A Promised Income vs an Account You Build

A defined benefit plan promises employees a specific retirement income, usually calculated from salary and years of service, and the employer is responsible for funding it and carries the investment risk. A defined contribution plan, such as a 401(k), sets out how much goes in rather than what comes out: the employee’s retirement income depends on contributions and investment returns, so the employee carries the risk.

That single difference shapes everything else, from who chooses the investments to what happens when a worker changes jobs or lives longer than expected. Most private-sector employers have moved from defined benefit to defined contribution plans over recent decades, while many public-sector workers still have traditional pensions.

Retirement plans are a core part of the client recommendations section of the exam. For the full route from the exam to a career in advice, our complete guide to how to become an investment adviser representative covers every step.

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How a Defined Benefit Plan Works

A defined benefit plan, often called a pension, uses a formula to set each employee’s retirement income. A common design pays a percentage of final average salary for each year of service, so a longer career and a higher salary both raise the benefit.

The employer contributes to a pooled trust fund and invests it to meet the promised benefits. Actuaries calculate how much must be contributed each year based on assumptions about investment returns, salary growth and how long retirees will live.

If investments perform poorly, the employer must contribute more. The employee’s benefit does not change, which is why defined benefit plans are said to place the investment and longevity risk on the employer. The Series 65 Exam Preparation course at FRC covers both plan types, their tax treatment and the rules that govern them.

How a Defined Contribution Plan Works

A defined contribution plan gives each employee an individual account. The employee usually contributes part of each paycheck, often with a matching contribution from the employer, and chooses how to invest the money from a menu of options such as mutual funds and target-date funds.

The account balance at retirement depends entirely on how much was contributed and how the investments performed. There is no promised income, so the employee carries both the investment risk and the risk of outliving the savings.

The most common examples are 401(k) plans for private employers, 403(b) plans for schools and non-profit organisations, and 457(b) plans for state and local governments. Profit-sharing and money purchase plans are also defined contribution plans.

Defined Benefit vs Defined Contribution at a Glance

Worked Example: Two Routes to Retirement Income

An employee works for 30 years. Under a defined benefit plan paying 1.5 percent of final average salary for each year of service, with a final average salary of $90,000, the annual pension is 1.5 percent × 30 × $90,000, or $40,500 a year for life.

Step one: now consider a defined contribution plan instead. Suppose $6,000 a year goes into the account, from the employee and the employer combined, for 30 years. Step two: at an average return of 6 percent, the account grows to about $474,300.

Step three: if the retiree withdraws 4 percent a year, a common rule of thumb, the account provides about $19,000 of annual income. Step four: test the sensitivity. At a 5 percent return, the account reaches only about $398,600, and the same withdrawal rate produces about $15,900 a year.

The numbers show where the risk sits. The pension figure is fixed by formula, whatever markets do. The defined contribution result depends on how much is saved and on returns the employee cannot control, which is why contribution levels and asset allocation matter so much.

2026 Contribution Limits

For 2026, employees can defer up to $24,500 of salary into a 401(k), 403(b) or governmental 457(b) plan. Those aged 50 or older can add a catch-up contribution of $8,000, and those aged 60 to 63 can instead add a higher catch-up of $11,250.

Deferrals can be made on a pre-tax basis, reducing taxable income now, or into a Roth account within the plan, paid from after-tax income but withdrawn tax-free in retirement. Our comparison of traditional IRA vs Roth IRA explains the same pay-now or pay-later choice for individual accounts.

Defined benefit plans work differently. There is no employee deferral limit, because the employer funds the plan to meet the promised benefit, subject to separate federal limits on the size of the annual benefit itself.

Vesting: When the Money Becomes Yours

Vesting determines when an employee gains a non-forfeitable right to employer contributions or accrued benefits. An employee’s own deferrals into a defined contribution plan are always fully vested immediately.

Employer contributions to a defined contribution plan must vest at least as fast as either a three-year cliff schedule, where nothing vests until three years of service and then everything does, or a graded schedule that reaches full vesting after six years.

Defined benefit plans may use slightly longer schedules: a five-year cliff or a graded schedule reaching full vesting after seven years. Employees who leave before vesting forfeit the unvested portion, which matters when a client is weighing a job change.

