401(k) Vesting: What You Forfeit by Leaving at Year 2

You’ve got an offer. Your 401(k) statement says $27,000, and your last day would be 22 months into the job. The number you actually walk away with may be $18,000, not $27,000, because the employer match portion isn’t yours yet. Under a three-year cliff schedule, leaving at month 22 forfeits 100% of the match. Under six-year graded, you’d keep 40% of it. The money you contributed yourself is always 100% yours from day one, no matter when you leave.

Key points

• Your own salary deferrals and their earnings are always 100% vested immediately; only employer contributions can be forfeited.
• Under a three-year cliff schedule, leaving at 35 months forfeits every dollar of match; leaving at 36 months forfeits nothing.
• Under a six-year graded schedule, vesting rises 20 points a year starting at year two, so a year-two exit keeps 20% of the match and a year-five exit keeps 80%.
• On a $9,000 match balance, the gap between a 40%-vested exit and a fully vested one is $5,400 today, and roughly $23,300 at age 65 if left to compound 30 years at 7%.
• Vesting counts years of service, not years of contribution, and plans differ on whether they use a 1,000-hour year or an elapsed-time method.

Why is part of your balance not actually yours?

Because a 401(k) statement shows two piles of money under one total, and only one pile is unconditionally yours.

Pile one is what came out of your paycheck. Every dollar you deferred, plus every dollar those deferrals earned, is yours the instant it hits the account. There is no schedule, no waiting period, no way for the employer to claw it back.

Pile two is what the employer put in. Match, profit sharing, discretionary contributions. Federal rules let an employer condition that money on you sticking around, and most do. Until the schedule says otherwise, the employer contribution sits in your account, shows up in your balance, grows with the market, and can still be taken back if you leave.

That second part surprises people. The money grows in your name. You see it on the statement. It’s still not yours.

Meet Dana, 22 months in

Dana joined in March 2024. Salary $90,000. She defers 6% and the employer matches 100% up to 6%. That’s $5,400 a year from each side.

By January 2026, 22 months in, her statement reads:

• Her deferrals plus growth: $10,900
• Employer match plus growth: $10,700
• Total: $21,600

She’s got an offer from a competitor starting March 2026, which lands her at exactly 24 months of service.

Two questions decide what she takes with her. Which schedule does her plan use? And how does the plan count a year?

What does a cliff schedule do at month 22?

It gives you nothing until the cliff, then everything at once.

A three-year cliff means 0% vested through month 35 and 100% vested at month 36. There is no partial credit. Dana leaving at month 24 walks away with her $10,900 and forfeits the entire $10,700 employer side.

The word “forfeits” is literal. The money leaves her account. Depending on plan terms, it either goes back to the employer’s general plan assets to fund future matches, or it pays plan administrative costs. Either way, Dana never sees it.

Now look at the shape of that. Month 35 to month 36 is worth $10,700 to her. One month. That’s a $10,700 pay bump for staying twelve more months from where she stands, and it’s concentrated entirely in one payroll boundary.

The maximum a cliff schedule can run is three years for employer matching contributions. A plan can be more generous. It cannot be less.

What does a graded schedule do at month 22?

It hands you a slice each year, and the slice at month 22 is small.

The standard six-year graded schedule looks like this:

Dana at exactly 24 months has completed two years of service. She’s 20% vested. She keeps $2,140 of the match and forfeits $8,560.

Same person, same balance, same departure date. Cliff schedule: she keeps $0 of the match. Graded schedule: she keeps $2,140. The plan document is the only thing that decides which.

Notice what year three is worth under graded. Going from 20% to 40% on a growing balance is a bigger raise than most annual merit increases. Not a reason on its own to stay in a job you dislike. But it’s a real number, and it belongs in the offer comparison next to the base salary.

How does the plan count “a year of service”?

Two methods, and they produce different answers for the same employee.

Hours-counting. A year of service is a 12-month period in which you work at least 1,000 hours. Roughly 20 hours a week. This method is unforgiving to part-timers and forgiving to anyone who front-loads hours. Work 1,000 hours in the first six months of a plan year and you’ve banked the whole year.

Elapsed time. The plan just measures the calendar from your hire date. Worked one hour that year or 2,000, a year is a year.

Dana’s plan uses elapsed time from her March 2024 hire date. Leaving in March 2026 gives her exactly two years. Leaving in February 2026 gives her one, which under graded vesting means 0% and a full $10,700 forfeiture.

Three weeks. $2,140.

This is the detail people miss because it never appears on a statement. The statement shows a vested percentage as of a date. It doesn’t show you which side of a boundary you’re standing on or how far the next one is.

Ask HR for two things in writing: your current vested percentage, and the exact date your next vesting increment hits. Not “sometime next spring.” The date.

What does the forfeited money cost you in 30 years?

Far more than the number on the statement, because you’re also forfeiting three decades of compounding on it.

Dana is 32. If she leaves at 24 months under the graded schedule, she forfeits $8,560. Run that forward 33 years to age 65 at a 7% annual return, compounded annually:

$8,560 × 1.07^33 = $8,560 × 9.325 = $79,822

That’s the illustration, and every assumption in it is stated: $8,560 principal, 7% nominal annual return, 33 years, annual compounding, no further contributions to that specific sum, no fees, no taxes. Change any input and the answer moves a lot. Drop to 5% and it’s $43,600. You can run your own version on the SEC’s compound interest calculator at Investor.gov.

The 7% is not a promise. It’s a round number for illustration. Actual returns can be negative for years at a stretch, and FINRA’s material on investment risk is worth reading precisely because a projection like this one hides how bumpy the path is. The arithmetic is exact. The input is a guess.

Two more things that projection ignores.

