1. Employer Contributions and Vesting
One common mistake in dividing 401(k) plans is assuming all of the balance is available for division. In reality, only the participant’s vested portion is eligible for distribution. The employer portion often comes with a vesting schedule. If the employee hasn’t worked long enough, some of those employer contributions may be forfeitable.
For example, if the employee’s balance includes $20,000 in employer contributions, but they’re only 60% vested, only $12,000 is available for division. Your QDRO should specify how to handle vesting—whether the alternate payee’s share adjusts based on vesting or whether only the vested portion is divided.

