Roth or Traditional? Why the Better Question Is Usually About Flexibility

Educational Topics
Written By Trey Kerns

One of the most common retirement planning questions is:

Should I contribute to Roth or Traditional?

It is a good question, but it is rarely as simple as choosing which option is “better.”

Traditional contributions may provide a tax benefit today. Roth contributions may provide more tax-free flexibility later, assuming certain requirements are met. But the real decision usually involves more than taxes today versus taxes in retirement.

Income, cash flow, time horizon, tax diversification, required minimum distributions, estate goals, and future flexibility can all play a role.

In many cases, the conversation is less about choosing a winner and more about creating optionality for future decisions.

The Basic Difference

A Traditional contribution is generally made with pre-tax dollars. That means it may reduce taxable income today, but withdrawals are generally taxed later when money is distributed.

A Roth contribution is made with after-tax dollars. That means there is no upfront tax deduction, but qualified withdrawals may be tax-free in the future.

At a basic level, the decision often comes down to this:

Traditional: Potential tax benefit today

Roth: Potential tax-free flexibility later

But that is only the starting point.

For 2026, the employee contribution limit for a 401(k) is $24,500, with an additional $8,000 catch-up contribution available for those age 50 or older. For ages 60 through 63, the catch-up contribution can be as high as $11,250, if the plan allows.

IRA contribution limits are much lower. For 2026, the IRA contribution limit is $7,500, with an additional $1,100 catch-up contribution for those age 50 or older.

That difference matters. For higher-income professionals, the Roth 401(k) inside an employer plan may be one of the most efficient ways to build Roth assets because Roth IRAs have income limits, while Roth 401(k) contributions generally do not.

Roth 401(k) withdrawals are generally tax-free only when qualified distribution rules are satisfied, including applicable age and holding-period requirements.

Why Life Stage Matters

I often think about retirement planning in three broad stages:

Accumulation

Protection

Distribution

Each stage creates a different set of priorities. That is why the Roth versus Traditional decision should not be made in isolation.

Stage 1: Accumulation

This is the stage where someone is focused on building wealth.

Example: Young Professional Building Toward Multiple Goals

A younger professional may be earning a solid income, contributing to a 401(k), building cash reserves, and saving for a future home purchase.

At this stage, Roth contributions may be attractive because the individual may be earlier in their income trajectory and has a long time horizon before retirement. The longer the money can grow, the more valuable future tax-free flexibility may become.

But that does not automatically mean Roth is the right answer.

If cash flow is tight, if the individual is trying to save for a home, or if current tax savings would help them increase total savings, Traditional contributions may still play a role.

The key question is not simply:

“Which one has the better tax treatment?”

It is:

How do retirement contributions fit alongside cash flow, future home goals, and long-term accumulation?

Stage 2: Protection

This is the stage where someone has already built meaningful income or assets and is focused on preserving flexibility, managing taxes, and reducing unnecessary concentration.

Example: Mid-Career Professional With Employer Stock

A mid-career professional may have a strong income, a 401(k), employer stock, and possibly an employee stock purchase plan or restricted stock units.

Here, the Roth versus Traditional decision becomes more layered.

If income is high, Traditional contributions may provide a meaningful current-year tax benefit. But if most future retirement assets are being built in pre-tax accounts, the individual may eventually create a tax-heavy retirement structure.

That is where Roth contributions can become valuable—not necessarily because they are always better, but because they create tax diversification.

For 2026, direct Roth IRA contributions begin phasing out at $153,000 of modified adjusted gross income for single filers and are fully phased out at $168,000. For married couples filing jointly, the phase-out range is $242,000 to $252,000.

That means many higher-income professionals may not be able to contribute directly to a Roth IRA. However, they may still have other Roth planning options, including:

  • Roth 401(k) contributions, if offered by their employer plan

  • Backdoor Roth IRA contributions, when appropriate

  • Future Roth conversions, especially during lower-income years

The backdoor Roth IRA strategy generally involves making a nondeductible contribution to a Traditional IRA and then converting those dollars to a Roth IRA. This can be useful for high-income earners, but it requires careful review.

One of the biggest issues is the pro-rata rule. If someone already has pre-tax IRA money, the IRS does not allow them to simply convert only the after-tax dollars. Instead, the conversion generally includes a proportional share of pre-tax and after-tax IRA dollars.

For example, assume someone contributes $7,500 after-tax to a Traditional IRA but also has $92,500 in pre-tax IRA assets. Their total IRA balance is $100,000. In that case, only 7.5% of the conversion may be considered after-tax, and the rest may be taxable.

