I used BillPay to send an ACH payment to a vendor's bank then learned their account was actually closed. Billpay says it was delivered. Will it bounce back to my account?

Welcome to the Community space, @KACLARK64.

I’ll help point you to the right support so we can address your concern about processing ACH payments.

I recommend contacting our QuickBooks Online Support Team. They're the best support group for such inquiries, as they can request account information. They can track the ACH payments sent to the vendor's bank via Bill Pay.

Here's how:

1. From the Search tab, click Contact Us.
2. Enter your question and select Continue.
3. Review and select from the following: Have us call you, or Chat with us.

If you need steps to cancel a scheduled bill payment, you can read this article: Learn about QuickBooks Bill Pay.

I'm still ready to back you up if you need more help with ACH Payments. I'll keep the thread open so you can comment back.