457(b) Retirement Calculator

A 457(b) plan is a tax-advantaged retirement savings plan offered mainly by state and local governments, and by certain tax-exempt organizations, to their employees. If you work for a city, county, state agency, public school system, police or fire department, or an eligible nonprofit, a 457(b) may be one of the retirement benefits available to you — often alongside a pension or a 403(b).

The 457(b) Retirement Calculator on this page estimates what your account could be worth by retirement, based on your salary, how much you contribute, your current age, how many years you have left before retiring, and an assumed rate of investment return. Seeing that projection in dollar terms — rather than just knowing your contribution percentage — makes it easier to judge whether your current savings habits are heading somewhere you’d be satisfied with, or whether an adjustment might be worth considering.

What Is a 457(b) Retirement Plan?

A 457(b) plan is an eligible deferred compensation plan under Internal Revenue Code Section 457(b), available to employees of state and local governments and, separately, to certain employees of tax-exempt organizations. It lets you defer part of your salary into a retirement account, generally on a pre-tax basis, where it can grow without being taxed until withdrawal.

How contributions work: you elect to defer a percentage or dollar amount of your salary each pay period, similar to a 401(k) or 403(b). Pre-tax contributions reduce your taxable income for the year you make them, with taxes generally due when you withdraw the money in retirement. Many governmental 457(b) plans also offer a Roth 457(b) option, where contributions are made after-tax and qualified withdrawals are generally tax-free — not every plan offers this, so check with your plan administrator.

Investment growth inside a 457(b) works much like other employer-sponsored plans: your contributions are invested in the options your plan offers (often mutual funds, target-date funds, or similar vehicles), and any growth compounds tax-deferred (or tax-free, for Roth contributions) until withdrawal. Distributions are generally taxed as ordinary income for pre-tax contributions when withdrawn, while qualified Roth 457(b) withdrawals are generally not taxed — see Section 14 for more detail.

How Does a 457(b) Retirement Calculator Work?

The calculator above uses six inputs to build its projection: your annual salary, your contribution rate, your current age, the number of years until you plan to retire, your expected annual investment return, and any existing 457(b) balance you already have. Here’s how each one shapes the result.

Simple example: a 42-year-old earning $75,000, contributing 8% of salary ($6,000/year), with 23 years until retirement and a 7% assumed annual return, starting from $0, would project to roughly $341,097 at retirement — about $138,000 of that from contributions and the remainder from investment growth. Change any one input and the projection moves accordingly; that’s the calculator’s core purpose.

457(b) Retirement Calculator Formula

The projection rests on standard compound-growth math — the same principles used across most retirement calculators, not a proprietary formula unique to this tool. In plain terms:

Here, r is your assumed annual return divided by 12 (a monthly rate), and n is the total number of months between now and retirement. Your existing balance grows on its own through compounding, while your ongoing contributions are treated as a monthly stream of deposits that also compound over time — together, these are known as the future value of a present sum plus the future value of an annuity. Contributions are modeled monthly because most 457(b) plans deduct them from each paycheck rather than as one annual deposit.

Actual investment returns will vary from year to year and are never as smooth as a single constant assumed rate. A projection built this way is a planning estimate, not a promise of what your account will actually be worth.

How to Use the 457(b) Retirement Calculator

457(b) Contribution Limits

IRS contribution limits are adjusted periodically and can change from year to year. As of the 2026 tax year:

Do employer contributions count toward the limit? Yes — this is an important way 457(b) plans differ from 401(k) and 403(b) plans. Under IRC §457, the basic annual limitation already includes both your own elective deferrals AND any non-elective employer contributions combined. There is no separate, larger combined employer-plus-employee limit the way 401(k) and 403(b) plans have under IRC §415(c).

Because these figures are adjusted for inflation most years, always verify the current year’s limit directly with the IRS or your plan administrator before making contribution decisions.

Source: IRS — Retirement Topics: 457(b) Contribution Limits.

457(b) Catch-Up Contributions

457(b) plans offer two distinct catch-up provisions, and understanding the difference matters most for employees within a decade or so of retirement.

Age-50-and-over catch-up: available to participants who are 50 or older at any point during the year, adding $8,000 to the standard limit for 2026 ($32,500 total). Under SECURE 2.0, participants whose prior-year wages exceeded an inflation-indexed threshold ($145,000, subject to adjustment) must make this catch-up as a Roth (after-tax) contribution; if the plan doesn’t offer a Roth option, those higher earners can’t make the age-50 catch-up at all.

