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Educational Disclosure: This article is provided for general educational purposes only. It does not constitute financial, investment, pension, tax, legal, insurance, or retirement advice. State Employee Advisor Network is a marketing and referral platform operated by Revenx LLC. SEAN does not recommend retirement plans, contribution amounts, investments, rollovers, withdrawals, or tax strategies. Official plan information must come from the employer, retirement system, plan administrator, IRS, or another authorized source.
Retirement plans do not all work the same way.
Some promise a monthly benefit under a pension formula. Others maintain an individual account affected by contributions, investments, fees, and withdrawals. A public employee may have both types at the same time.
The name of the account also does not explain every feature. A 403(b), for example, may offer traditional and Roth contributions, multiple vendors, annuities, mutual funds, loans, or no loans. A governmental 457(b) can have distribution rules that differ from those of a 401(k), even though both allow payroll contributions.
Before comparing retirement plan types, identify:
Most workplace retirement arrangements fall into two broad categories.
A defined-benefit plan promises an eligible participant a benefit calculated under the plan’s formula.
A traditional pension may use factors such as:
The employer or retirement system generally manages the pooled investments. The participant does not ordinarily choose the investments supporting the pension.
The final benefit can still be affected by vesting, early-retirement reductions, survivor elections, service verification, taxes, and governing law.
A defined-benefit pension should not be described as guaranteeing financial security or replacing a particular percentage of salary.
A defined-contribution plan maintains an individual account.
The account value generally depends on:
Examples include 401(k), 403(b), governmental 457(b), and many 401(a) plans.
Unlike a pension, a defined-contribution plan does not ordinarily promise a specific monthly retirement benefit.
State and local employees may participate in a defined-benefit pension administered by a statewide or employer-specific retirement system.
The plan may cover:
Pension rules vary by system, membership tier, hire date, service, and occupation.
Important provisions include:
Official pension estimates must come from the retirement system. A general pension formula cannot establish an individual benefit.
A cash-balance plan is legally a defined-benefit plan, even though the benefit is described using an account-like balance.
A typical plan may credit:
The displayed balance is generally a hypothetical account used to calculate the promised benefit. It is not the same as a participant-directed 401(k) account.
The U.S. Department of Labor explains that investment gains or losses in the plan do not directly change the promised cash-balance benefit.
Depending on the plan, a participant may be able to receive:
A 401(k) is a defined-contribution plan commonly offered by private-sector employers. Certain public or nonprofit employers may also maintain qualifying 401(k) arrangements.
Employees may be able to make:
An employer may provide matching, fixed, profit-sharing, or other contributions, but employer contributions are not mandatory in every 401(k).
The IRS identifies a 401(k) as a defined-contribution plan in which employees generally contribute through payroll and choose among investments provided by the plan.
For 2026:
The plan may impose lower limits, and compensation or participation in other plans can affect the amount allowed.
A 403(b) is generally available through public schools and certain tax-exempt organizations.
It may contain:
The IRS notes that investment choices are limited to those made available through the employer’s program and that administrative costs can vary.
The general 2026 elective-deferral limit is $24,500. Eligible participants age 50 or older may have an $8,000 catch-up, while qualifying participants ages 60 through 63 may have the $11,250 higher catch-up.
Some employees with at least 15 years of service may qualify for a separate 403(b) catch-up of up to $3,000 when the plan permits it. The calculation is detailed and should be confirmed by the administrator.
A governmental 457(b) is commonly offered to state and local government employees.
It is a defined-contribution deferred-compensation plan. It may allow traditional and designated Roth contributions.
The general 2026 limit is $24,500. Eligible governmental-plan participants may also have age-based catch-up contributions.
A key distinction is that the 457(b) deferral limit is generally separate from the combined individual limit applying to 401(k) and 403(b) contributions. An employee eligible for both a 403(b) and governmental 457(b) may therefore be able to contribute to each plan up to its separate applicable limit, subject to plan rules and compensation.
Governmental 457(b) plans may also offer a special catch-up during the three years before the plan’s normal retirement age. The age-50 catch-up and special three-year catch-up generally cannot both be used in the same year.
Distributions following separation from service may also receive different early-distribution treatment than 401(k) or 403(b) withdrawals.
A 401(a) is an employer-established qualified plan often used by governments, schools, universities, and other public employers.
The plan document determines:
Employees may have a 401(a) alongside a pension, 403(b), or 457(b).
Because 401(a) is a broad tax-code category, one employer’s plan may be very different from another’s.
Readers can review the existing 401(a) vs. 403(b) comparison for additional distinctions.
A hybrid retirement plan combines more than one benefit structure.
A common public-sector design includes:
The pension portion may use salary and service. The account portion may depend on employee and employer contributions, vesting, investments, and fees.
Employees should review each component separately.
Becoming vested in the pension does not necessarily mean employer contributions in the individual account are fully vested. Distribution rules can also differ.
The Thrift Savings Plan is a defined-contribution plan for eligible federal civilian employees and members of the uniformed services.
It offers:
Not every participant receives the same employer contributions.
Eligible Federal Employees Retirement System participants generally receive agency automatic contributions and may receive matching contributions under applicable rules. Some uniformed service members receive government contributions through the Blended Retirement System.
