403(b) Calculator
Estimate your 403(b) retirement savings with employee contributions, employer match, salary growth, annual return, inflation, current balance, Roth vs pre-tax split, 2026 IRS contribution limits, catch-up contributions, annual additions limit, retirement income withdrawals, and tax-impact scenarios.
Calculate Your 403(b)
Result
| Output | Value | Meaning |
|---|
Year-by-Year Projection
| Age | Salary | Employee | Employer | Projected balance |
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Formula Steps
What Is a 403(b) Calculator?
A 403(b) calculator estimates the future value of a 403(b) retirement account using salary, employee contributions, employer contributions, investment return, expenses, inflation, taxes, and retirement age. A 403(b) plan is a retirement plan commonly offered by public schools, certain nonprofit organizations, churches, hospitals, universities, and tax-exempt employers.
The calculator helps answer practical questions: How much could my 403(b) be worth at retirement? How much should I contribute? How much does employer match help? What is the difference between pre-tax and Roth contributions? How do IRS limits affect my savings? How much retirement income might the balance support?
Current 2026 403(b) Contribution Limits
For 2026, the IRS lists the 403(b) elective salary deferral limit as \(24,500\). Employees age 50 or older at year-end can generally make an additional catch-up contribution of \(8,000\), bringing the general age-50+ total to \(32,500\). IRS 2026 retirement-plan limit guidance also lists a higher catch-up amount of \(11,250\) for eligible participants ages 60 through 63 where the plan allows it. The annual additions limit is \(72,000\) for 2026. :contentReference[oaicite:1]{index=1}
| 403(b) limit item | 2025 | 2026 | Meaning |
|---|---|---|---|
| Employee elective deferral | $23,500 | $24,500 | Regular employee salary deferral limit |
| Age 50+ catch-up | $7,500 | $8,000 | Additional catch-up if age 50 or older |
| Age 60–63 higher catch-up | $11,250 | $11,250 | Higher catch-up where plan permits |
| Annual additions limit | $70,000 | $72,000 | Combined employee + employer contributions, with special rules |
Core 403(b) Growth Formula
The calculator compounds contributions year by year. The basic annual recurrence is:
\[ B_{t+1}=B_t(1+r)+C_t \]
Here, \(B_t\) is the account balance at the start of the year, \(r\) is the annual net return after expenses, and \(C_t\) is the total contribution for that year. Total contribution includes employee contribution and employer contribution:
\[ C_t=Employee_t+Employer_t \]
Net return is approximated as:
\[ r_{net}=r_{gross}-expense\ ratio \]
This is a simplified planning assumption. Actual plan returns can vary monthly or daily depending on market performance and investment options.
Employee Contribution Formula
If you enter a salary percentage, the employee contribution before limits is:
\[ EmployeeContribution=Salary\times ContributionRate \]
If a fixed annual contribution is entered, the calculator uses that fixed amount instead of the percentage amount. Then the IRS limit check is applied if enabled:
\[ AllowedEmployeeContribution=\min(DesiredContribution,ApplicableLimit) \]
Employer Match Formula
Employer match rules vary by plan. A common structure is: the employer matches a percentage of your contribution up to a percentage of salary. The calculator estimates employer match as:
\[ EmployerMatch=\min(EmployeeContribution,Salary\times MatchLimit)\times MatchRate \]
For example, if the employer matches \(50\%\) of employee contributions up to \(6\%\) of salary, and salary is \(75,000\), the maximum matched contribution base is \(4,500\). The employer match is \(50\%\times4,500=2,250\).
Pre-tax vs Roth 403(b)
A traditional pre-tax 403(b) contribution may reduce taxable income today, but withdrawals are usually taxable later. A Roth 403(b) contribution is made with after-tax dollars, but qualified withdrawals may be tax-free if requirements are met. The best choice depends on current tax rate, expected retirement tax rate, plan options, time horizon, and personal tax planning.
The calculator lets you enter a Roth share of employee contributions. A \(0\%\) Roth share means all employee contributions are treated as pre-tax. A \(100\%\) Roth share means all employee contributions are treated as Roth. A \(50\%\) Roth share splits the employee contribution.
Catch-up Contributions
Catch-up contributions allow older participants to save more. For 2026, the general age-50+ catch-up is \(8,000\). A higher catch-up amount of \(11,250\) applies for ages 60 through 63 where permitted. Some 403(b) plans can also allow a 15-year service catch-up for employees with long service at the same eligible employer, but it is subject to special rules and plan availability. This calculator includes an educational estimate for the 15-year service catch-up, but your plan administrator should confirm eligibility.
15-Year Service Catch-up
Some 403(b) participants with at least 15 years of service with the same eligible employer may qualify for an additional catch-up contribution. The commonly cited annual amount is up to \(3,000\), subject to a lifetime limit of \(15,000\) and other IRS formulas. Not every employer plan offers this feature. The calculator includes a simplified estimate:
\[ ServiceCatchup=\min(3000,15000-PriorServiceCatchupUsed) \]
Use this only as an educational estimate. Confirm the exact calculation with your employer, plan vendor, payroll office, or tax professional.
Inflation-adjusted Balance
A future retirement balance may look large, but inflation reduces purchasing power. The calculator estimates real balance as:
\[ RealBalance=\frac{FutureBalance}{(1+inflation)^n} \]
Here, \(n\) is the number of years until retirement. This helps you compare the future balance with today’s purchasing power.
