Pre-Tax vs. Roth Contributions
This plan likely includes both traditional (pre-tax) and Roth (after-tax) 401(k) contributions. Each account type has separate tax rules. You can’t mix them when dividing the benefits in a QDRO. Your QDRO should state whether the alternate payee is receiving a portion from pre-tax, Roth, or both types of accounts.
It’s also important to check if the account has separate sources identified (often noted as “sources” or “money types” in the plan statements). Some plans will require proportional division across all sources; others may allow you to specify which ones to divide.