Special 457(b) catch-up (“the 3-year rule”): available only during the three taxable years immediately before a participant’s plan-defined normal retirement age, and only if the plan permits it. In those years, a participant may defer up to the lesser of (a) twice the standard 457(b) limit, or (b) the “underutilized” limit — essentially, the sum of unused contribution room from earlier years the participant was eligible but didn’t contribute the maximum. This special catch-up can be made on a pre-tax basis.

This is why the rules matter most for employees approaching retirement: someone in their last few years before their plan’s normal retirement age may be able to defer significantly more than the standard limit, which can meaningfully change how much they’re able to set aside in a short window — but only if they know the provision exists and confirm their eligibility with their employer.

457(b) vs. 401(k)

Some public-sector employees have access to both a 457(b) and a 401(k) or 403(b) through the same employer — in that case, the elective deferral limits generally apply separately to each plan type, which can allow for meaningfully higher combined tax-advantaged savings than either plan alone. Whether that applies to you depends on your specific employer’s benefit structure, so confirm with HR or your plan administrator.

457(b) vs. 403(b)

Both plans share the same standard elective deferral dollar limit, but their catch-up provisions, employer-contribution rules, and early-withdrawal treatment differ in ways that matter for planning. An employee with access to both a 457(b) and a 403(b) — common in public education and healthcare systems — may be able to contribute the maximum to each separately, effectively doubling their tax-advantaged contribution room compared to having access to just one.

457(b) Withdrawal Rules

457(b) withdrawal rules are genuinely different from 401(k) and 403(b) rules in some important ways — this is one of the most commonly misunderstood parts of the plan.

Separation from service: generally, you can begin taking distributions from a 457(b) after you separate from your employer (retire, resign, or are terminated), regardless of your age. Distributions may also be available for an unforeseeable emergency, as defined by IRS rules and your plan, or after plan termination.

Non-governmental 457(b) plans are different: because these plans are unfunded and not held in a trust, they generally do not allow rollovers to an IRA or another employer’s plan at all — the money must generally be distributed according to the plan’s own schedule, often triggered by separation from service or a fixed distribution date you elected. Early-access provisions are typically limited to an unforeseeable financial emergency.

Required minimum distributions (RMDs): RMD rules apply to 457(b) plans — both governmental and non-governmental — the same way they apply to 401(k) and 403(b) plans. The age at which RMDs must begin is set by federal law and has changed in recent years; verify the current required beginning age directly with the IRS or your plan administrator rather than assuming a specific age.

Rollovers: governmental 457(b) plans generally permit rollovers to a traditional IRA, another governmental 457(b), a 401(k), or a 403(b), subject to the plans involved accepting the rollover. Non-governmental 457(b) plans generally do not permit rollovers out of the plan at all.

How Much Should I Contribute to My 457(b)?

There’s no single contribution percentage that fits every 457(b) participant. A few general principles worth considering, rather than a fixed rule:

• Starting early gives contributions more time to compound — even a modest rate started sooner can outperform a higher rate started later, as shown in Section 12.
• Increasing contributions gradually, such as with each raise, is often easier to sustain than a single large jump.
• Taking advantage of any employer contribution where your plan offers one, since it’s effectively additional compensation tied to your own participation.
• Considering tax treatment — whether pre-tax or Roth contributions fit your current versus expected future tax situation.
• Raising contributions after salary increases, so your savings rate grows along with your income rather than staying fixed in dollar terms.
• Balancing retirement savings with emergency savings and other priorities — an emergency fund and manageable debt levels are worth weighing alongside how aggressively you contribute.

Because these factors vary so much by person, this article doesn’t recommend one contribution rate for everyone. Testing a few different rates in the calculator against your own numbers is generally more informative than following a generic target.

How Much Can a 457(b) Grow?

Your projected balance responds to several factors together: your starting age, retirement age, contribution amount, assumed investment return, compounding, and — for those whose salary rises over a career — increases to their contribution amount along the way. The clearest way to see this is to hold everything constant except one variable. Here’s a hypothetical comparison of three people with identical salaries and contribution rates, differing only in the age they start:

Assumptions for all three: $65,000 salary, 7% contribution rate, 7% assumed annual return, no existing balance, monthly compounding. These are hypothetical illustrations meant to show the mathematical effect of time — not a prediction of actual investment performance for any individual.

The gap between starting at 30 versus 50 is dramatic — roughly 5.7 times the balance — despite an identical contribution rate the entire time. That’s the practical argument for starting as early as your circumstances allow, even at a smaller percentage, and increasing it later as your income grows.

