457(b) Calculator: Project Your Deferred Comp Growth
Use this guide to understand the assumptions, inputs, results, and next steps behind the calculator.
Project the future value of your 457(b) deferred compensation plan. This calculator shows how your savings can grow based on your salary, contribution rate, current balance, and expected investment returns. It also models the powerful impact of a 457(b) plan's unique catch-up provisions and its signature benefit: penalty-free withdrawals upon separation from service, regardless of age.
This tool is designed for public sector employees—including state and local government workers, teachers, police officers, and firefighters—as well as employees of certain non-profit organizations who have access to a 457(b) plan. If you also have a 403(b) plan, you can use both calculators to see how they work together. For a complete picture of your financial future, use this tool alongside our main retirement calculator.
The results provide a year-by-year projection of your 457(b) balance, a breakdown of contributions versus investment growth, and a comparison table highlighting the key advantages of a 457(b) over a traditional 401(k). You'll also see a retirement readiness score and actionable insights tailored to your specific situation.
How To Use This Calculator
Start by entering your financial details in the "Income & Contributions" section. Input your gross annual salary, the percentage you contribute to your 457(b) plan, your current account balance, and the average annual investment return you expect. A long-term market average is often estimated around 7%, but you can adjust this based on your personal investment strategy.
Next, go to the "Timeline" section to set your saving window. Enter your current age and the age you plan to retire. The difference between these two numbers determines how many years your contributions and investments have to grow.
For a more detailed projection, open the advanced settings. Here you can add an employer contribution as a percentage of your salary, though this is less common in 457(b) plans than in 401(k) plans. You can also enable catch-up contributions. Enter '1' for "Catch-Up Eligible (Age 50+)" to model the standard catch-up. If your plan allows it, enter '1' for "Special 3-Year Catch-Up" to model the unique provision that allows for significantly higher contributions in the three years leading up to your normal retirement age.
What Each Input Means
Annual Salary & Contribution Rate
Your annual salary and contribution rate are the primary drivers of your new savings each year. The calculator multiplies these two numbers to determine your base contribution, up to the annual IRS limit. A higher contribution rate directly translates to a larger projected balance.
Current Balance
This is the amount of money you already have in your 457(b) account. It serves as the starting point for the projection. A larger initial balance gives compound interest more to work with from day one, often having a significant impact on your final outcome.
Expected Annual Return
This is the average rate of return you anticipate on your investments each year. This percentage is applied to your balance annually to simulate investment growth. While past performance is no guarantee of future results, a common long-term assumption for a diversified portfolio is between 6% and 8%.
Current Age & Retirement Age
Your timeline is a critical factor in retirement savings. Your current age and planned retirement age set the number of years you have to contribute and for your investments to compound. A longer time horizon generally leads to more substantial growth. Planning to retire early means you'll need to save more aggressively over a shorter period.
Employer Contribution
While many 457(b) plans do not offer an employer match, some governmental employers provide a non-elective contribution. Enter this as a percentage of your salary if applicable. Unlike 401(k) and 403(b) plans, employer contributions to a governmental 457(b) plan count toward your annual contribution limit.
Catch-Up Eligible (Age 50+)
If you are age 50 or older, you can contribute an additional amount above the standard limit. For 2026, this catch-up amount is $7,500. This calculator will automatically apply this additional contribution for every year you are 50 or older if you enable this option.
Special 3-Year Catch-Up
This is a unique and powerful feature of 457(b) plans. In the three years prior to your plan's normal retirement age, you may be able to contribute up to double the standard annual limit. For 2026, this could be up to $47,000. This benefit is designed to help those who under-contributed earlier in their careers. You cannot use the Special 3-Year Catch-Up and the Age 50+ Catch-Up in the same year; the one that allows a greater contribution takes precedence.
How The Calculator Works
This calculator uses a year-by-year projection to estimate the growth of your 457(b) account from your current age to your planned retirement age.
For each year in the projection, the calculator first determines your total annual contribution. It calculates your base contribution from your salary and contribution rate. Then, it checks your age to see if you are eligible for catch-up contributions. If you are 50 or older and have enabled the standard catch-up, it adds that amount. If you are within three years of retirement and have enabled the special catch-up, it applies that higher limit instead. The total contribution is capped at the relevant IRS limit for that year.
Next, the calculator adds the total annual contribution to your previous year's balance. It then applies the expected annual return to this new, larger balance to calculate the investment growth for the year. This process repeats for every year until you reach your specified retirement age.
The calculator does not account for investment fees, inflation, or taxes on withdrawals. Withdrawals from a traditional 457(b) are typically taxed as ordinary income. For more on tax planning, see our guide on tax-efficient withdrawal strategies.