Estimated Retirement Income
Many retirement calculators use a withdrawal-rate estimate to translate retirement balance into potential annual income:
\[ EstimatedAnnualIncome=RetirementBalance\times WithdrawalRate \]
If the balance is \(1,000,000\) and the withdrawal rate is \(4\%\), estimated first-year income is:
\[ 1,000,000\times0.04=40,000 \]
This is a planning estimate, not a guarantee. Retirement income sustainability depends on returns, inflation, taxes, longevity, spending, asset allocation, and market sequence risk.
403(b) vs 401(k)
A 403(b) plan is commonly used by public schools and certain tax-exempt organizations. A 401(k) plan is commonly used by private-sector employers. They often share similar elective deferral limits, but plan design, employer match, investment choices, annuity options, administrative costs, and catch-up features can differ.
Common 403(b) Calculator Inputs
| Input | Meaning | Why it matters |
|---|---|---|
| Current age | Your age today | Determines years until retirement and catch-up eligibility |
| Retirement age | Planned retirement age | Controls investment horizon |
| Current balance | Current 403(b) account value | Starting balance for compounding |
| Salary | Annual compensation | Used for percentage contribution and employer match |
| Employee contribution | Your salary deferral | Main savings input |
| Employer match | Employer contribution formula | Can significantly increase retirement savings |
| Return | Expected annual investment return | Drives growth estimate |
| Expense ratio | Investment cost assumption | Reduces net return |
| Inflation | Purchasing power adjustment | Shows future value in today’s dollars |
| Tax rates | Current and retirement tax assumptions | Helps compare pre-tax and Roth scenarios |
Worked Example
Suppose you are age \(35\), plan to retire at \(65\), earn \(75,000\) per year, contribute \(10\%\), receive a \(50\%\) employer match up to \(6\%\) of salary, and expect a \(7\%\) annual return with \(0.5\%\) expenses.
Desired employee contribution:
\[ 75,000\times10\%=7,500 \]
Employer match base:
\[ 75,000\times6\%=4,500 \]
Employer match:
\[ 4,500\times50\%=2,250 \]
Net return assumption:
\[ 7\%-0.5\%=6.5\% \]
The calculator applies these calculations year by year, adjusting salary if salary growth is entered, adding contributions, applying IRS limits if enabled, and compounding the balance.
Common Mistakes
| Mistake | Why it matters | Better approach |
|---|---|---|
| Ignoring employer match | May leave compensation unused | Contribute enough to capture available match if affordable |
| Forgetting IRS limits | Contributions above limits may create tax issues | Use updated annual limits and payroll controls |
| Ignoring fees | Fees reduce long-term compounding | Compare expense ratios and plan options |
| Using one fixed return assumption | Markets fluctuate | Run conservative, moderate, and optimistic scenarios |
| Ignoring inflation | Future dollars may buy less | Review real, inflation-adjusted balance |
| Confusing Roth and pre-tax treatment | Tax timing differs | Compare tax rates now and in retirement |
How to Use This 403(b) Calculator
- Enter your current age, planned retirement age, and current 403(b) balance.
- Enter salary, salary growth, and employee contribution percentage or fixed contribution.
- Enter employer match percentage, match limit, and any fixed employer contribution.
- Enter expected return, inflation, and expense ratio.
- Choose the IRS limit year and whether to apply contribution limits.
- Enable age catch-up or 15-year service catch-up if applicable and plan-permitted.
- Click calculate and review projected balance, real balance, employee contributions, employer contributions, growth, and estimated annual retirement income.
Why This Page Does Not Include Exam Score Tables
A 403(b) calculator is a retirement planning and finance calculator, not an exam score calculator. Score guidelines, score tables, and next exam timetables do not apply directly to this page. The equivalent useful content is current IRS limits, contribution formulas, employer match formulas, catch-up rules, Roth vs pre-tax explanation, inflation adjustment, tax assumptions, and year-by-year projection.
403(b) Calculator FAQs
What is a 403(b) plan?
A 403(b) plan is a retirement plan commonly offered by public schools, certain nonprofits, churches, hospitals, universities, and other tax-exempt employers.
What is the 403(b) employee contribution limit for 2026?
The IRS 2026 elective salary deferral limit for 403(b) plans is $24,500.
What is the 403(b) age 50+ catch-up limit for 2026?
The general age 50+ catch-up limit is $8,000 for 2026.
What is the age 60–63 higher catch-up for 2026?
The higher catch-up amount for eligible ages 60 through 63 is $11,250 in 2026 where the plan permits it.
What is the annual additions limit for 2026?
The 2026 annual additions limit is $72,000, subject to applicable plan and tax rules.
What formula does the calculator use?
The calculator uses \(B_{t+1}=B_t(1+r)+C_t\), where \(B_t\) is balance, \(r\) is net return, and \(C_t\) is total contribution.
Is a Roth 403(b) better than a pre-tax 403(b)?
It depends on current tax rate, expected retirement tax rate, plan features, and personal tax planning. Roth uses after-tax contributions; pre-tax may reduce taxable income today.
Does this calculator guarantee my retirement balance?
No. It uses assumptions. Actual returns, fees, taxes, contribution limits, salary, and plan rules can differ.
Suggested internal links: 401(k) calculator, retirement calculator, Roth IRA calculator, compound interest calculator, investment calculator, salary calculator, inflation calculator, and savings calculator.
