional IRA after decades of maximizing retirement contributions.

Without any planning, his future Required Minimum Distributions could push him into a higher tax bracket while increasing the taxable portion of his Social Security benefits.

By converting portions of his IRA before RMDs begin, he reduces the balance subject to future required withdrawals and gains greater flexibility over how he generates retirement income.

Example 4: Roth Conversions May Not Make Sense

Not every retiree benefits from converting retirement assets.

Karen expects to remain in a relatively modest tax bracket throughout retirement and plans to make significant charitable gifts using Qualified Charitable Distributions (QCDs) from her IRA.

Because QCDs can satisfy Required Minimum Distributions while excluding those distributions from taxable income, converting large portions of her IRA could actually reduce one of the strategies available to her.

In her situation, maintaining more pre-tax retirement assets may provide greater long-term flexibility.

Roth Conversion Planning Checklist

Before completing a Roth conversion, it helps to step back and evaluate how it fits into your overall retirement income strategy.

Some of the questions worth asking include:

• Has my taxable income decreased this year compared to previous years?
• Am I currently in a lower tax bracket than I expect to be later in retirement?
• Will this conversion push me into a higher federal or state tax bracket?
• Could the additional income increase future Medicare premiums through IRMAA?
• Have I considered how this conversion may affect the taxation of my Social Security benefits?
• Do I have cash available outside my retirement accounts to pay the taxes?
• Will reducing future Required Minimum Distributions improve my retirement income plan?
• Does this conversion align with my estate planning goals?
• Have I coordinated the conversion with my CPA and financial advisor?

Answering these questions before converting can help you avoid unintended tax consequences and ensure the strategy supports your broader retirement goals.

Common Roth Conversion Myths

Because Roth conversions have become increasingly popular, several misconceptions continue to circulate.

Myth: Everyone should convert their IRA.

Reality: Roth conversions can be beneficial for some retirees, but they aren’t appropriate for everyone. The potential advantages depend on your current tax bracket, expected future income, retirement goals, and overall financial picture.

Myth: You should convert your entire IRA at once.

Reality: Many retirees benefit from spreading conversions over multiple years to manage taxes more efficiently.

Myth: Roth conversions eliminate taxes forever.

Reality: A Roth conversion simply changes when taxes are paid. The converted amount is generally taxable during the year of the conversion, but future qualified withdrawals from the Roth IRA are tax-free.

Myth: Roth conversions are only for wealthy retirees.

Reality: While higher-income households often use Roth conversions, many middle-income retirees also benefit—particularly during years when their taxable income temporarily declines.

Myth: Roth conversions are only about taxes.

Reality: Taxes are important, but Roth conversions can also provide greater flexibility when managing retirement income, Required Minimum Distributions, estate planning, and future cash flow.

Roth Conversion FAQs

1. How often should I do a Roth conversion?

Many retirees revisit the decision annually. Changes in income, tax laws, retirement timing, investment values, and healthcare costs can all affect whether a Roth conversion is beneficial in a given year.

2. Can I convert only part of my IRA?

Yes. Partial Roth conversions are common and often provide greater flexibility than converting an entire account at once. Many retirees convert just enough each year to remain within a target tax bracket.

3. Can Roth conversions reduce future Required Minimum Distributions?

Potentially, yes.

Because Roth IRA balances are generally not subject to Required Minimum Distributions during the owner’s lifetime, converting a portion of a Traditional IRA can reduce the balance that will eventually be subject to RMDs.

4. Should I do a Roth conversion when the market is down?

Some investors choose to convert after market declines because the account value is temporarily lower. If investments later recover inside the Roth IRA, that future growth may occur tax-free.

Of course, investment performance should never be the sole reason for making a Roth conversion.

5. Do I need a financial advisor for a Roth conversion?

Because Roth conversions can affect taxes, Medicare premiums, retirement income planning, estate planning, and long-term cash flow, many investors find it helpful to coordinate the decision with both a financial advisor and a tax professional before moving forward.

6. Are Roth conversions taxable?

Yes. Most Roth conversions involve moving pre-tax retirement dollars into a Roth IRA. The converted amount is generally treated as ordinary taxable income during the year of the conversion.

7. Is there an income limit for Roth conversions?

No.

Unlike direct Roth IRA contributions, Roth conversions are available regardless of income level.

8. Can I do multiple Roth conversions in one year?

Yes.

Many investors complete multiple conversions throughout the year. Some prefer to convert quarterly or near year-end, after they have a better estimate of their taxable income.

9. What accounts can be converted to a Roth IRA?

Eligible accounts may include:

• Traditional IRAs
• Rollover IRAs
• SEP IRAs
• SIMPLE IRAs (after meeting required holding periods)
• Certain employer retirement plans allow for separation from service, or when plan rules allow

The available options depend on your retirement accounts and your employer’s plan provisions.

10. Do Roth IRAs have required minimum distributions?

No.

One of the biggest advantages of Roth IRAs is that the original account owner is not subject to Required Minimum Distributions (RMDs).

This gives retirees greater flexibility when managing retirement income.

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