457(b) Retirement Income: Turning Savings Into Income

A projected balance is only half the picture — the other half is how you might convert it into income once you retire. A few concepts worth understanding:

Withdrawal strategies and sustainable withdrawals: many retirees think in terms of an annual withdrawal rate — a percentage of the balance withdrawn each year, sometimes adjusted for inflation. There’s no single “correct” withdrawal rate that works for everyone or is guaranteed to make a balance last a specific number of years; it depends on your balance, other income sources, life expectancy, and investment performance during retirement.

Required minimum distributions: once you reach the federally required age, you’ll generally need to begin taking at least a minimum distribution each year, calculated using IRS life-expectancy tables — verify the current required age and calculation method with the IRS or your plan administrator.

Taxes: pre-tax 457(b) withdrawals are generally taxed as ordinary income in the year received; Roth 457(b) qualified withdrawals are generally not. Your tax bracket in retirement — which may differ from your working-years bracket — affects how much of a withdrawal you actually keep.

Sequence-of-returns risk: the order in which investment gains and losses occur matters more once you’re withdrawing money than while you’re still contributing. A market downturn early in retirement, combined with ongoing withdrawals, can have a larger long-term impact than the same downturn happening later — this is a real risk worth discussing with a financial professional as retirement approaches.

Inflation and longevity: a fixed dollar withdrawal buys less over time as prices rise, and retirements can last decades — both are reasons many retirees plan conservatively rather than assuming a static, best-case scenario.

Pre-Tax 457(b) vs. Roth 457(b)

Which option fits better depends on factors like your current tax bracket versus what you expect it to be in retirement, whether you value the upfront tax reduction now or tax-free income later, and your broader financial picture. This article doesn’t tell you which to pick — that decision depends on your personal circumstances, and it’s not available on every plan (not all 457(b) plans offer a Roth option). A tax professional can help you weigh the tradeoffs for your specific situation.

Factors That Can Affect Your 457(b) Projection

• Investment returns that differ from your assumed rate.
• Fees charged by the plan or its investment options, which reduce net returns.
• Inflation, which affects the real purchasing power of a future balance.
• Salary changes, including raises or reduced hours.
• Contribution changes, whether increases or decreases over time.
• Employer contributions, if your plan offers them and the formula changes.
• Career changes, including leaving a governmental or qualifying employer.
• Market volatility, since real returns fluctuate rather than following a smooth average.
• Retirement age changes, whether retiring earlier or working longer than planned.
• Tax law changes affecting contribution limits or withdrawal treatment.
• Withdrawals taken before retirement, which reduce the balance and its future growth.

Every calculator projection reflects the assumptions entered into it — treat the result as a planning estimate to revisit periodically, not a fixed outcome.

Common 457(b) Retirement Planning Mistakes

• Starting too late — as Section 12 shows, delaying contributions has an outsized mathematical cost.
• Never increasing contributions — leaving the same dollar amount or percentage unchanged for years, even as salary rises.
• Ignoring fees — plan and fund fees compound over decades just like returns do, and can meaningfully reduce a final balance.
• Using unrealistic return assumptions — projecting with an overly optimistic rate can create a false sense of security.
• Ignoring inflation — a large future balance in nominal dollars can represent less real purchasing power than it appears.
• Not understanding plan-specific withdrawal rules — assuming general 457(b) rules apply without checking your specific plan document.
• Confusing 457(b) rules with 401(k) or 403(b) rules — particularly around the early-withdrawal penalty and catch-up provisions, which genuinely differ between plan types.
• Ignoring tax implications — not considering how pre-tax versus Roth contributions, or future tax brackets, affect the real value of savings.
• Treating projected balances as guaranteed — a calculator estimate is a planning tool, not a promise.

Frequently Asked Questions

Key Takeaways

• A 457(b) retirement calculator projects a future balance from your salary, contribution rate, age, years until retirement, and an assumed return — a planning estimate, not a guarantee.
• Governmental and non-governmental 457(b) plans have meaningfully different structures, especially around rollovers and early access to funds.
• 457(b) plans share the standard elective deferral limit with 401(k) and 403(b) plans, but offer a unique special 3-year catch-up not available in either.
• Employer contributions count toward the same basic 457(b) limit — there’s no separate higher combined cap like 401(k)/403(b) plans have.
• Governmental 457(b) distributions after separation from service are generally not subject to the 10% early-withdrawal penalty, a genuine advantage over 401(k)/403(b) plans.
• Starting contributions earlier has an outsized effect on the final projection, purely from additional years of compounding.
• Contribution limits and plan-specific rules change over time — always verify current figures with the IRS and your specific plan document.

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