The TSP follows the same general employee-deferral limit as 401(k), 403(b), and governmental 457 plans: $24,500 in 2026, plus applicable catch-up amounts.
A traditional IRA is an individual retirement arrangement rather than an employer-sponsored plan.
For 2026:
The combined contribution limit applies across a person’s traditional and Roth IRAs.
A contribution may be deductible, partially deductible, or nondeductible depending on income, filing status, and workplace-plan coverage.
Investment earnings generally grow tax deferred. Taxable distributions are generally included in ordinary income.
A Roth IRA is funded with after-tax contributions.
Qualified distributions are generally tax-free when the applicable five-year and age, death, or disability requirements are met.
Roth IRA contribution eligibility is subject to income limits. For 2026, the contribution phaseout generally applies between:
Regular Roth IRA contributions can generally be withdrawn before earnings, but conversions and earnings follow separate ordering and tax rules. This treatment should not be applied to designated Roth money inside a 401(k), 403(b), 457(b), or TSP.
A SIMPLE IRA is designed for eligible small employers, generally those with 100 or fewer employees who received at least the required compensation.
The employer must generally provide either:
For 2026, the standard employee contribution limit is $17,000, although certain qualifying plans may permit a higher amount.
Additional catch-up limits may apply. Withdrawals during the first two years of participation can be subject to a higher additional tax when no exception applies.
A SEP IRA allows an employer, including an eligible self-employed person, to make contributions for employees.
Employees do not generally make elective salary deferrals into a SEP IRA.
Employer contributions:
A SEP can be flexible for business owners, but required contributions for eligible employees should be included when evaluating the cost.
A Solo 401(k), sometimes called a one-participant 401(k), is for an owner-only business or a business involving the owner and spouse.
The owner may contribute in two capacities:
The employee-deferral limit is generally shared with other 401(k) and 403(b) plans in which the person participates. Employer contributions and the overall annual-additions limit require a separate calculation based on compensation and business structure.
Administrative and tax-filing requirements may apply as plan assets grow.
Several accounts may support retirement goals without being retirement plans.
An HSA is a tax-advantaged medical account available only to eligible individuals covered by a qualifying high-deductible health plan and meeting other requirements.
It can be retained and used during retirement, but its primary legal purpose is paying qualified medical expenses.
A brokerage account has no retirement-plan contribution limit or retirement-age restriction.
It may offer flexibility, but dividends, interest, capital gains, and sales can create current tax consequences.
Calling an HSA or brokerage account a retirement-plan type can confuse their legal treatment with pensions, IRAs, and workplace plans.
Traditional and Roth generally describe tax treatment.
Traditional contributions commonly provide current tax deferral, with taxable distributions later.
Roth contributions are made after tax. Qualified distributions may be tax-free.
The same investments may be available in both sources.
“Roth” does not automatically mean:
Workplace designated Roth accounts and Roth IRAs have different distribution and rollover rules.
Use the following checklist:
The most useful document may be called a Summary Plan Description, member handbook, plan document, annual statement, or employee benefit guide.
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Professionals participating in the network are independent third parties. They are not employees or representatives of SEAN. All services, analysis, guidance, and recommendations come solely from the professional.
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Schedule a free introduction to an independent professional.
Retirement-plan names describe different legal and benefit structures.
Pensions and cash-balance plans are defined-benefit arrangements. A 401(k), 403(b), 457(b), TSP, and many 401(a) plans are defined-contribution arrangements. Hybrid plans combine components, while IRAs are individually established accounts.
HSAs and brokerage accounts may support long-term savings but are not retirement plans.
The correct comparison begins with the employer’s actual plan documents, contribution rules, vesting, fees, investments, tax sources, and distribution provisions.
No retirement plan guarantees investment growth, tax savings, sufficient retirement income, or financial security.
The two broad categories are defined-benefit plans and defined-contribution plans.
No. A pension generally calculates a promised benefit under a formula. A 401(k) maintains an individual account affected by contributions, investments, fees, and distributions. The separate guide explains in more detail whether a 401(k) is a pension.
Possible plans include a state pension, governmental 457(b), 403(b), 401(a), 401(k), hybrid plan, or employer-specific defined-contribution account.
Possibly. A governmental 457(b) generally has a separate deferral limit from a 403(b), subject to compensation and plan rules.
The general elective-deferral limit for most 401(k), 403(b), governmental 457(b), and TSP accounts is $24,500.
No. A cash-balance plan is a defined-benefit plan expressed through a hypothetical account balance.
No. It is a tax-advantaged medical savings account, although eligible funds can remain available during retirement.
Employees should review official employer materials, the retirement-system handbook, Summary Plan Description, account statements, and plan-administrator guidance.
Jeremy contributes regularly to State Employee Advisor Network. With a deep understanding of state pension systems and public-sector benefits, he offers readers insights and strategies to optimize their retirement outcomes.
State Employee Advisor Network is a marketing and referral platform operated by Revenx LLC. We connect consumers with independent, licensed financial professionals. We are not a registered investment adviser, broker-dealer, or insurance agency, and we do not provide investment, legal, or tax advice.
All financial services are provided solely by third-party professionals. Revenx LLC receives compensation from financial professionals for marketing and referral services, which may create a financial incentive to refer individuals to participating professionals. Users should independently evaluate any financial professional before engaging their services.
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