If a 401(k) balance drops after you leave, separate employee deferrals, employer match, profit sharing, investment change, fees, and forfeitures. Your own employee contributions are always fully vested. Employer contributions may follow the plan’s vesting schedule. Use the Summary Plan Description and credited service records to calculate the vested percentage, then ask the plan administrator to explain each removed amount in writing.
Former employees report negative employer-profit-sharing entries or losing a large part of the displayed balance after departure. The useful question is not simply whether the old dashboard said vested; it is how the plan credited service and classified each contribution source.
Start here: a practical action plan
- Split contribution sources.
- Get plan service rules.
- Recalculate the vested amount.
- File a documented claim.
- Applying vesting to employee deferrals.
- Using calendar years without plan rules.
- Treating investment loss as forfeiture.
Separate money by contribution source
Download statements from before and after termination. Group the balance by employee pre-tax deferrals, employee Roth deferrals, employer match, profit sharing, rollover money, gains or losses, fees, and forfeiture. Employee deferrals remain 100% vested.
Obtain the Summary Plan Description and vesting schedule. The IRS explains that qualified defined-contribution plans can use immediate, cliff, or graded vesting for employer contributions, and the plan document defines how service is counted.
Worked example: apply the actual vesting percentage
Example: employee money is $28,000 and employer money is $12,000. If reliable plan records show 60% vesting in the employer source, vested employer money is 60% x $12,000 = $7,200. Total vested principal before later market movement is $28,000 + $7,200 = $35,200.
The unvested employer amount is $12,000 - $7,200 = $4,800. That arithmetic does not validate the plan’s service count. A missing year, omitted hours, acquisition history, or special plan rule can change the percentage.
| Hypothetical vesting audit | Calculation | Amount |
|---|---|---|
| Employee contributions | Always vested | $28,000 |
| Employer contributions | Source balance | $12,000 |
| Vested employer share | 60% x $12,000 | $7,200 |
| Total vested before market movement | $28,000 + $7,200 | $35,200 |
Audit hours, years, and break-in-service rules
Compare hire date, termination date, plan-entry date, hours, years of service, leaves, predecessor-employer credit, and any break in service. Payroll years and vesting years do not always align. Ask the plan for its service calculation, not only the final percentage.
Check whether the plan terminated or you reached normal retirement age under the plan, because IRS guidance identifies situations requiring full vesting. Also distinguish a forfeiture from ordinary investment loss or a distribution.
Appeal a mismatch through the plan process
Submit a written benefit claim or correction request using the procedure in the plan documents. State the contribution source, amount removed, service record, expected percentage, and requested remedy. Preserve the deadline and proof of delivery.
If the plan denies the claim, use the written appeal process and consider Ask EBSA for help understanding ERISA rights. Do not count disputed employer money as spendable retirement assets until the record is resolved.
- Split the account by contribution source.
- Get the vesting schedule and service definition.
- Recalculate credited service and vested amount.
- File a documented claim for any mismatch.
Frequently asked questions
Can an employer take back my own 401(k) contributions?
No. Employee elective deferrals are always 100% vested, though the account value can still change with investments, fees, distributions, or corrections.
Can employer match be forfeited after I leave?
Unvested employer contributions may be forfeited according to plan terms. Vested employer money cannot be forfeited merely because employment ended.
Which document controls the vesting schedule?
The plan document controls, and the Summary Plan Description should explain the participant-facing schedule and service rules.
Does three calendar years always mean fully vested?
No. The plan defines years of service and can use different permitted schedules. Audit credited hours and plan years.
Why did the dashboard previously say 100% vested?
A display can be provisional, incorrect, or based on incomplete service data. Ask for the underlying service calculation and formal plan interpretation.
What if the plan will not explain the forfeiture?
Use the plan’s written claims process, preserve appeal deadlines, and contact Ask EBSA for participant-rights assistance.
Sources and review notes
The calculations and scenarios in this guide are original BreadWinnr worked examples. We recalculated each example and checked that its parts match the stated total. Official sources support the financial concepts. Forum links document the reader problem that prompted the guide and are not treated as financial authority.
- IRS: Retirement plan vesting
- IRS: Understanding retirement plan disclosures
- Former-worker question: negative employer contribution after leaving
Read our research, testing, corrections, and source policy.
This guide provides general financial education. It does not account for your complete financial, tax, legal, or contractual situation.
Make the example yours.
Use the safe-to-spend calculator to try a different starting point.