Definition
A defined contribution plan is an employer-sponsored retirement plan in which contributions are made to individual participant accounts, and each participant's retirement benefit is whatever the account produces from those contributions and investment returns.
Why it matters
Defined contribution plans are the dominant employer-sponsored retirement structure in the United States and the account type from which the majority of working-age adults will fund retirement. The structure places accumulation risk and decumulation responsibility on the participant, which shapes what defaults, tools, and lifetime income options need to be available for a DC-covered population to convert accumulated savings into retirement income.
How it works
In a defined contribution plan, contributions are defined and the benefit is whatever the account produces. Contributions may come from the participant (elective deferrals), from the employer (matching, nonelective, or profit sharing contributions), or both, and the participant directs how contributions are invested from a menu selected by the plan sponsor. The account balance is accumulated contributions plus investment gains and losses net of fees; at retirement, the balance is available for distribution as a lump sum, systematic withdrawal, rollover to an IRA, or — where the plan permits — purchase of a lifetime income option. Common DC forms include the 401(k), 403(b), 457(b), profit sharing, and thrift savings plans. In 2026, elective deferrals to a 401(k), 403(b), or governmental 457(b) plan are capped at $24,500 for participants under age 50, with an $8,000 catch-up for participants age 50 or older and an $11,250 catch-up for participants age 60 through 63 (source: IRS Notice 2025-67).
In practice
If you contribute to a defined contribution plan, what the account produces at retirement depends on three things: the contributions you and your employer make, the investment returns your account earns net of fees, and the way you choose to draw the balance down. The plan gives you an accumulated balance at retirement; it does not, by default, give you an income for life. Converting balance into income is a decision the participant makes — by managing withdrawals directly, by purchasing an individual annuity outside the plan, or by electing an in-plan lifetime income option where the plan offers one. A professional advising on a DC balance at or near retirement should be able to name explicitly which of these routes is under consideration and what each produces on a cost-of-income basis.
In the Longevity Standard Framework
The defined contribution plan is the structural context in which the Longevity Standard framework has its primary application. The DC structure places accumulation, investment allocation, and decumulation on the participant, which means that a DC-covered population approaching or in retirement is the population for whom lifetime income education has value.
Related terms
- Defined benefit plan
- 401(k) plan
- 403(b) plan
- 457(b) plan
- Profit sharing plan
- Employee Retirement Income Security Act
- Plan sponsor
- In-plan lifetime income option