A forfeiture account in a 401(k) plan is a holding account inside the plan that collects the unvested portion of employer contributions when employees leave before earning full ownership of that money. Your own paycheck deferrals never go there because they are always fully vested. What lands in the account is the employer match or profit-sharing dollars a departing worker had not yet earned the right to keep. The plan holds that money temporarily, then applies it to one of a short list of IRS-approved uses.
What Ends Up in the Account
Vesting is the timeline that decides how much of the employer’s money you get to keep when you leave. Your plan document sets the schedule, and until you reach 100%, any employer contribution in your account is at risk.1Office of the Law Revision Counsel. 26 USC 411 – Minimum Vesting Standards
Federal law permits two main approaches:
- Cliff vesting, where you own none of the employer contributions until you complete a set number of years and then jump to 100%. The most restrictive cliff schedule allowed for matching contributions is three years.1Office of the Law Revision Counsel. 26 USC 411 – Minimum Vesting Standards
- Graded vesting, where you earn ownership in steps. The most restrictive graded schedule stretches over six years: 20% after year two, 40% after three, 60% after four, 80% after five, and 100% after six.1Office of the Law Revision Counsel. 26 USC 411 – Minimum Vesting Standards
Say your plan uses a six-year graded schedule and you leave after four years. You are 60% vested, so you keep 60% of the employer contributions. The remaining 40% moves into the plan’s forfeiture account. Your own contributions, and any earnings on them, come with you in full.
When the Forfeiture Actually Happens
Leaving the job does not always mean the money moves immediately. Two events can trigger the forfeiture, and the plan document decides which applies.
The first is taking a distribution. Many plans forfeit the unvested portion as soon as a terminated employee takes a full distribution of their vested balance. This keeps the accounting clean and is the more common approach.
The second is five consecutive breaks in service. If the plan does not accelerate forfeiture at distribution, it waits. Once a former employee completes five consecutive plan years without working at least 500 hours in any of them, the unvested balance is forfeited.1Office of the Law Revision Counsel. 26 USC 411 – Minimum Vesting Standards
Either way, the nonvested dollars land in the same place.
How the Plan Uses Forfeited Money
Forfeited funds cannot sit indefinitely, and the employer cannot pocket them. The plan document has to specify which of three IRS-approved uses apply.
The most common is offsetting future employer contributions. If the employer owes $50,000 in matching contributions for the year and the forfeiture account holds $10,000, the employer only needs to contribute $40,000 in new cash. The forfeiture balance covers the rest.
A plan can also apply forfeitures to reasonable plan expenses. Recordkeeping fees, third-party administration costs, and required audit fees are all fair game, provided the plan document authorizes it and the expenses are reasonable.
The third option is reallocation to remaining participants as additional employer contributions. When a plan takes this route, the allocation formula must be nondiscriminatory so it does not favor higher-paid employees over rank-and-file workers.
The plan document controls which of these are on the table. A plan that only authorizes offsetting contributions cannot redirect forfeitures to pay administrative expenses without being amended first.
The 12-Month Deadline
The IRS has proposed regulations requiring that forfeitures be used no later than 12 months after the close of the plan year in which they occurred.2Federal Register. Use of Forfeitures in Qualified Retirement Plans A forfeiture that arises during the 2025 plan year would need to be applied by the end of 2026. Letting forfeitures accumulate beyond that window is an operational compliance failure that could threaten the plan’s tax-qualified status.
Practically, that pushes plan sponsors to drive the balance to zero at least once each plan year.
Getting Forfeited Money Back After a Rehire
If you leave, take a distribution, and get rehired by the same employer within five years, you may have a path to recover forfeited money. Plans that use accelerated forfeitures can include a buy-back provision: repay the amount you previously received, and the plan restores the employer contributions that were forfeited when you left.
There is a separate rule for employees who were 0% vested at departure. Because they had no vested balance to distribute, the plan treats them as having been cashed out with a zero-dollar distribution. If one of those employees returns within five years, the plan can automatically restore the forfeited balance without requiring any repayment.
Restoration money can come from the current forfeiture account, or the employer may need to contribute additional cash if the balance is not enough. That is one reason plan sponsors cannot treat forfeitures as free money.
When Layoffs Cancel the Forfeiture
Large layoffs can override the vesting schedule entirely. Under federal law, if a plan undergoes a partial termination, every affected employee becomes 100% vested in their account balance as of that date, so there is nothing left to forfeit.1Office of the Law Revision Counsel. 26 USC 411 – Minimum Vesting Standards
The IRS uses a facts-and-circumstances test to decide whether a partial termination has occurred, but a turnover rate of 20% or more during the applicable period creates a strong presumption that one did.3Internal Revenue Service. Partial Termination of Plan An employer can push back on the presumption by showing the departures were genuinely voluntary, or that the turnover rate matched historical norms. Personnel files, employee statements, and proof that departed workers were replaced doing the same jobs all help.
Affected employees in a partial termination generally means everyone who left for any reason during the plan year in question and still has an account balance. The full-vesting requirement covers all of them, not only those who were laid off.
Common Mistakes and How They Get Fixed
Forfeiture errors are more common than most plan sponsors expect. They tend to fall into a few predictable buckets: failing to forfeit nonvested amounts on time, using forfeitures for purposes the plan document does not authorize, or letting balances pile up year after year without being applied.
The IRS offers two main paths through its Employee Plans Compliance Resolution System. Self-correction lets plan sponsors fix many errors without filing an application or paying a fee, and works best when the error is caught early and the dollars involved are small.4Internal Revenue Service. Self-Correction of Retirement Plan Errors
For bigger problems, or ones that do not qualify for self-correction, the Voluntary Correction Program requires a formal application and a user fee. As of 2026, those fees range from $2,000 for plans with up to $500,000 in net assets to $4,000 for plans with more than $10 million in assets.5Internal Revenue Service. Voluntary Correction Program (VCP) Fees If the IRS finds the problem first during an audit, penalties escalate and the plan’s tax-qualified status can be at risk.
The cheapest forfeiture mistake to fix is the one caught in the same plan year it happened. A quarterly review of the account catches most problems before they compound.