TaxGuyBill
Level 15
Yep, the IRS says so.

"After the due date, the payment date must be the same as the date the return is transmitted, or be within the previous five days of that date.
The software you use will indicate if a payment can be scheduled or not. If you enter an invalid payment date, you will be prompted to correct the date."

https://www.irs.gov/payments/pay-taxes-by-electronic-funds-withdrawal
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