Roth IRA and 403(b): How They Work Together for Tax-Free Retirement

Roth IRA and 403(b): Two Pieces of a Tax-Free Retirement Strategy

A Roth IRA and a 403(b) plan are not competing accounts — they complement each other. The 403(b) is an employer-sponsored retirement plan available to public-school employees and certain nonprofit workers. A Roth IRA is an individual account where qualified withdrawals are entirely tax-free. Used together, they let you diversify your retirement savings across different tax treatments and give you more control over your income in retirement.

What Is a 403(b) Plan

A 403(b) plan is a retirement account offered by public schools, certain tax-exempt organizations, and some churches. Employees can contribute pre-tax dollars through salary deferrals, and employers may make matching or non-elective contributions. The investments inside a 403(b) typically grow tax-deferred, meaning you pay income tax only when you withdraw the money in retirement. Early withdrawals before age 59½ generally trigger taxes and a 10% penalty, with limited exceptions.

What Is a Roth IRA

A Roth IRA is an individual retirement account funded with after-tax dollars. Contributions are not deductible, but qualified distributions — including earnings — are completely income-tax-free. To qualify, the account must be open for at least five years, and you must be age 59½ or older, disabled, or using the funds for a first home purchase up to a lifetime limit. There are no required minimum distributions during the original owner's lifetime, which makes Roth accounts valuable for estate planning.

Key Differences at a Glance

Can You Have Both a Roth 403(b) and a Roth IRA

Yes. You can contribute to a Roth-designated 403(b) offered by your employer and also fund a Roth IRA in the same year. The contribution limits are separate. The 403(b) limit applies only to your 403(b) contributions, and the IRA limit applies only to your Roth IRA contributions. This allows you to shelter more money on a tax-free basis than either account alone could provide.

Contribution Limits and Rules

The 403(b) contribution limit for 2024 is $23,000, with a $7,500 catch-up contribution for those age 50 and older. Employees with 15 or more years of service may be eligible for an additional $3,000 catch-up, up to a lifetime maximum of $15,000 in extra contributions. For a Roth IRA, the 2024 limit is $7,000, or $8,000 if age 50 or older. Income limits apply to Roth IRA eligibility: single filers with a modified adjusted gross income above $146,000 and married couples filing jointly above $230,000 cannot make direct contributions.

Tax-Free Growth and Withdrawal Rules

Both Roth accounts offer tax-free growth, but the rules for accessing that growth differ. A Roth 403(b) follows the same five-year rule as a Roth IRA, but qualified withdrawals also require the account owner to be age 59½ or older, disabled, or using the funds for a first home. A standard Roth IRA uses the same criteria. Because the 403(b) is employer-sponsored, the plan document may impose additional distribution rules, so it is worth reviewing the summary plan description carefully.

Roth Conversion Strategies

If your employer offers only a traditional 403(b), you can still build tax-free income by converting traditional IRA or 403(b) assets to a Roth IRA. A conversion triggers income tax on the pre-tax amount converted in the year of conversion, but the converted funds then grow tax-free and can be withdrawn tax-free later. This strategy works well in low-income years, such as during a career break or between jobs, when you can convert at a lower tax bracket.

Coordinating Both Accounts for Maximum Benefit

The most effective retirement savers use both accounts intentionally. Fund the 403(b) up to the employer match first, then direct additional savings to the Roth IRA for tax-free flexibility in retirement. If your employer offers a Roth 403(b) option, consider splitting contributions between the Roth 403(b) and the Roth IRA. This broadens your investment choices — 403(b) plans often have a limited menu — and keeps more of your savings outside the reach of required minimum distributions.

Bottom Line

A Roth IRA and a 403(b) plan each address a different part of the retirement puzzle. The 403(b) offers higher contribution limits and possibly employer matching; the Roth IRA offers investment flexibility and no required minimum distributions. Combining both — especially when the 403(b) includes a Roth option — gives you a diversified retirement portfolio with multiple paths to tax-free income.