ADP/ACP TEST

The regular non-discrimination test for 401(k) plans strictly given by the IRS to be sure that a plan does not unduly benefit highly compensated employees and owners at the expense of other employees. The Actual Contribution Percentage (ACP) and Actual Deferral Percentage (ADP) test must be passed for the purpose of satisfying the IRS' non-discrimination requirements if the the plan is to push through.

If the plan wouldn't make it through the test, the employer is obliged to conduct corrective action for the protection of its qualified status within the 12-month period immediately after the end of the plan year wherein the oversight took place.