Short answer: a 457(b) is a retirement plan for state and local government workers (and some nonprofit employees) that works much like a 401(k) — but with its own contribution limit and, for government plans, no early-withdrawal penalty. Enter your contribution and expected return above to project your balance at retirement.
How to use this calculator
- Monthly contribution — how much you put into the plan each month, either as a dollar amount or derived from your salary-deferral percentage.
- Current balance — what you’ve already saved in the plan, if anything.
- Expected annual return — your assumed investment growth rate. This is a guess about the future, not a promise; the section on assumptions below explains how to pick a reasonable one.
- Years until retirement — how long the money will compound.
The calculator compounds your balance monthly and shows your projected total, how much of it came from your contributions versus growth, and a year-by-year trajectory. Everything runs in your browser — your numbers never leave your device.
What is a 457(b) plan?
A 457(b) is an employer-sponsored, tax-advantaged retirement plan named after section 457(b) of the tax code. It is offered by:
- State and local governments — the classic 457(b) participant is a teacher, firefighter, police officer, or other public employee (these are governmental 457(b) plans).
- Tax-exempt nonprofits — hospitals, charities, and universities can offer non-governmental 457(b) plans, usually to executives and highly compensated employees.
Contributions are made through payroll deduction, grow tax-deferred, and are taxed as ordinary income when withdrawn — the same basic shape as a traditional 401(k). But 457(b) plans have three features that make them genuinely different, covered in the sections below.
What is the 2026 contribution limit?
The IRS sets the 457(b) elective-deferral limit each year, and it can change with inflation adjustments. We don’t publish a hard number here because it changes annually — check IRS.gov for the current year’s limit before you plan around it.
What you can rely on structurally:
- The limit is separate from 401(k)/403(b) limits. If your employer offers both a 401(k) (or 403(b)) and a 457(b) — common for public employees — you can contribute the full maximum to each plan in the same year, effectively doubling your tax-advantaged savings capacity versus someone with only a 401(k).
- Catch-up provisions exist. Workers age 50 and older get an additional catch-up amount, and 457(b) plans have a special “last 3 years before retirement” catch-up that can allow even larger contributions — but you generally can’t use both catch-ups in the same year. Confirm the current figures and eligibility rules at IRS.gov or with your plan administrator.
- Employer contributions count too. If your employer contributes to the plan, those dollars count against an overall annual additions limit.
For the worked example below, we use a clearly labeled illustrative contribution of $500 per month — not any official limit — so you can see the compounding math independent of the current IRS figure.
Pre-tax vs. Roth 457(b): which should you choose?
Many governmental 457(b) plans now offer a Roth option, and the choice mirrors the classic Roth-vs-traditional decision:
- Pre-tax (traditional): contributions reduce your taxable income now; you pay ordinary income tax on withdrawals later. Better if you expect to be in a lower tax bracket in retirement than today.
- Roth: contributions are made with after-tax dollars; qualified withdrawals — including all the growth — are tax-free. Better if you expect to be in a higher bracket later, or you simply value tax-free income in retirement for flexibility.
A practical rule of thumb: early-career public employees (lower current bracket, decades of compounding ahead) often favor Roth; peak-earning years near retirement often favor pre-tax. Many participants split contributions between the two. Note that non-governmental 457(b) plans generally cannot offer a Roth option, and employer matching contributions — where offered — always go in pre-tax.
The early-withdrawal nuance: no 10% penalty
This is the 457(b)’s most underappreciated feature. With a 401(k) or 403(b), withdrawing before age 59½ typically triggers a 10% early-withdrawal penalty on top of income tax (with limited exceptions). A governmental 457(b) has no such penalty: once you separate from service, you can withdraw funds at any age and pay only ordinary income tax.
That makes the 457(b) unusually attractive for public employees planning early retirement — a firefighter retiring at 50, for example, can draw on the 457(b) immediately while leaving a 401(k) untouched until 59½ to avoid penalties. It also makes the 457(b) a reasonable candidate for the “bridge” years between early retirement and Social Security or pension income.
Two important caveats:
- If you roll 457(b) money into an IRA or 401(k), it loses this protection — the receiving account’s early-withdrawal rules then apply. Think twice before rolling if early access matters to you.
- This penalty-free access applies to governmental 457(b) plans. Non-governmental 457(b) plans have entirely different, much more restrictive distribution rules (see below).
Governmental vs. non-governmental 457(b): a critical difference
These two plan types share a name but behave very differently:
| Governmental 457(b) | Non-governmental 457(b) | |
|---|---|---|
| Who | State/local government employees | Nonprofit executives, highly paid staff |
| Asset ownership | Held in trust for participants | Remains the employer’s property until paid |
| Creditor risk | Protected like a 401(k) | Exposed to the employer’s creditors if the nonprofit fails |
| Rollovers | Can roll into IRA/401(k) at separation | Cannot roll into an IRA or 401(k) |
| Distributions | Flexible after separation, no 10% penalty | Only at separation, retirement, or as scheduled; very inflexible |
| Roth option | Often available | Generally not available |
The non-governmental version is sometimes called a “top-hat” plan. Its biggest risk is right there in the table: if the nonprofit goes bankrupt, your deferred compensation can be claimed by its creditors. Non-governmental 457(b) participants should weigh that risk — and generally avoid over-concentrating retirement savings in the plan.
