Roth Conversion Strategies for Retirees | Columbus, Ohio

How Do Roth Conversions Fit Into Your Retirement Income Plan?

Quick answer: A Roth conversion moves money from a traditional IRA or 401(k) to a Roth IRA, paying income tax on the converted amount now in exchange for tax-free growth and withdrawals later. For Columbus, Ohio retirees, Roth conversions are best understood not as a single decision but as a multi-decade strategy that reshapes the retirement income picture. Strategic conversions during lower-income years can reduce future Required Minimum Distributions, create flexibility for managing income across years, provide tax-free assets for late retirement and inheritance, and help manage sequence of returns risk. The decision is largely irreversible, and conversions are inappropriate in many situations. The right approach depends on each household's specific income picture, tax position, time horizon, and goals. This article is educational; specific Roth conversion advice requires a qualified tax professional working alongside a financial advisor.

Key Takeaways

• Roth conversions are most powerful when viewed as part of a multi-decade income strategy, not as a single decision.
• The strategic windows for conversions are typically the lower-income years — between retirement and Social Security claiming, and between Social Security and Required Minimum Distributions.
• Conversions reduce future RMD-eligible balances, which can reshape the income picture later in retirement.
• Roth withdrawals provide flexibility for managing income across years — useful for sequence risk management.
• Conversions are largely irreversible under current tax law and inappropriate in many situations.
• Multi-year planning generally produces better outcomes than concentrating conversions in single years.
• For Columbus-area retirees, conversion decisions should be coordinated between a financial advisor and qualified tax professional.

Table of Contents

• Why Roth Conversions Matter for Retirement Income
• The Multi-Decade View
• The Strategic Conversion Windows
• How Conversions Reshape RMDs
• Conversions and Social Security Claiming
• Conversions and Sequence of Returns Risk
• The Roth IRA Inheritance Picture
• When Conversions May Not Make Sense
• Building a Multi-Year Conversion Plan
• Frequently Asked Questions

Why Roth Conversions Matter for Retirement Income

For Columbus-area retirees with significant traditional IRA, 401(k), 403(b), or 457 balances, Roth conversions are one of the more consequential ongoing decisions in retirement income planning.

The reason: traditional retirement accounts work differently than Roth accounts during the withdrawal phase. Traditional account withdrawals count as taxable income. They affect tax bracket positioning, Medicare premiums, and the federally taxable portion of Social Security. Required Minimum Distributions force withdrawals starting at a specific age regardless of whether you need the income.

Roth accounts work differently. Qualified withdrawals are tax-free at the federal level and don't appear in income calculations that affect Medicare or Social Security taxation. Roth IRAs don't trigger Required Minimum Distributions during the original account holder's lifetime. The flexibility is significant.

The strategic implication: A retiree who holds only traditional retirement accounts has a fixed income picture — partially dictated by RMDs once they begin. A retiree with both traditional and Roth balances has more flexibility — they can choose which account to draw from in any given year based on what serves the overall plan best.

Roth conversions are how a retiree builds that flexibility. By converting strategically during the right years, a retiree can shape what their income picture looks like five, ten, or twenty years into retirement.

For Columbus retirees, the conversion question isn't just "should I convert?" It's "how do conversions over the next several years reshape my income picture across the rest of retirement?"

This article is part of my broader guide on how to plan retirement income in Columbus, Ohio, which covers how conversion strategy fits with the rest of the retirement income plan.

The Multi-Decade View

Most retirees naturally think about Roth conversions one year at a time: "Should I convert this year? How much?" That single-year framing misses the larger opportunity.

A more useful framing: Roth conversions are a multi-decade strategy that reshapes when and how retirement income flows.

The typical retirement income arc:

• Ages 60-65 (or whenever retirement begins): Often lower-income years. Earned income has stopped. Social Security hasn't started. RMDs haven't begun. Taxable income may be primarily from voluntary IRA withdrawals or interest/dividends.
• Ages 65-70: Medicare begins at 65. Social Security may or may not have started. Taxable income picture depends on claiming decisions.
• Ages 70+: Social Security usually started by now (or at 70 at the latest). RMDs eventually begin at the age specified in current tax law.
• Late retirement (mid-70s onward): Income picture is largely set — Social Security plus RMDs plus any other fixed sources. Flexibility narrows.

