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Key Takeaways
- Your own contributions and their growth are always 100% vested and yours to keep, no matter when you leave.
- Employer contributions like matching or profit-sharing may follow a vesting schedule instead of vesting right away.
- If you leave before vesting, the unvested portion goes back into the plan rather than to you or your employer as profit.
- Being rehired, your plan terminating, or reaching normal retirement age can potentially restore or accelerate your vesting.
- Only your vested balance is eligible to roll over into an IRA, so timing your exit can affect how much moves with you.
Leaving a job, whether by choice or not, raises an immediate question about your 401(k): how much of that balance is actually yours to keep? Your account statement shows a single number, but not every dollar in it may belong to you yet.
Here's the part that's easy to overlook. The money you personally contributed from your paycheck, along with any growth on it, is always 100% yours. That portion is never at risk, no matter when you leave. The non-vested (unvested) portion of employer contributions works differently. This includes employer matches you haven't "earned" yet under your plan's vesting schedule. If you leave before that money vests, it's forfeited back to the plan, where your employer can put it to use in a few different ways.
That same split matters even if you plan to roll this money into an IRA down the road. So how do you know what's already vested and what's still on the clock? It starts with understanding how vesting itself works.
What Does "Vested" Mean in a 401(k)?
Vesting determines how much of your 401(k) balance is legally yours to keep. It comes down to two categories of money.
Most people put a portion of every paycheck into their 401(k), often with the employer chipping in a matching contribution. Whatever you personally set aside, plus any growth it generates, belongs to you the moment it lands in your account. There's no waiting period and no way to lose it.
Employer contributions, including employer matches, work differently. Depending on your plan, they may be yours immediately or become yours gradually over time through a vesting schedule. The type of schedule your employer uses determines how long you'll need to stay before you're fully vested.
The Three Types of Vesting Schedules
Federal law (ERISA) caps how long an employer can make you wait before employer contributions fully belong to you. A plan can vest faster than the legal maximum, but never slower. There are three ways a plan can structure this.
- Immediate vesting: You own 100% of employer contributions as soon as they're made. There's no waiting period at all.
- Cliff vesting: Cliff vesting means no ownership at all until you hit a specific time milestone, and then you own it all at once. For example, a 3-year cliff vesting schedule means if you leave before three years, you don't keep any employer contributions. After three years, you own 100% of it.
- Graded vesting: Graded vesting is like getting a little bit of ownership each year you stay. For example, a 5-year graded vesting schedule might give you 20% ownership after year one, 40% after year two, and so on, until you're fully vested after five years.
Your exact schedule is set by your employer's Summary Plan Description (SPD). It's worth pulling that document if you're considering a job change, since schedules vary widely between employers.
What Actually Happens to Forfeited (Non-Vested) Money?
Your unvested money doesn't just disappear, and it doesn't become extra profit for your employer either. When you leave before it vests, it goes back into the 401(k) plan itself, where it's typically used to:
- Cover the plan's regular administrative costs
- Reduce what the employer contributes going forward, including matching, profit-sharing, and safe harbor contributions
- Restore your balance if you're ever rehired before the money is forfeited for good
- Be added back into the plan as an extra employer contribution for current participants, within annual contribution limits
- Offset certain contributions the plan is otherwise required to make to pass IRS nondiscrimination testing
Which of these your plan actually uses depends on its specific rules.
