Filing due on the business day after

Granted, should know by now, but has been awhile.

Received a call from an accountant on Friday, who files 5500s for his clients, asking whether 5500s due on the 31st if 31st is a weekend.

Possibly, he was looking at today as the due date as 1040 is due the following business day, isn 't this the case for any IRS tax return.

Not 100% certain, I advised file 5558 on the 31st to be safe. 

You know what "they" say about "assuming", though!

The due date of the 5558 is the due date of the original return.  If July 31 falls on a Sat, Sun, or legal holiday, the return may  be filed on the next day that is not a Sat, Sun, or legal holiday.

On 8/2/2021 at 8:15 AM, RatherBeGolfing said:

The due date of the 5558 is the due date of the original return.  If July 31 falls on a Sat, Sun, or legal holiday, the return may  be filed on the next day that is not a Sat, Sun, or legal holiday.

Thank you, so indeed August 2nd was the last day the 5500 or the 5558 could be filed for calendar year filers.