This is why Roth planning should be coordinated before contributions or conversions are made.

The key question becomes:

Am I building wealth in a way that gives me flexibility later, or am I unintentionally creating a tax problem for my future self?

Stage 3: Distribution

This is the stage where the focus shifts from saving to creating an income stream from assets.

Example: Pre-Retiree or Semi-Retired Business Owner

A business owner or professional nearing retirement may have several moving pieces:

  • Business income

  • Investment accounts

  • Traditional retirement accounts

  • Roth accounts

  • Real estate or other assets

  • Social Security timing

  • Estate planning goals

At this stage, the Roth versus Traditional decision is no longer just about contributions. It becomes part of a broader income and tax strategy.

The key planning question becomes:

Which accounts should be used, and when, to create retirement income efficiently?

For many retirees, there may be a valuable planning window between retirement and the start of required minimum distributions. Required minimum distributions generally begin at age 73 under current rules. During the years after someone retires but before RMDs begin, taxable income may be lower than it was during peak earning years.

That period can create an opportunity to evaluate Traditional-to-Roth conversions.

A Roth conversion moves assets from a pre-tax retirement account, such as a Traditional IRA, into a Roth IRA. The converted amount is generally taxed as ordinary income in the year of conversion. In exchange, future qualified Roth IRA withdrawals may be tax-free, and Roth IRAs do not require lifetime RMDs for the original owner.

Example Conversion Window

Assume a couple retires at age 62 and expects their RMDs to begin at age 73. That gives them roughly an 11-year window to review partial Roth conversions.

If they have $1,000,000 in Traditional IRA assets and convert $50,000 per year for several years, those conversions may increase current taxable income. But the strategy may also reduce future Traditional IRA balances, potentially lowering future RMDs and creating more tax-free flexibility later.

This does not mean they should convert as much as possible every year.

A better approach is often to “fill up” a targeted tax bracket. For example, if a retiree is currently in a lower bracket after leaving work, they may evaluate whether converting enough to stay within a manageable bracket makes sense.

The objective is not avoiding tax entirely. It is deciding whether paying some tax now creates better flexibility later.

Potential Benefits of Roth Conversions

Roth conversions may help:

  • Create future tax-free withdrawal flexibility

  • Reduce future RMD pressure

  • Improve tax diversification

  • Provide more control over taxable income in retirement

  • Create assets that may offer more flexibility for certain estate planning goals

Potential Drawbacks of Roth Conversions

Roth conversions can also create challenges:

  • The converted amount is generally taxable in the year of conversion

  • A large conversion may push someone into a higher tax bracket

  • Higher income may affect Medicare premiums later in retirement

  • Taxes should ideally be paid from outside assets, not from the IRA itself

  • Conversions are generally permanent and cannot be reversed

Timing matters. Converting during a lower-income year can be more attractive than converting during peak earning years. Converting after a market decline may also allow more shares to move into the Roth at a lower value, though this should be evaluated carefully.

Because Roth conversions and backdoor Roth IRA strategies can create tax reporting requirements and unintended tax consequences, they should be reviewed with a qualified tax professional before implementation.

The key question becomes:

How do my accounts work together to support income, taxes, lifestyle, and legacy?

The Real Goal: Tax Diversification

The Roth versus Traditional decision is often framed as a debate.

In reality, many people benefit from having both.

Tax diversification means having different types of accounts that are taxed differently. This can help create flexibility when life changes, tax laws evolve, income needs shift, or retirement begins.

A balanced retirement structure may include:

  • Pre-tax retirement assets

  • Roth retirement assets

  • Taxable investment accounts

  • Cash reserves

That does not mean everyone needs every account type in equal amounts. It simply means the structure should be intentional.

Closing Thought

Roth versus Traditional is an important decision, but it should not be made in a vacuum.

The right answer depends on where you are in life, what you are trying to accomplish, how your income may change, and how your retirement income will eventually be structured.

For some, the current tax benefit of Traditional contributions may be valuable. For others, Roth flexibility may be more important. And for many, the best answer may be a coordinated mix of both.

The goal is not just choosing between taxes now or taxes later.

The goal is building a retirement strategy that creates flexibility, clarity, and better decision-making over time.

Sources

For educational purposes only. This material should not be construed as investment, tax, or legal advice.

Trey Kerns https://KernsLegacyPlanning.com
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