KalkWise
Retirement

403(b) Calculator

Project your 403(b) balance at retirement and see exactly how much your employer match is worth — built for teachers, healthcare workers, and non-profit employees.

Updated June 2026 · Editorial standards

Your 403(b) plan

$
$
$
%
%
%
Projected balance
$951,660
Monthly retirement income· 4% rule
$3,172
Your contributions
$240,000
Employer match total
$39,000

Your employer match is worth $1,300/year — equivalent to a 2.0% raise on your $65,000 salary.At retirement your projected $951,660 generates $3,172/month at a 4% withdrawal rate.

403(b) balance growth to retirement

At retirement — breakdown

Savings rate

LowExcellent
Excellent12.3% of salary

You're saving $8,000/year. Below 10% is low; 15–20% is good; 20%+ is excellent for long-term wealth building.

Year-by-year 403(b) growth

AgeBalanceYou contributedEmployer match
Age 36$41,658$8,000$1,300
Age 37$54,015$16,000$2,600
Age 38$67,114$24,000$3,900
Age 39$80,999$32,000$5,200
Age 40$95,717$40,000$6,500
Age 41$111,318$48,000$7,800
Age 42$127,855$56,000$9,100
Age 43$145,385$64,000$10,400
Age 44$163,966$72,000$11,700
Age 45$183,662$80,000$13,000
By the KalkWise Editorial Team Reviewed for accuracy Updated June 2026

What is the 403(b) calculator?

In short

A 403(b) is a tax-deferred retirement plan for non-profit, school, and government employees. The 2024 contribution limit is $23,000 ($30,500 if 50+). Contributing $8,000/year from age 35 at 6% return yields approximately $635,000 at age 65 — generating $2,117/month at a 4% withdrawal rate.

Projects your 403(b) balance at retirement, shows the full value of any employer match, estimates monthly retirement income using the 4% rule, and tracks year-by-year growth in a detailed table and chart.

How to use this calculator

  1. 1Enter your current age and target retirement age.
  2. 2Enter your current 403(b) balance and planned annual contribution.
  3. 3Enter your annual salary and employer match terms (match % and salary cap).
  4. 4Adjust the expected annual return (5–7% is realistic for a diversified 403(b)).

The formula

B=(B+C+match)×(1+r)n
monthly income=B×4%12
Each year: balance = (balance + contribution + match) × (1 + r). Repeat for n years. Monthly income = final balance × 4% ÷ 12.
B
— Account balance
C
— Annual contribution
M
— Annual employer match
r
— Annual return rate
n
— Years to retirement

Worked example

The scenario

Teacher, age 35, $30,000 balance, $8,000/year contribution, $65,000 salary, 50% match up to 4% of salary, 6% return, retires at 65.

gives

The result

Annual match: $1,300 (50% of $2,600). 30-year projection: ~$635,000. Monthly retirement income at 4% rule: ~$2,117.

Common use cases

  • Teachers and school district employees planning retirement alongside a pension.
  • Hospital and non-profit workers comparing 403(b) vs. 457(b) contributions.
  • University staff deciding how much to contribute to maximize the employer match.
  • Government employees with both a 403(b) and a defined-benefit pension.

Limitations & assumptions

  • Many public-sector 403(b) plans offer limited investment menus dominated by variable annuities with high fees (1–2%+ expense ratios) — input your actual fund expense ratio to see real drag.
  • Pensions reduce how much 403(b) income you need — factor in expected pension before setting your target.
  • The 15-year catch-up rule (extra $3,000/year up to $15,000 lifetime for 15+ year employees) is not modeled.
  • Roth 403(b) contributions grow tax-free; traditional 403(b) growth is tax-deferred — tax treatment affects real-dollar outcomes.

Frequently asked questions

The base limit is $23,000 (same as 401k). Workers aged 50+ can add a $7,500 catch-up contribution for a total of $30,500. Employees with 15+ years at the same eligible organization may contribute an additional $3,000/year via the 15-year rule, up to a $15,000 lifetime maximum.

Disclaimer: KalkWise calculators are provided for general informational and educational purposes only and do not constitute financial, investment, tax, or legal advice. Results are estimates based on the figures you enter and the assumptions described above. Actual outcomes will vary. Consult a qualified professional before making financial decisions.