Employer Matching and Auto-Enrollment

Many defined contribution plans include an employer match, such as 50 cents for every dollar the employee contributes up to 6 percent of salary. An employee who contributes less than the amount needed to receive the full match is leaving part of their pay unclaimed, which is why capturing the full match is usually the first step in any retirement savings plan.

Plans increasingly enroll employees automatically at a set contribution rate, often with automatic increases each year, unless the employee opts out. Rules introduced by the SECURE 2.0 Act require most new 401(k) and 403(b) plans established after 2022 to include automatic enrollment.

Defaults matter because time matters. Contributions made early in a career have decades to grow through compound interest, and a broadly diversified default investment helps protect participants who never revisit their choices, the principle of diversification applied at scale.

Study Retirement Plans With FRC

Retirement plans combine tax rules, employment law and investment choices, and the exam tests all three. Our Series 65 course takes you through defined benefit and defined contribution plans, IRAs, rollovers and distributions, step by step.

Consider studying with FRC for every exam on your route. Explore our USA exam courses, from the SIE through the Series 7, Series 63 and Series 65.

To take advantage of the membership, explore FRC Professional Membership, which gives you a verified Digital Profile that shows employers your real-time course progress, together with the Video Resume. Current offers are on our membership deals page.

ERISA and Plan Fiduciaries

Most private-sector retirement plans are governed by the Employee Retirement Income Security Act of 1974, known as ERISA. It sets standards for participation, vesting, funding and reporting, and it applies to both defined benefit and defined contribution plans.

ERISA imposes strict duties on plan fiduciaries, the people who manage the plan or choose its investments. They must act solely in the interest of participants, act prudently, diversify plan investments and keep costs reasonable, the same core principles behind any fiduciary role.

Government plans and most church plans are exempt from ERISA. Advisers who help design plan menus or advise participants may themselves be ERISA fiduciaries, and recommendations to roll plan assets into an IRA must meet Regulation Best Interest or the adviser’s fiduciary duty.

The PBGC and Pension Protection

The Pension Benefit Guaranty Corporation, a federal agency, insures most private-sector defined benefit plans. If an employer’s pension plan fails without enough assets, the PBGC pays benefits up to legal limits, funded by premiums paid by plan sponsors. The maximum guaranteed benefit is set by law and adjusted each year, so some higher earners may receive less than their full promised pension.

Defined contribution plans have no equivalent insurance against investment losses. The assets belong to the participants and are held in trust, so they are protected if the employer fails, but a fall in the markets reduces the account balance directly.

That contrast is another expression of who bears the risk. In a defined benefit plan, the employer and ultimately the PBGC stand behind the promise; in a defined contribution plan, the participant’s own savings and investment decisions determine the outcome.

Hybrid Plans: Cash Balance Plans

A cash balance plan is a defined benefit plan that looks like a defined contribution plan. Each participant has a hypothetical account credited each year with a pay credit, such as 5 percent of salary, and an interest credit at a rate set by the plan.

Because the employer guarantees those credits, the investment risk stays with the employer and the plan remains a defined benefit plan in law, including PBGC coverage. Employees, however, see an account balance and can usually take it as a lump sum when they leave.

Cash balance plans are popular with professional firms and business owners who want to make large tax-deductible contributions for themselves while offering a straightforward benefit to staff.

Distributions, Rollovers and Required Minimums

Defined benefit plans usually pay a monthly annuity for life, often with a reduced survivor benefit for a spouse, and some offer a lump-sum option. Defined contribution plans pay out the account balance, which retirees can withdraw gradually, roll into an IRA or use to buy an annuity.

Both types are subject to required minimum distributions from age 73 for pre-tax money, with exceptions for those still working for the plan sponsor in some cases. Since 2024, Roth balances in workplace plans such as a Roth 401(k) are exempt from lifetime required distributions.

A retiree choosing an annuity from a defined contribution balance faces many of the same decisions covered in our comparison of fixed vs variable annuities.

The Memory Aid

Remember this line: benefit defined, employer’s risk; contribution defined, employee’s risk. Whatever the plan defines, the other side of the equation is uncertain, and whoever owns that uncertainty owns the risk.

