Thanks, but I actually was referring to the Plan Administrator, not the Plan itself. The Plan Administer also applies for its EIN on the SS-4 (type of entity on Line 9a would be "Plan administrator"). I am not clear if a Plan Administrator needs an EIN for each plan that for which they are the Plan Administrator. Or if the Plan Administrator only obtains one EIN and uses it for each of the plans it administers. The reason I question it is that when filing the SS-4 online and selecting "Plan administrator", it does not even ask for the name of the Plan, just the name of the Plan Administrator. The IRS was unable to provide assistance, and our CPA was unsure.