A corporation with a 401k plan makes EFTPS payments for their payroll on a semiweekly payroll schedule. They have a 401k plan with a separate EIN for the Trust and make the 20% tax withholdings under that EIN. The question I have is do the payments for the plan trust have to comply with the deposit schedule of the corporation, or can they make the tax deposits on a monthly schedule (assuming they qualify for monthly)? Thanks for your responses.

the trust is a separate entity from the corporation. The Trust depository requirements are also separately determined from the corporation.

I think the instructions are in Pub 15 Circular E.