Retirement income paid under an employer, union, or public plan, usually based on a benefit formula, contributions, or both.
A pension is retirement income paid under an employer, union, or public retirement arrangement. In everyday use, the term usually means a benefit paid regularly for life under a defined-benefit formula, although some jurisdictions also use pension for defined-contribution arrangements.
A pension is not the same as a pension plan or a pension fund. The plan contains the rules, the fund holds assets when the arrangement is funded, and the pension is the benefit earned or paid.
A traditional employer pension normally builds as the employee completes covered service. The formula may use:
The resulting benefit may be stated as a monthly lifetime payment. Some plans also offer a lump sum, a temporary bridge benefit, or an option that continues part of the payment to a surviving spouse.
Vesting determines whether the participant has a nonforfeitable right to the benefit already earned. Vesting does not necessarily mean the benefit can be collected immediately.
Assume a hypothetical plan uses this formula:
1.5% x final-average salary x years of credited service
A worker retires with a final-average salary of $80,000 and 25 years of credited service:
1.5% x $80,000 x 25 = $30,000 per year
The unreduced formula benefit is $30,000 per year, or $2,500 per month, before tax and any payment-form adjustment.
That figure is not automatically the amount the worker receives. Starting before the plan’s normal retirement age could reduce it. Choosing a joint-and-survivor form could produce a lower initial payment in exchange for continued income to a survivor. The plan may or may not provide cost-of-living adjustments.
| Term | What it describes | Main source of the payment |
|---|---|---|
| Traditional pension | Formula-based retirement benefit under a plan | Sponsor contributions, plan assets, and plan obligations |
| Defined-contribution account | Participant account with a variable balance | Contributions plus investment gains or losses, less fees |
| Annuity | Contract or payment pattern that can provide periodic income | Insurer contract or a plan’s annuity form |
| Social Security | Statutory U.S. social insurance benefit | Federal program rules and covered earnings record |
A pension can be paid as an annuity, but the terms are not interchangeable. An annuity may be purchased privately, while an employer pension arises from a retirement plan and the benefit earned under its rules.
Review the actual records rather than relying only on a benefits portal estimate:
For a U.S. private-sector plan, the Summary Plan Description and individual benefit statement are central records. The U.S. Department of Labor’s retirement plan and ERISA FAQs explain participant rights and the distinction between defined-benefit and defined-contribution plans.
In the United States, the Pension Benefit Guaranty Corporation covers many private-sector defined-benefit plans, but not defined-contribution plans, government pensions, or every private plan. Even covered benefits are subject to legal limits. The PBGC coverage guide explains the boundaries.
This page provides general financial education, not personalized pension, tax, legal, investment, or retirement advice. Pension rights and elections depend on the governing plan and applicable law.