Calculator Formula
The projection is built using a year-by-year loop. The core formulas for each year are as follows:
Annual Contribution Formula
The calculator determines your contribution based on your age and catch-up eligibility.
base contribution = min(annual salary * contribution rate, standard limit)
if age >= 50 and using standard catch-up:
yearly contribution = min(annual salary * contribution rate, standard limit + age 50+ catch-up limit)
if age is within 3 years of retirement and using special catch-up:
yearly contribution = min(annual salary * contribution rate, special 3-year catch-up limit)
total annual contribution = yearly contribution + (annual salary * employer contribution rate)
Annual Growth Formula
Each year, the balance grows based on contributions and investment returns.
investment growth = (previous year balance + total annual contribution) * expected annual return
end of year balance = previous year balance + total annual contribution + investment growth
Key Output Formulas
| Result | Formula |
|---|---|
| Projected Balance | final balance at retirement age |
| Total Contributions | sum of all 'total annual contribution' amounts over the years |
| Total Growth | projected balance - current balance - total contributions |
| Penalty Savings | if retirement age < 59.5, then projected balance * 0.10, else 0 |
| Readiness Score | (projected balance * 0.04 / annual salary) * 100 |
What Makes a 457(b) Plan Unique?
A 457(b) plan is a type of non-qualified, tax-advantaged, deferred-compensation retirement plan available for governmental and certain non-governmental employers. While it shares similarities with 401(k) and 403(b) plans, it has three key features that set it apart.
1. No 10% Early Withdrawal Penalty: This is the most significant advantage. Unlike 401(k)s, 403(b)s, and IRAs, withdrawals from a 457(b) are not subject to a 10% early withdrawal penalty if you separate from service, even if you are under age 59½. This makes it an incredibly flexible tool for those planning an early retirement or facing an unexpected job change. Note that regular income tax still applies to withdrawals.
2. Special 3-Year Catch-Up: As mentioned, participants can potentially contribute up to double the standard limit (e.g., $47,000 in 2026) in the three years leading up to the plan's normal retirement age. This powerful provision allows for rapid accumulation of savings late in a career.
3. Separate Contribution Limits from 403(b)/401(k): An employee who has access to both a governmental 457(b) and a 403(b) or 401(k) can contribute the maximum to both plans. This effectively allows eligible public employees to double their tax-deferred savings potential, a benefit not available in the private sector.
457(b) Contribution Limits for 2026
Understanding the contribution limits is key to maximizing your 457(b) plan. For 2026, the limits are:
- Standard Employee Contribution Limit: $23,500. This is the maximum you can contribute from your salary if you are under age 50.
- Age 50+ Catch-Up Contribution: $7,500. If you are age 50 or over, you can contribute an additional $7,500, for a total of $31,000.
- Special 3-Year Catch-Up Limit: Up to $47,000. In the three calendar years prior to your normal retirement age, you can contribute up to twice the standard limit. This special catch-up cannot be used in the same year as the age 50+ catch-up.
These limits apply to the total of employee and employer contributions in a governmental 457(b).
457(b) vs. 403(b) vs. 401(k)
While these plans share the goal of helping you save for retirement, they have important differences.
| Feature | 457(b) (Governmental) | 403(b) | 401(k) |
|---|---|---|---|
| Primary Users | State & local government | Public schools, non-profits | Private sector companies |
| 2026 Limit | $23,500 | $23,500 | $23,500 |
| Age 50+ Catch-Up | $7,500 | $7,500 | $7,500 |
| Special Catch-Up | Yes, up to 2x limit for 3 years | Yes, 15+ years of service rule | No |
| Early Withdrawal Penalty | No, upon separation from service | 10% before 59½ (some exceptions) | 10% before 59½ (some exceptions) |
| Stack with other plans? | Yes, separate limit from 403(b) | Shared limit with 401(k) | Shared limit with 403(b) |
| Employer Match | Less common | Common | Very common |
| Investment Options | Typically limited mutual funds | Often annuity-focused | Wide range, often mutual funds |
For many public employees, the ability to contribute to both a 457(b) and a 403(b) plan offers the best of both worlds.
Understanding Your Results
The calculator provides several outputs to help you assess your plan.
- Retirement Readiness Score: This score gives a quick estimate of how well your projected 457(b) balance could replace your current income in retirement, using the 4% rule. A higher score indicates a stronger projection.
- Projected Balance: This is the estimated value of your 457(b) account at your planned retirement age. It represents the total accumulation of your savings and investment growth.
- Total Contributions vs. Growth Earned: These cards show how much of your final balance comes from the money you put in versus the growth from your investments. For long timelines, growth often outweighs contributions, highlighting the power of compounding.
- Growth Over Time Chart: This visualizes your savings journey, showing how your balance is projected to accelerate over time. The widening gap between the "Total Contributions" line and the "457(b) Balance" line represents your investment earnings at work.
