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The end of the month will mark my 6th anniversary at CNBC. I won’t be popping champagne or anything, but I will have a serious reason to celebrate. Per corporate policy, certain company contributions to my 401(k) will fully vest.
If you’ve been in the workforce for a while, you’re probably aware of the 401(k) match. As a benefit for workers, many firms offer to match their employees’ contributions to workplace retirement accounts, up to a certain percentage of their income. For example: If you put in 6% or more, your company tells you, we’ll put in 6%, too.
That’s the deal you’ll see in plenty of job listings, anyway. As of March 2025, seventy percent of private-industry workers had access to a defined contribution retirement plan, such as a 401(k), according to the Bureau of Labor Statistics. In 2024, 81% of plans offered a match and 41% provided some type of non-matching contribution, per the Plan Sponsor Council of America.
What they’re likely being quieter about is that matching money and other types of company contributions often aren’t really yours the day your employer puts the money in your account. Instead, some or all of that matching money may still belong to the company until you’ve spent a certain amount of time working there.
“[An] unvested match isn’t a bonus you’ve earned yet,” says Jeff Judge, a certified financial planner with Chesapeake Financial Partners. “It’s a conditional promise, and the condition is time.”
In order to make informed decisions about your money, it’s important to know those conditions, financial experts say. Depending on your employer’s setup, the decision around how long to stay in your current role can be worth thousands of dollars.
“One extra month can be the difference between forfeiting everything and keeping it all,” Judge says.
How 401(k) match vesting works
Before you panic about how much money in your account is yours, remember: These rules only apply to money your employer contributed, not money that you’ve saved.
“The money you put in is yours the day it leaves your paycheck,” says Matt Chancey, a CFP with Tax Alpha Companies. “Only your employer’s money runs on a timer.”
How that timer works varies from company to company, but the IRS outlines two common models.
Cliff vesting. You receive 100% of your company contribution after a certain period, often 3 years of service. Leave the company before then, and you’ll get 0% of your what your employer put in.
Graded vesting. With these plans, your vesting percentage tends to increase for each year of service at the company. Under a common 6-year model, employees are 20% vested after two years, 40% vested after three years, and so on, reaching full vesting after six years.
As of March 2025, seventy percent of private-industry workers had access to a defined contribution retirement plan, such as a 401(k), according to the Bureau of Labor Statistics. As of 2024, matching contributions vested immediately at 44% of employers, according to PSCA data. Some 17% followed the cliff model and about 39% used graded vesting.
401(k) plan managers typically detail vesting schedules in the plan document or summary plan description, which can be found on the company’s website.
How to factor vesting into career decisions
You’d be hard-pressed to find a financial planner who’d advise against contributing enough to your plan to get a match — regardless of the vesting schedule. A matching contribution is one of the few things in finance considered “free money.”
If you contribute $10,000 to your 401(k) in a given year and your employer puts in $10,000, that’s a 100% return — more than the annual return you can expect to get on practically any investment. Even if you’re only 60% vested, that’s still a good outcome.
But if you’re thinking about leaving your company, you’d be wise to know where you stand, lest you end up leaving more money on the table than you could have.
Go to your plan website and find the breakdown of your account by contribution source. Some sites may spell out your vested and unvested balance. Others may require you to do a little back-of-the-napkin math, says Jon Lapp, a CFP with Haven Financial Advisors.
“Multiply the current balance attributable to employer contributions by your unvested percentage. For example, if the employer-funded portion is worth $20,000 and you are 60% vested, you could forfeit approximately $8,000 by leaving now,” he says.
If you have another job lined up, you may determine that taking an $8,000 hit to your 401(k) balance is worth it, if, for instance, you’re expecting a higher salary or a substantial bonus.
Or it could become immediately apparent that you should stick around, says Judge, recalling a client who received a generous offer that nevertheless wasn’t worth forfeiting 100% of her match three months before the cliff.
“Put the forfeited match, the new offer’s total comp (including its own vesting terms), and any signing bonus side by side. And don’t just look at year one. If the new job has its own multi-year vesting clock, you’re potentially resetting the countdown, not skipping it,” he says.
You may have an easier time understanding the math behind your decision if you consult with a financial professional or even a career coach. After all, you may find that no amount of matching money is worth staying at a dead-end job or passing up a golden opportunity. But you’d be wise to know the stakes of that decision as early as possible, says Judge.
“It isn’t just a math problem, either. Career trajectory and job satisfaction matter too,” he says. “But the vesting number should be on the table before the decision, not discovered afterward.”
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