How to Maximize Your 403(b) Contributions

Step 1 — Capture the Full Employer Match First

The employer match is the highest guaranteed return available in any investment — 50–100% return before the market moves. If your employer matches 100% of contributions up to 3% of salary, you earn a 100% return on the first 3% you contribute. No stock, bond, or index fund can compete.

Calculate the minimum contribution to capture the full match:

Minimum contribution % = employer match cap (% of salary)

If your employer matches up to 3%, contribute at least 3%. Anything less is leaving compensation on the table.

Step 2 — Choose Traditional or Roth

Both grow identically inside the account. The difference is when you pay taxes:

• Traditional: Pre-tax contributions → taxable withdrawals in retirement. Best if your tax rate is higher today than it will be in retirement.
• Roth: After-tax contributions → tax-free withdrawals in retirement. Best if your tax rate is lower today than it will be in retirement.

Use the calculator’s Traditional vs. Roth comparison to see the after-tax difference based on your expected retirement tax rate.

If you’re early in your career at a lower income — Roth is often advantageous. If you’re in your peak earning years — Traditional typically saves more tax.

Step 3 — Increase Contributions to the Maximum Limit

After capturing the match, increase contributions toward the annual limit ($24,500 for 2026). The most practical approach:

1. Increase by 1% of salary each year at annual review
2. Direct any raise amount to your 403(b) (you never had that extra money, so you won’t miss it)
3. Automate — most 403(b) plans allow automatic escalation

Step 4 — Apply Catch-Up Contributions if Eligible

If you’re 50 or older, you can contribute an additional $8,000 in 2026 ($32,500 total). If you’re 60–63, the SECURE 2.0 super catch-up allows $11,250 extra ($35,750 total).

These catch-up years are particularly powerful because you’re closer to retirement — the money has less time to grow, so every extra dollar matters more.

Step 5 — Check and Reduce Investment Fees

403(b) plans offered by schools and nonprofits often include annuity products with expense ratios of 1–2% per year. Over 30 years, a 1% fee difference on a $500,000 balance costs roughly $150,000 in lost growth.

Check your plan’s investment options:

1. Log into your plan portal and find each fund’s expense ratio
2. Choose the lowest-cost option in each asset class
3. Look for index funds with expense ratios under 0.20%
4. If only annuities are available, contact your HR department — employers can add mutual fund options

Step 6 — Review the 15-Year Service Catch-Up

If you’ve worked for the same nonprofit or school for 15+ years and haven’t maximized contributions in prior years, you may qualify for a special $3,000/year additional catch-up (up to $15,000 lifetime). Check your plan document or ask HR if your plan includes this provision.

Common Mistakes to Avoid

• Only contributing to get the match — the match is the floor, not the ceiling
• Ignoring Roth option — if your employer offers Roth 403(b), evaluate it annually
• Staying in the default fund — many 403(b) plans default to expensive annuities; opt into lower-cost funds if available
• Missing the catch-up window — catch-up contributions in your 60–63 window are the highest-limit years in your career; maximize them
• Withdrawing early — early withdrawals before 59½ trigger income tax plus a 10% penalty on the withdrawal amount