How the math works
The projection uses monthly compounding of a growing balance plus regular contributions:
- Monthly growth factor = (1 + annual return ÷ 12)
- Each month: new balance = (old balance × monthly factor) + monthly contribution
- Over n months, this equals the future value of the starting balance plus the future value of an ordinary annuity: FV = P(1+i)^n + C[((1+i)^n − 1) ÷ i]
This assumes contributions are invested immediately, returns are constant (they won’t be — see the assumptions section), and no fees drag on performance. Real plan balances will bounce around this smooth curve.
A worked example
Consider a 40-year-old public-school employee who contributes an illustrative $500 per month to a governmental 457(b), starting from zero, earning an assumed 7% average annual return for 25 years until retirement at 65:
- Number of monthly contributions: 300
- Total contributed: 300 × $500 = $150,000
- Monthly growth rate: 0.07 ÷ 12 ≈ 0.5833%
- Future value of the contributions: $500 × (((1.005833)^300 − 1) ÷ 0.005833) ≈ $405,036
- Growth beyond contributions: ≈ $255,036
More than 60% of the final balance comes from compounding, not from the dollars put in. And because this worker also has access to a 403(b) through the school district, they could run the same $500/month into that plan too — the separate 457(b) limit means the two don’t crowd each other out. Try your own contribution, return, and timeline above; the year-by-year table shows how slowly the balance moves in the early years and how aggressively compounding takes over later.
Choosing a reasonable return assumption
The calculator’s output is only as honest as the return you assume. A few anchors:
- A diversified stock-heavy portfolio has historically returned roughly 7–10% annually before inflation over very long periods — but any single 10- or 20-year stretch can look very different.
- Run at least two scenarios: a base case (say 7%) and a conservative case (say 5%). If your plan only works at 10%, your plan is fragile.
- Remember that 457(b) investment menus are chosen by your employer — often a short list of mutual funds. Check each fund’s expense ratio; a 1% fee versus a 0.1% fee compounds into a large gap over 25 years.
- Inflation matters: 7% nominal growth at 3% inflation is about 4% in purchasing power. Think in real terms when judging whether the projected balance funds the retirement you want.
What this calculator doesn’t do
- It doesn’t know the current IRS contribution limit — verify at IRS.gov and don’t plan contributions above it.
- It doesn’t model employer contributions, fees, or investment allocation — all of which move the real number.
- It assumes a constant return; actual market returns are volatile and sequence-of-returns risk near retirement is real.
- It doesn’t handle non-governmental 457(b) distribution restrictions or the creditor-risk nuance — read that section before over-funding a top-hat plan.
- It is an educational planning tool, not financial, tax, or legal advice.
Frequently asked questions
Who can contribute to a 457(b) plan?
Employees of state and local governments and certain tax-exempt nonprofits whose employer offers the plan. Unlike 401(k)s, there is no self-employed or individual version — participation runs entirely through an eligible employer.
What is the 457(b) contribution limit for 2026?
The IRS sets the limit annually and adjusts it for inflation. Because the figure changes year to year, verify the current limit at IRS.gov or with your plan administrator rather than relying on a number published elsewhere. Remember that the 457(b) limit is separate from 401(k)/403(b) limits, so eligible workers with access to both can contribute the maximum to each.
Is a 457(b) better than a 401(k)?
Neither is categorically better — and many public employees have access to both. The 457(b)’s advantages are its separate contribution limit (double the tax-advantaged space) and penalty-free withdrawals after separation. The 401(k) sometimes offers better investment menus or employer matching. If you have both, funding the 457(b) first often makes sense for early-retirement flexibility.
Can I withdraw from my 457(b) before 59½ without penalty?
From a governmental 457(b), yes — after you separate from service, withdrawals are subject only to ordinary income tax, with no 10% early-withdrawal penalty. This is a major difference from 401(k)s and 403(b)s. (Rolling the money into an IRA first would forfeit this benefit.)
Can I roll a 457(b) into an IRA?
A governmental 457(b) can be rolled into an IRA, 401(k), or another eligible plan when you separate from service. A non-governmental 457(b) cannot be rolled over — distributions are paid out under the plan’s fixed schedule and taxed as received.
Should I choose pre-tax or Roth contributions in my 457(b)?
Pre-tax saves taxes now and suits peak earning years; Roth costs taxes now but delivers tax-free withdrawals later and suits early-career or lower-bracket years. Many participants split between the two. If your plan offers both, your current versus expected future tax bracket is the deciding factor.
What happens to a non-governmental 457(b) if my employer goes bankrupt?
Because the assets legally remain the employer’s property until distribution, they can be exposed to the employer’s creditors in bankruptcy. This is the central risk of non-governmental (“top-hat”) 457(b) plans — diversify your retirement savings and don’t treat the plan as risk-free.
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Methodology reviewed September 2026. IRS limits change annually — always verify the current year’s figures at IRS.gov. This page is educational content, not financial, tax, or legal advice.