Where conversions can add value across this arc:

Strategic conversions during the lower-income years can:

• Reduce traditional balances now (when they're taxed at lower brackets) to reduce future RMDs (when those RMDs might be taxed at higher brackets)
• Build Roth balances that can be drawn from in higher-income years when staying below tax thresholds matters
• Create tax-free assets that pass to heirs more favorably than traditional accounts
• Provide flexibility for managing income during difficult market years (sequence risk management)

The multi-decade view is what separates strategic conversion planning from one-time tax optimization. A retiree who converts $30,000-$50,000 per year for five-to-ten years can meaningfully reshape their late-retirement income picture in ways that a single large conversion in one year often can't match.

The Strategic Conversion Windows

Two specific windows tend to be most valuable for Roth conversions in a retirement income plan.

Window 1: The pre-Social Security gap (typically ages 60-67)

For many retirees, the years between retirement and Social Security claiming are the lowest-income years of retirement. Earned income has stopped. Social Security hasn't begun. RMDs are still years away.

This window often has the most room for strategic conversions because:

• Total taxable income may be low enough to leave several lower tax brackets unused
• No Social Security taxation interaction yet (since you haven't claimed)
• No Medicare IRMAA interaction yet if you're pre-65 (or limited interaction if you're 65-67)
• Conversions can fill lower tax brackets without spilling into higher ones

For Columbus retirees who retire before claiming Social Security, this 5-7 year window is often the prime conversion period.

Window 2: The post-Social-Security, pre-RMD window (typically ages 67-73)

Once Social Security has started but before RMDs begin, there's often another conversion window. The math is more complex because Social Security taxation now matters and Medicare IRMAA may apply, but conversions can still add value if:

• Total income is moderate enough that conversions don't push into significantly higher brackets
• The conversion amount can be sized to stay below IRMAA thresholds
• The retiree has time horizon for the conversion math to work

Other potentially valuable windows:

• Bear market years: Converting when investment values are temporarily depressed effectively converts at a "discount" — the eventual recovery happens in the Roth, tax-free
• Years with offsetting deductions or losses: Charitable bunching years, business loss years, large medical expense years can create unused deduction capacity that conversions can fill
• Year before Social Security claiming: A final pre-Social-Security conversion can be timed to capture the last low-income year

Less attractive windows:

• Working years when ordinary income is already high
• Years with concentrated other income (Roth conversions on top of severance, large bonuses, large capital gains)
• Years after RMDs begin (RMDs themselves cannot be converted, and the existing RMD income reduces the bracket room for additional conversions)
• Years with health crises or other major life events where time horizon is uncertain

For Columbus retirees, identifying the conversion windows in your specific situation is one of the higher-value uses of coordinated financial and tax planning.

How Conversions Reshape RMDs

One of the more powerful long-term effects of Roth conversions is what they do to Required Minimum Distributions.

The basic mechanic:

RMDs are calculated based on traditional retirement account balances at the end of the previous year, divided by an IRS life expectancy factor. The bigger the traditional balance, the bigger the RMD.

Every dollar converted from traditional to Roth reduces future RMD-eligible balances by that dollar. Plus all the future growth on that dollar — which would have grown the RMD base — now grows in the Roth tax-free instead.

A practical illustration (using illustrative numbers, not specific recommendations):

A retiree at age 62 has $1.5 million in a traditional IRA. Without any conversions, that balance might grow to $2.2 million by RMD age, producing RMDs in the range of $80,000-$100,000 per year initially — which then continue to grow.

The same retiree converting $40,000-$60,000 per year for the seven years between 62 and 69 (a hypothetical strategic conversion plan) might reduce the traditional balance by $300,000-$420,000 of converted dollars, plus the growth on those dollars. The RMD-eligible balance at RMD age might be closer to $1.5-$1.8 million instead of $2.2 million. RMDs would be proportionally smaller.

Why this matters for the income picture:

• Smaller RMDs mean less mandatory taxable income in late retirement
• Less mandatory taxable income means more room for managing tax brackets
• More room for managing tax brackets means more flexibility for IRMAA management, Social Security taxation control, and capital gains realization
• The Roth balance built through conversions provides additional flexibility on top

For retirees with large traditional balances, the cumulative RMD reduction over 20-30 years can be substantial. The conversion tax paid now is meaningful, but the eventual tax savings on smaller RMDs plus the tax-free Roth growth often more than offset the upfront cost.

Important caveats:

• The math depends on individual tax bracket comparisons (conversion year vs. eventual RMD year)
• Inflation and tax law changes can affect the long-term outcome
• For retirees whose RMDs would already be manageable, the benefit is smaller
• For retirees who plan to spend down their traditional balances voluntarily (rather than letting RMDs do it), the math changes

Conversions and Social Security Claiming

Roth conversion strategy interacts with Social Security claiming decisions in ways that affect the overall retirement income plan.

