I too am a bit surprised that the IRS has not yet debited my bank account yet with my payment. I sucessfully e-filed on Sunday 3/29 and it was accepted that evening. I scheduled the payment from 3/30 onward. I have been monitoring my bank account balance and yet nothing so far. I double checked the routing and account numbers on the e-file and they are correct. Normally when I make estimated quarterly payments they get scheduled the next day. It's a bit odd that the IRS is taking it's time collecting my balance due.
