5500ez's for controlled group

Without judging the setup of this company's legacy multiple retirement plans, they have the following:

• One plan for all employees
• Each partner has their own plan

(not related to this question, the plans are tested as one controlled group, all plans mirror each other and all participants have the option for self direction)

Situation:  A new Partner has set up a new plan, and ultimately contributed $400 for the past plan year (prior to plan year end), simply to get the trust set up.

Inasmuch as a one-person plan with less than $250k does not need to file an EZ, my understanding is that because of the controlled group situation, a 5500-EZ is indeed required in this case.

Curious of any thoughts or differing opinions?

These are defined contribution plans, right?

Does each partner have a professional corporation?

On 9/19/2022 at 7:50 AM, Luke Bailey said:

These are defined contribution plans, right?

Does each partner have a professional corporation?

Yes and yes.