The 403(b): The Retirement Plan You Might Already Have

C. Brian McKee, RFC®, CKA®

March 05, 2026

McKee Financial Resources, Wealth Management Services

Celebrating Over 40 Years of Excellence Since 1985

RETIREMENT PLANNING

The 403(b): The Retirement Plan You Might Already Have

For Teachers, Hospital Workers, and Nonprofit Employees

She had been teaching fourth grade for eleven years before someone at a district meeting mentioned the phrase “403(b)” and she realized she had been contributing to one the entire time.

It was on her pay stub. It had been deducted every two weeks since her first year. But when someone asked what her investment allocation looked like, she froze. She had signed paperwork during new-hire orientation, picked a contribution percentage, and then — like most of us — moved on with life. The money went somewhere. She just wasn’t sure where.

That moment isn’t unusual. For millions of public school teachers, hospital workers, and nonprofit employees, the 403(b) is the retirement plan they never fully understood but have been using for years. If you work for a school district, a 501(c)(3) nonprofit, a church, or a public hospital, there’s a good chance you have access to one. And if you’ve never really looked at it, you’re not alone.

What Is a 403(b)?

A 403(b) is a tax-advantaged retirement savings plan available to employees of public schools, certain nonprofits, and religious organizations. It works similarly to a 401(k) — money is deducted from your paycheck before taxes, invested in options chosen by you, and allowed to grow tax-deferred until you withdraw it in retirement.

The name comes from Section 403(b) of the Internal Revenue Code, which authorized these plans back in 1958. Originally, 403(b) plans were limited to annuity contracts, which is why you might hear them called “Tax-Sheltered Annuities” or TSAs. Today, most 403(b) plans offer mutual funds alongside annuities, though the investment menu can vary widely depending on the employer.

How It Compares to a 401(k)

If you’ve heard more about 401(k) plans, that’s because they’re more common in the private sector and tend to get more media coverage. But the 403(b) and the 401(k) are more alike than different.

✓ What’s the Same

• Pre-tax contributions reduce your taxable income

• Investments grow tax-deferred

• Withdrawals in retirement are taxed as ordinary income

• Early withdrawals before age 59½ may trigger penalties

• Contribution limits are identical

2026 Contribution Limits

For 2026, the contribution limit is $24,500 for those under 50, with an additional $8,000 catch-up contribution available for those 50 and older (those ages 60–63 may qualify for a higher catch-up under newer rules).

▲ What’s Different

• 403(b) plans are only available to qualifying employers: public schools, 501(c)(3) nonprofits, churches, and some hospitals

• Some 403(b) plans offer a special “15-year rule” catch-up that 401(k) plans don’t have

• Investment options in 403(b) plans are sometimes more limited — often a short list of annuities or mutual funds selected by the employer

• 403(b) plans may have different vesting schedules for employer contributions

The 15-Year Rule — Worth Knowing About

That 15-year rule is worth knowing about. If you’ve worked for the same qualifying employer for at least 15 years and your average annual contributions have been under a certain threshold, you may be eligible to contribute an extra $3,000 per year, up to a lifetime maximum of $15,000. Not all plans offer this, but if yours does and you’re behind on retirement savings, it’s worth a conversation.

The Investment Piece

The 403(b) itself is just the container — what matters is what’s inside.

When you enroll, you typically choose from a list of investment options provided by your employer’s plan. These might include annuities, mutual funds, or target-date funds. Some plans are robust, with low-cost index funds and clear fee disclosures. Others are less transparent.

That fourth-grade teacher? When she finally logged in and looked at her account, she found her contributions had been going into a fixed annuity that paid a modest interest rate. It wasn’t bad. But after eleven years, she wondered if a diversified fund might have been a better fit for her timeline. She hadn’t known to ask.

Questions Worth Asking

• What are the expense ratios on my investment options?

• Am I invested in a way that matches my retirement timeline?

• Does my employer offer a match, and am I contributing enough to get the full amount?

• Have I named a beneficiary, and is that information current?

What About Roth 403(b)?

Some employers now offer a Roth 403(b) option alongside the traditional version. With a Roth, contributions come from after-tax dollars, but qualified withdrawals in retirement are tax-free.

The trade-off is straightforward: pay taxes now or pay taxes later. If you expect to be in a higher tax bracket in retirement — or if you want flexibility in how your withdrawals are taxed — the Roth option might be worth exploring.

Not all 403(b) plans offer a Roth feature. If yours does and you’re unsure which route to take, this is one of those areas where a conversation with a financial professional can help you weigh your options.

One Thing to Consider

The next step is simple: log in and look at where your money is actually going.

The plan has been working quietly in the background. The question is whether it’s working the way you intended.

The 403(b): The Retirement Plan You Might Already Have

What Is a 403(b)?

How It Compares to a 401(k)

The Investment Piece

What About Roth 403(b)?

One Thing to Consider

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