- Early Withdrawal Comparison: This table clearly shows the financial advantage of the 457(b)'s lack of an early withdrawal penalty compared to a 401(k) or 403(b), especially if you plan to retire before age 59½.
Ways To Improve Your Results
If your projection is lower than you'd like, consider these strategies:
- Increase Your Contribution Rate: Even a 1% or 2% increase in your contribution rate can make a substantial difference over several decades.
- Maximize Catch-Up Contributions: If you are over 50 or nearing retirement, make full use of the available catch-up provisions. The Special 3-Year Catch-Up is a particularly powerful tool.
- Contribute to Multiple Accounts: If you are eligible for both a 457(b) and a 403(b), contributing to both can dramatically boost your savings. You might also consider a Roth IRA for tax diversification.
- Review Your Investments: Ensure your asset allocation aligns with your risk tolerance and time horizon. A more aggressive allocation may be appropriate when you are young, while a more conservative one may be suitable closer to retirement.
- Work a Little Longer: Delaying retirement by even a few years gives your investments more time to grow and shortens the period you'll need to draw them down. Use the retirement age calculator to see the impact.
Common Mistakes with 457(b) Plans
- Forgetting to Use the Special Catch-Up: Many participants are unaware of the special 3-year catch-up provision and miss a critical opportunity to supercharge their savings before retirement.
- Not Stacking Contributions: Eligible employees who fail to contribute to both their 457(b) and 403(b)/401(k) leave a significant amount of tax-deferred savings potential on the table.
- Misunderstanding Withdrawal Rules: While there is no 10% penalty, withdrawals are still subject to ordinary income tax. It's crucial to factor this into your retirement budget.
- Assuming a Match: Unlike 401(k)s, an employer match is not a standard feature of 457(b) plans. Don't assume you're getting one without confirming with your benefits administrator.
- Ignoring Plan Fees: Like all retirement plans, 457(b)s have administrative and investment fees. Review your plan's fee disclosure to understand how much of your return is being consumed by costs.
Frequently Asked Questions
Quick answers to the questions people usually have after running the retirement calculator.
1Can I withdraw from my 457b before 59 1/2 without penalty?
Yes. Upon separation from service (i.e., leaving your job), you can withdraw funds from your 457(b) account without incurring the 10% early withdrawal penalty, regardless of your age. You will, however, owe ordinary income tax on the withdrawn amount.
2What is the special 3-year catch-up in a 457b plan?
In the three years before your plan's defined "normal retirement age," you can contribute up to twice the standard annual limit. For 2026, this allows for contributions up to $47,000. It cannot be used in the same year as the regular age 50+ catch-up.
3Can I contribute to a 457b and a 403b at the same time?
Yes. If you work for a governmental employer that offers both plan types, the contribution limits are separate. This means you can contribute the maximum to your 457(b) and the maximum to your 403(b), effectively doubling your tax-deferred savings.
4How much can I contribute to a 457b in 2026?
In 2026, the standard contribution limit is $23,500. If you are age 50 or older, you can contribute an additional $7,500 for a total of $31,000. The special 3-year catch-up may allow contributions up to $47,000.
5Is a 457b better than a 401k?
It depends on your situation. The 457(b) is generally better for early retirees due to the lack of a withdrawal penalty. A 401(k) is often better if it comes with a generous employer match, which is less common in 457(b) plans.
6What happens to my 457b if I leave my job?
You have several options. You can typically leave the money in the plan, roll it over to an IRA or another employer's retirement plan (like a 401(k) or 403(b)), or take a cash distribution (which would be taxable).
7Are 457b withdrawals taxable?
Yes. Withdrawals from a traditional, pre-tax 457(b) plan are taxed as ordinary income at the federal and (usually) state level in the year you receive the money.
8Can I take a loan from my 457b?
Plan loans may be available, but this depends on your specific plan's rules. Check with your plan administrator. Taking a loan should be considered carefully, as it can hinder your long-term growth. A 401(k) loan calculator can help model the impact.
9Should I use a 457b or a Roth IRA?
These accounts serve different purposes. A traditional 457(b) offers a tax deduction now, with taxes paid on withdrawal. A Roth IRA offers no upfront deduction, but qualified withdrawals are tax-free. Many people benefit from using both to achieve tax diversification in retirement.
Start Planning Your Public Service Retirement
Your 457(b) is a powerful tool for building a secure future. Use the calculator above to see where you stand and model how different contribution strategies could change your outcome. Test the impact of using catch-up contributions or increasing your savings rate.
For a broader view of your financial independence, use this tool with the comprehensive retirement savings calculator. Explore our full suite of retirement calculators and our learn section to answer all your financial planning questions.