Why the interaction matters:

Social Security claiming affects which years have higher vs. lower taxable income — which in turn affects when Roth conversions are most efficient. Delayed Social Security claiming creates more low-income years, which can support more aggressive conversions. Early Social Security claiming compresses the conversion window.

The pattern that often emerges:

For retirees who delay Social Security claiming (often the higher earner in a married couple), the pre-Social-Security gap is extended. This creates more years of low-income tax environment for strategic conversions. The math often supports converting more during the extended gap.

For retirees who claim Social Security early, the gap is shorter or non-existent. Less room for low-income conversions. The conversion strategy needs to fit the available windows.

The coordination opportunity:

The two decisions — Roth conversion strategy and Social Security claiming — work best when planned together. A retiree planning to delay Social Security to age 70 has different conversion math than one planning to claim at FRA. We cover Social Security claiming in detail in mypiece on Social Security claiming strategies for Columbus retirees.

A specific scenario where conversions help even more:

For a married couple where one spouse expects to outlive the other significantly, the strategic question includes: what does the survivor's tax picture look like? Single-filer brackets are tighter than joint brackets. The survivor will face higher marginal rates on the same income.

Conversions during both spouses' lifetimes can reduce the traditional balances that will eventually face survivor-only tax rates. This survivor-focused conversion logic can shift the analysis meaningfully for couples with longevity gaps.

Conversions and Sequence of Returns Risk

One of the less-discussed benefits of strategic Roth conversions is their interaction with sequence of returns risk.

The link:

Sequence of returns risk is highest in the first 5-10 years of retirement, when portfolio withdrawals during a downturn can permanently damage the retirement plan. The standard mitigation strategy is maintaining a cash or short-term reserve to fund spending during market downturns without selling stocks at low prices.

Roth balances can serve a similar function — but with tax efficiency that cash and short-term bonds don't provide.

How it works:

During a market downturn in early retirement, drawing from Roth accounts (rather than tax-deferred accounts) keeps taxable income low, supports tax bracket management, and provides spending without triggering further portfolio damage to long-term assets.

A retiree who built Roth balances through pre-retirement and early-retirement conversions effectively has a tax-efficient "buffer" for difficult years. We cover sequence of returns risk in our forthcoming piece on sequence of returns risk (coming soon in this series).

The strategic implication:

The "build Roth balances during low-income years" logic isn't just about future RMD management — it's about creating flexibility for the unknown. Whether that flexibility ends up being used for sequence risk management, IRMAA control, Social Security taxation, or estate planning, the optionality has value.

The Roth IRA Inheritance Picture

For retirees with estate planning goals — leaving assets to spouse, children, or other heirs — the inheritance treatment of Roth accounts is one factor in the conversion analysis.

How Roth IRA inheritance generally works:

Under current rules:

• Roth IRAs inherited by a surviving spouse can generally be treated as the spouse's own Roth IRA, with no RMD requirements during their lifetime
• Roth IRAs inherited by non-spouse beneficiaries are generally subject to a 10-year distribution rule under the SECURE Act
• Roth distributions to non-spouse beneficiaries are generally tax-free (since the original holder paid tax)
• The 10-year rule for non-spouses means the inherited Roth must be distributed within 10 years of the original owner's death

The contrast with traditional account inheritance:

Traditional accounts inherited by non-spouses are also subject to the 10-year rule under SECURE — but with very different tax consequences. Heirs pay ordinary income tax on traditional account distributions. For heirs in higher tax brackets than the retiree, this can be substantial.

The implication for conversion strategy:

For retirees with heirs in higher tax brackets, conversions during life effectively prepay tax at the retiree's lower rate rather than letting heirs pay at higher rates. The retiree pays less tax than the heirs would have, and the heirs receive tax-free Roth assets instead of tax-burdened traditional distributions.

For retirees with heirs in lower brackets, or with no heirs, this estate angle adds less value to the conversion analysis.

Important caveats:

• Tax law changes can affect inheritance rules
• Family circumstances change — current assumptions about heirs' tax brackets may shift
• The Roth account passes through estate planning structures the same way other assets do
• Estate planning advice from a qualified attorney should accompany conversion strategy when meaningful estate considerations are involved

When Conversions May Not Make Sense

Several patterns suggest Roth conversions may be inappropriate for a specific retiree's situation.

Higher current tax bracket than expected future bracket. If conversion years would be taxed at higher rates than future RMD years, the conversion produces a net tax cost rather than savings. Retirees who expect to drop into lower brackets in retirement may be better served by waiting and drawing down at the lower rates.

