What Is a 457(b) Retirement Plan?

Updated July 9, 2026 6 min read

Government employees and workers at certain nonprofits sometimes have access to a retirement plan most private-sector workers have never heard of. A 457(b) looks similar to a 401(k) on the surface, but one rule about early withdrawals makes it genuinely different underneath.

The short answer

A 457(b) is a tax-advantaged retirement plan typically offered by state and local government employers, and by some nonprofit organizations, that lets employees defer part of their salary into an account that grows tax-deferred or, if the plan offers a Roth option, tax-free on qualified withdrawals. It works much like a 401(k) or a 403(b) for contribution purposes, but it has a distinct rule about accessing the money before retirement age that sets it apart from both.

Who typically has access

Governmental 457(b) plans are offered by state and local governments to their employees, covering a wide range of public-sector jobs from city administration to public safety and public education support roles. A separate category, sometimes called a “top hat” 457(b), is offered by certain tax-exempt organizations, but usually only to a select group of highly compensated employees or executives, not the general workforce. These two flavors of the plan follow different rules in some respects, so an employee offered a 457(b) benefits from understanding which type their employer sponsors rather than assuming it works identically across employers.

How it works step by step

Enrollment generally starts with choosing a contribution amount or percentage of pay to defer from each paycheck, along with a choice between pre-tax and Roth contributions where the plan allows it. The money is invested according to options the plan offers, similar to a target-date fund or other menu-based choices found in workplace plans generally. Contributions accumulate over the course of a career, and because many public employers also offer a pension alongside the 457(b), the plan often functions as a supplemental savings vehicle on top of that pension rather than a worker’s sole retirement resource. Some employers pair a 457(b) with another workplace plan such as a 403(b), and in governmental plans it’s sometimes possible to contribute meaningfully to both at the same time, subject to rules that are set by the government and change over time.

The withdrawal rule that makes it different

The single feature that most distinguishes a governmental 457(b) from a 401(k) or 403(b) is that separation from service generally allows access to the funds without the early withdrawal penalty that typically applies to retirement account withdrawals taken before a certain age, though ordinary income tax is usually still owed on pre-tax withdrawals. That doesn’t mean the plan encourages spending it early — the money is still meant for retirement, and taking it out sooner generally means losing years of tax-deferred growth. But for someone who leaves a governmental job before traditional retirement age and needs access to those savings, this plan behaves differently from most other early retirement withdrawal situations.

What to weigh

Because 457(b) plans vary by whether they’re governmental or non-governmental, and because the non-governmental version can carry more risk — sometimes remaining an asset of the employer rather than held in a separate trust for the employee — it’s worth understanding which type is being offered before assuming the money is protected the same way a 401(k)’s assets typically are. It’s also worth comparing the plan’s investment lineup and any fees against other available savings vehicles, since not every 457(b) offers the lowest-cost options available in the broader market.

A practical habit

Reading the plan’s own summary description, rather than relying on general comparisons to 401(k)s, is the most reliable way to understand a specific 457(b)’s rules, since the governmental and non-governmental versions diverge in ways that matter. For public-sector workers building a full retirement picture, a 457(b) is usually one piece among several, working alongside a pension or other accounts rather than replacing them.