For vesting, remember three and six for defined contribution employer money, and five and seven for defined benefit plans.

For protection, remember that the PBGC insures private pensions, not 401(k) investment losses.

Exam Traps to Avoid

The first trap is giving the investment risk in a defined benefit plan to the employee. The employer must fund the promised benefit regardless of how the investments perform.

The second trap is assuming employee deferrals in a 401(k) are subject to vesting. An employee’s own contributions are always 100 percent vested; only employer contributions follow a vesting schedule.

The third trap is assuming the PBGC protects defined contribution accounts. It insures defined benefit plans only. The fourth trap is forgetting that a cash balance plan, despite its account-style statements, is legally a defined benefit plan.

A Client Scenario

A 45-year-old client has just been offered a job at a private company with a 401(k) and a 4 percent employer match vesting over three years. She currently works for a state agency with a defined benefit pension in which she is fully vested after 15 years.

The adviser explains that her pension benefit will stay with her, frozen at its current level, and will pay a lifetime income from retirement age. The new job would shift future investment and longevity risk to her, so she would need to save consistently, capture the full match and stay at least three years to keep the employer contributions.

The adviser models her expected retirement income under both paths, including the value of the frozen pension, and helps her set a contribution rate and diversified allocation for the 401(k). The recommendation reflects her goals, time horizon and risk tolerance, the basis of every suitability judgment.

The Dictionary as a Video Library

The FRC dictionary is a study tool, not just a glossary. Every entry pairs a written explanation with deep-dive video, on-page quizzes and interactive flash cards, so you can read a concept, watch it explained and test yourself in one place.

Rules and duties are covered in the same depth, from Regulation Best Interest to the fiduciary standard. Use the FRC dictionary to open every term in this article as its own explanation, video and quiz.

Practice Questions to Test Yourself

Question one: In a defined benefit plan, who bears the investment risk? The employer, because it must fund the promised benefit regardless of investment results.

Question two: An employee contributes to a 401(k) for two years and then leaves. The employer match vests on a three-year cliff schedule. What does the employee keep? All of the employee’s own contributions and their earnings, but none of the employer match, because the three-year cliff had not been reached.

Question three: Which federal agency insures private-sector defined benefit plans? The Pension Benefit Guaranty Corporation, known as the PBGC.

Question four: What is the 2026 employee deferral limit for a 401(k) for a 52-year-old? $32,500: the $24,500 limit plus the $8,000 catch-up for those aged 50 or older.

Question five: A plan credits each participant’s hypothetical account with a pay credit and a guaranteed interest credit. What type of plan is it? A cash balance plan, which is legally a defined benefit plan because the employer guarantees the credits.

Turn Planning Knowledge Into Career Evidence

Retirement plan knowledge is valued in wealth management, retirement plan consulting and corporate benefits roles. FRC’s Digital Profile shows employers the courses you are actively studying and the progress you have earned through assessed learning, verified by FRC, and a QR code on your resume takes them straight to it.

The FRC Video Resume lets a hiring manager hear you before the interview. Walking a client through a pension against a 401(k) decision shows exactly the clarity an advisory firm wants.

Candidates returning to the exam should note that the wait after a third failure drops from 180 days to 60 days for exam windows opened on or after January 4, 2027, as explained in our article on the Series 65 retake rule change.

Related Questions

Continue with Traditional IRA vs Roth IRA for individual retirement accounts, and What Is a 1035 Exchange? for moving between insurance contracts.

For retirement income products, read Fixed vs Variable Annuity and Term vs Whole Life Insurance.

Key Points to Retain

A defined benefit plan promises a set retirement income based on a formula, and the employer bears the investment and longevity risk. A defined contribution plan defines what goes in, and the employee bears the risk, with retirement income depending on contributions and returns.

For 2026, the 401(k) deferral limit is $24,500, with an $8,000 catch-up at 50 and an $11,250 catch-up at ages 60 to 63. Employee deferrals vest immediately, employer money follows vesting schedules, ERISA governs most private plans, and the PBGC insures private defined benefit plans.

For the exam’s structure and requirements, see the Series 65 dictionary entry, and for the role the exam leads to, read our guide to what an investment advisor representative is.