Timing to Deposit Employer Contributions

Employer contributions (such as safe harbor, profit sharing, cash balance) must be deposited before the filing due date of the company return, including extension if applicable.  If your plan year end is December 31st and you have not filed the 2017 company return yet, the due date is September 17, 2018.  Thus, the due date for when employer contributions must be deposited into participants' accounts under the qualified retirement plan is also either September 17, 2018 or October 15, 2018, whichever date your company return is due.  There is not an extension of time beyond this date. 

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