Setting up cap/limit on new percentage-based, non-Roth after-tax 401k option

We’ve received a request from our Benefits team to add a non-Roth, after-tax 401(k) savings option with a contribution cap based on a percentage of earnings. They’d like this implemented as soon as possible.

We recently applied a PUM update (05/31/2025) to support pre-tax enhanced/super catch-up contributions.

Allow employees to contribute after-tax (non-Roth) dollars .

• Important enrollment rules - employees may choose this option before maxing out their pre-tax or Roth 401(k) contributions.

- Limit contributions to a maximum of 5% of employee's eligible earnings.

- Ensure it works with Ben Admin and Payroll for North America.

- Stay within IRS 415(c) limits and support nondiscrimination testing.