Conversion tax must come from the IRA itself. When the conversion tax has to be paid out of the converted amount, the conversion math weakens significantly. The dollars used to pay tax don't end up in the Roth. The conversion produces less ultimate Roth balance, which means less ultimate tax-free growth.

Time horizon too short. Roth conversions need time for the tax-free growth to recover the upfront tax cost. A retiree in their late 80s converting a large amount may not have the runway for the conversion math to work, even if other factors favor it.

No appreciable difference in future vs. current tax brackets. If brackets are roughly the same now as they're expected to be later, the conversion produces little tax benefit. The upfront tax cost is real, but the future tax savings are minimal.

Concentrated single-year approach. A large one-year conversion that spills into much higher tax brackets — particularly triggering Medicare IRMAA tier jumps — can erase the conversion benefit. Multi-year planning is almost always preferable.

Insufficient liquidity for the tax. Conversions are most efficient when the tax can be paid from outside funds (taxable accounts, current income). Retirees without that liquidity may not be in a position to convert efficiently.

Significant uncertainty about future tax law. While current law preserves favorable Roth treatment, future legislative changes could affect the conversion math. Conservative conversion strategies that don't depend on aggressive long-term tax savings are more robust to legislative change.

Strong estate planning preferences for traditional accounts. Some retirees specifically want to leave traditional accounts (with their tax burden) to heirs they're confident will receive them in low-tax circumstances. The conversion changes that estate structure.

For Columbus retirees, the "should I convert?" question often becomes "should I convert this year, in this amount?" — and the right answer depends on the year-specific tax picture and the broader plan.

Building a Multi-Year Conversion Plan

The pattern that produces better Roth conversion outcomes is typically multi-year planning rather than single-year decisions.

The framework:

1. Project the multi-decade income picture. Map expected income across the rest of retirement — earned income, Social Security, pension, RMDs, taxable account drawdowns. This shows where the income peaks and valleys are.
2. Identify the strategic conversion windows. The low-income years between retirement and Social Security, and between Social Security and RMDs, often are the prime conversion windows.
3. Size conversions to fit the bracket structure. Within each potential conversion year, calculate how much can be converted to "fill" a lower bracket without spilling into a higher one. The conversion amount should fit the available bracket room.
4. Account for IRMAA effects. For retirees on Medicare or approaching enrollment, conversion amounts should be sized to stay below relevant IRMAA tier thresholds — or strategically across thresholds where the math supports it.
5. Coordinate with Social Security taxation. Conversions during years with Social Security claimed can push more Social Security into the federally taxable category. Multi-year conversion plans should account for this interaction.
6. Build flexibility for changing circumstances. Tax law, market conditions, health, and family circumstances change. A multi-year conversion plan should be reviewed and adjusted annually, not set in stone.
7. Work with qualified professionals. Roth conversion math involves federal taxes, Ohio taxes, IRMAA, Social Security taxation, and estate planning. A financial advisor and tax professional working together produce better outcomes than any single individual handling all the pieces.

A common pattern for Columbus retirees with significant traditional balances:

A retiree retires at 63 with $1.2 million in traditional IRA and 401(k) assets, $400,000 in taxable accounts. Plans to claim Social Security at 70. RMD age is 75.

• Years 63-69 (pre-Social Security): Strategic conversions of $40,000-60,000 per year, sized to fill the lower tax bracket without spilling into higher brackets. Conversion tax paid from taxable accounts to maximize efficiency.
• Years 70-74 (Social Security started, no RMDs): Smaller conversions, sized to manage Social Security taxation and IRMAA tier positioning.
• Years 75+ (RMDs): Conversions generally stop as RMDs fill the bracket space.

This kind of multi-year sequencing typically produces meaningfully better outcomes than waiting until conversions become "obvious" or making single-year decisions in isolation.

Frequently Asked Questions

What is a Roth conversion? A Roth conversion is the process of moving money from a traditional retirement account (such as a traditional IRA, 401(k), 403(b), or 457) into a Roth IRA. The converted amount is taxed as ordinary income in the year of conversion. In exchange, the assets grow tax-free in the Roth IRA, and qualified withdrawals are tax-free.

When does a Roth conversion make sense? Conversions tend to be most valuable in lower-income years — typically the gap between retirement and Social Security claiming, or between Social Security claiming and the start of Required Minimum Distributions. Conversions also become more attractive when leaving Roth assets to heirs is part of the estate plan, or when current tax brackets are meaningfully lower than expected future brackets.

When does a Roth conversion not make sense? Conversions may not be appropriate when current tax brackets are higher than expected future brackets, when the conversion tax must be paid from the IRA itself, when the time horizon is too short to recover the upfront tax cost, when the conversion would trigger a substantial Medicare IRMAA tier increase, or when current liquidity is insufficient to pay the tax efficiently.

