401(k) Vesting: Cliff and Graded Schedules Explained
401(k) vesting determines how much of an employer-funded account is nonforfeitable after specified service. Employee salary deferrals are always fully vested; traditional plans may vest employer contributions immediately, at a cliff date or in graded steps under the plan’s terms.
Timeline
- Enrollment: Identify employee and employer contribution sources and obtain the Summary Plan Description and vesting schedule.
- Each service milestone: The vested percentage of covered employer contributions increases under the plan’s service-counting method.
- Separation or vesting event: The plan determines the nonforfeitable balance, applies any required full-vesting rule and processes forfeitures or distributions under its terms.
Vesting means ownership of retirement-plan benefits. A 401(k) account can contain several sources with different rules: employee elective deferrals, employer matching contributions, employer nonelective contributions and related investment gains or losses. An employee is always 100% vested in salary deferrals and the earnings attributable to them. A traditional plan may apply a schedule to some employer-funded amounts, so the total shown on a website is not necessarily the amount the employee could keep after leaving today. [1][2][3]
Under cliff vesting, the covered employer contribution can remain 0% vested until a service milestone and then become 100% vested at once. Under graded vesting, ownership rises in steps. IRS guidance illustrates general maximum schedules of 100% after three years for a cliff or at least 20% after two years, then 20 percentage points per year through 100% after six years. A plan may vest faster—including immediately—and its written terms, not the maximum illustration, control. [1][2][4]
A “year of service” is a plan-defined measurement, not always an anniversary of the hire date. Plans may use hours, elapsed time, computation periods and break-in-service rules permitted by law. Starting late in a calendar year can sometimes produce a credited year if the hours threshold is met; part-time work can produce a different result. The Summary Plan Description should explain how service is counted and whether prior service with an acquired company or after rehire receives credit. [1][3][5]
Contribution type matters. Required contributions in safe-harbor and SIMPLE 401(k) plans are generally fully vested, while discretionary or other employer contributions may be governed by different permitted provisions. A plan can maintain separate source accounts, so one line may be fully vested while another is only partly vested. Do not infer the rule from the marketing term “match”; check the plan statement’s vested balance and the Summary Plan Description for each employer source. [2][3][4]
If employment ends before full vesting, the participant retains the vested portion and may forfeit the unvested portion under the plan’s terms. The timing of the forfeiture and whether service or a forfeited amount can be restored after reemployment depend on the plan and applicable rules. Investment gains do not turn an unvested employer source into employee money. Before choosing a departure date, request a current vested-balance calculation rather than estimating from the account total alone. [1][3][5]
Certain events can require full vesting. IRS guidance says participants must be fully vested by normal retirement age under the plan and when the plan terminates; partial plan termination rules may also affect selected participants. These concepts are technical and do not mean every layoff or employer change automatically accelerates vesting. The plan administrator should identify any applicable event, and participants can use the plan’s claim and appeal process when records or service credit appear wrong. [1][5][6]
Vesting is separate from eligibility to contribute, investment performance and permission to withdraw money. A fully vested balance can still be subject to distribution, rollover, tax and early-distribution rules. Review the Summary Plan Description, benefit statement and amendments, then compare the employer’s service record with pay and employment documents. For a material job decision or disagreement, ask the plan administrator in writing and consult current Labor Department and IRS guidance rather than relying on a generic schedule. [1][3][5][6]
Sources
- IRS — Retirement Topics: Vesting
- IRS — 401(k) Plan Qualification Requirements
- U.S. Department of Labor — What You Should Know About Your Retirement Plan
- IRS — Vesting Schedules for Matching Contributions
- IRS — Understanding Your Employer’s Retirement Plan Disclosure Documents
- IRS — Retirement Topics: Termination of Plan