First, inflation. $79,822 in 2059 dollars buys less than $79,822 buys now. If prices rise 2.5% a year over 33 years, purchasing power falls by a factor of 1.025^33 = 2.26, so that sum is worth about $35,300 in today’s money. The BLS Consumer Price Index is the series that measures this, and it moves around considerably more than 2.5% in some years.

Second, this treats the forfeited amount as if it would have sat untouched. In practice Dana would keep contributing at her new job, possibly with a better match. The forfeiture is a one-time hole, not a permanent halt.

Does the new job’s match make up for it?

Sometimes, and you can check rather than guess.

Dana’s forfeiture at 24 months under graded is $8,560. Suppose the new employer matches 100% up to 8% instead of 6%. On the same $90,000 salary, that’s $7,200 a year of match versus $5,400. An extra $1,800 a year.

$8,560 ÷ $1,800 = 4.76 years to break even on the forfeiture, ignoring compounding and assuming she raises her own deferral to 8% to capture the full match.

Under the cliff schedule, where she forfeits the whole $10,700:

$10,700 ÷ $1,800 = 5.94 years.

Neither of those is quick. But note the assumption doing the heavy lifting: that she actually raises her deferral to 8%. If she keeps deferring 6% at the new job, the match is $5,400 either way and the improved formula buys her nothing. The match ceiling only pays out if you contribute up to it.

And the new job has its own vesting schedule. Leaving that one early restarts the same problem.

When does vesting not apply at all?

Several situations override the schedule, and they’re worth knowing before you assume the worst.

Your own money. Always 100% vested. Deferrals, Roth deferrals, after-tax contributions, and all earnings on them.

Safe harbor match. Plans that use certain safe harbor designs to avoid annual nondiscrimination testing must vest the safe harbor match immediately. If your plan is safe harbor, the whole vesting question may be moot for the match. Check the summary plan description for “safe harbor.”

Normal retirement age. Most plans fully vest you when you hit the plan’s normal retirement age while still employed, regardless of service years.

Plan termination. If the employer terminates the plan, participants generally become fully vested in what’s there.

Death or disability. Many plans fully vest on either. Not all. Read the document.

The summary plan description is the thing to read. Every participant has a right to one. It’s usually 30 to 60 pages, and the vesting section is typically two pages of it. Ask HR by name for “the summary plan description” and specify you want the vesting schedule section.

What this does not tell you

The arithmetic here is exact, but it rests on inputs that are illustrations, not facts about your plan.

The 7% return assumption is arbitrary. It’s a common figure for long-run stock market projections before inflation, and it’s convenient for showing the shape of compounding. It’s not a forecast. A portfolio could return 3% over 33 years, or it could return 10%. The uncertainty in that one input swamps every other number in this piece.

Dana’s plan is invented. Real schedules vary within the legal ceilings. Some employers vest immediately. Some use two-year cliffs. Some use graded schedules faster than the six-year version shown. Your document governs.

The break-even calculation ignores compounding on the extra match, ignores salary growth, ignores that the new plan has its own vesting cliff. It’s a rough sanity check, not a decision model.

Tax treatment is not covered here at all. Whether you roll the vested balance to an IRA, leave it in the old plan, or move it to the new employer’s plan changes what happens next, and the rules on cash-outs, small-balance forced distributions, and the tax hit on taking cash are a separate topic.

Nothing here says whether Dana should take the job. A $10,700 forfeiture is a real cost and it might still be the right move against a better role, a shorter commute, or a manager who doesn’t make her dread Mondays. The point is to price the cost, not to let it decide.

FAQ

Can my employer take back money I contributed myself?

No. Salary deferrals and their earnings are 100% vested at all times. Only employer contributions can be subject to a vesting schedule, and even those can only be forfeited when you separate from service before satisfying the schedule.

What’s the longest vesting schedule an employer can legally use?

For employer matching contributions, the outer limits are a three-year cliff or six-year graded. A plan can vest faster. It cannot vest slower than those ceilings. Non-matching employer contributions can in some plan designs run longer, which is another reason to read the actual document rather than assume.

If I leave at month 35 of a three-year cliff, do I get anything?

Under a pure three-year cliff, no employer match at all. The cliff is binary. This is why the exact separation date matters more here than under any graded schedule, and why it’s worth confirming with HR whether your plan counts elapsed time from hire date or hours worked per plan year.

Does the forfeited money still show on my statement before I leave?

Yes, and this trips people up. Employer contributions sit in your account and grow with the market whether or not you’re vested. Most statements show a total balance and a separate vested balance. The vested figure is the one that would follow you out the door.

If I get rehired by the same employer, does my old service count?

Often yes, but the rules for restoring prior service and reinstating forfeited amounts are plan-specific and depend on how long the break in service lasted. Some plans restore forfeited match if you return within a set window and repay any distribution you took. Ask before you assume either way.

Does vesting affect how much I can contribute?

No. Contribution limits are separate from vesting. Being 0% vested in the match doesn’t restrict your own deferrals at all.

What to look at next

Pull your summary plan description and find three facts: the schedule type, the service-counting method, and your current vested percentage with the date it was measured.

Then find the date of your next vesting increment. If it’s within a few months of a departure you’re considering, price the gap the way Dana’s numbers were priced above and put that figure next to the salary difference on the new offer.

If your plan turns out to be safe harbor, the match question mostly disappears and your attention is better spent on the plan’s fee structure and fund lineup.

This article is general information, not financial advice. See our disclaimer.

Read next

• 401(k) Match: The Return You Forfeit Under 6%
• HSA Triple Tax Advantage: What It’s Actually Worth in Dollars
• Roth vs Traditional: The Bracket Math That Decides Which Wins
• Social Security at 62 vs 70: Where Breakeven Lands

Also worth reading: FDIC Insurance: What the $250,000 Limit Really Covers

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