How do Roth conversions affect Required Minimum Distributions? Roth conversions reduce traditional account balances, which directly reduces future RMD calculations. Each dollar converted reduces both the RMD base and the future growth that would have compounded in the traditional account. For retirees with large traditional balances, multi-year conversion strategies can meaningfully reduce eventual RMDs.

Can I undo a Roth conversion? Generally no. Under current tax law, Roth conversions cannot be reversed. The "recharacterization" provision that previously allowed reversal was eliminated. This is one reason conversion decisions deserve careful analysis.

How much should I convert in a year? The right conversion amount depends on your specific tax bracket, IRMAA tier proximity, Social Security situation, and liquidity for paying the conversion tax. There is no universal right answer. Most retirees benefit from multi-year planning that sizes annual conversions to fit within bracket structures and below IRMAA thresholds.

Should I do a large single conversion or spread it out? Multi-year planning generally produces better outcomes than concentrated single-year conversions. Spreading conversions across years reduces the risk of bracket jumps, IRMAA tier increases, and Social Security taxation effects. The math is also more resilient to year-specific surprises.

How does a Roth conversion affect Social Security? Conversion amounts count as income for the year, which can push more of Social Security benefits into the federally taxable category (up to the 85% maximum). Conversions before claiming Social Security avoid this interaction entirely. Once Social Security is being received, conversion planning needs to account for the stacking effect.

Should I work with a tax professional on Roth conversion strategy? Yes. Roth conversion analysis involves federal taxes, Ohio taxes, Medicare IRMAA, Social Security taxation, and estate planning interactions. Most retirees benefit from coordinated analysis between a financial advisor and qualified tax professional, particularly for multi-year conversion strategies or larger conversion amounts.

Can I convert from a 401(k) directly? Some 401(k) plans allow direct conversions to Roth IRAs while still employed (an "in-plan Roth conversion") or while separated from service. Other plans require rollover to a traditional IRA first, then conversion. The rules vary by plan — check with your plan administrator.

Build a Plan, Not a One-Time Decision

For Columbus-area retirees and pre-retirees with significant traditional retirement accounts, Roth conversion strategy can be one of the more impactful ongoing decisions in retirement income planning — but only when approached as a multi-year strategy rather than a single decision.

The pattern that produces better outcomes: identify the strategic conversion windows in your specific situation, size annual conversions to fit within tax brackets and below IRMAA thresholds, coordinate with Social Security claiming and other planning decisions, review and adjust annually, and work with a financial advisor and qualified tax professional throughout.

For the bigger picture of how Roth conversions fit into broader retirement income planning, see my pillar guide on how to plan retirement income in Columbus, Ohio. For context on how Social Security claiming affects conversion timing, see my piece on Social Security claiming strategies for Columbus retirees. For context on how income needs shape the conversion picture, see my piece on how much income you need in retirement.

At Blue Advisors, we work with Columbus-area retirees and pre-retirees to develop multi-year Roth conversion strategies as part of comprehensive retirement income planning. We're a fee-only fiduciary registered investment advisory firm based in Columbus, Ohio. We work in partnership with our clients' tax professionals — not in place of them.

Schedule a conversation: If you're a Columbus-area retiree or pre-retiree thinking through Roth conversion strategy, you can book an introductory call here: calendly.com/jimblue/blue-advisors-meeting.

By James Blue, Fee-Only Advisor | Blue Advisors

James Blue is the founder of Blue Advisors, a fee-only registered investment advisory firm based in Columbus, Ohio, serving retirees, pre-retirees, and busy professionals across Central Ohio and nationally.

This content is provided for informational and educational purposes only and should not be construed as personalized investment, tax, or legal advice. Roth conversion decisions are highly individual and largely irreversible under current tax law. Tax laws, contribution and conversion rules, RMD requirements, Medicare IRMAA thresholds, and Social Security taxation rules change periodically. Specific conversion strategies depend on each household's full tax picture and time horizon. The views expressed are those of the author as of the date published and are subject to change without notice. Blue Advisors is a fee-only registered investment advisory firm and is not a tax preparation firm or law firm. Readers should consult a qualified tax professional, the IRS, the Ohio Department of Taxation, the Social Security Administration, and where applicable an attorney before making Roth conversion decisions. Advisory services are offered only pursuant to a written advisory agreement and to clients in the State of Ohio, the Commonwealth of Pennsylvania, and other jurisdictions where Blue Advisors is properly registered or exempt from registration. Past performance is not indicative of future results.