A check number is only generated once the paper check has been printed and sent out. If you chose a paper check as your delivery method, here’s how to find the check number:
1. Enter your pay business bills account.
2. Go to Pay in the left sidebar.
3. Click the Payments tab.
4. In the Paid sub-tab, find the desired payment. You can also find it in the All sub-tab with the label Paid.
5. Click View Payment.
6. On the right will open the Payment summary screen.
7. Scroll down to VENDOR RECEIVED.
8. You’ll see the paper check number.
TIP: Synced with QBO?
If you sync pay business bills with QuickBooks Online, the paper check number will appear on the BILL PAYMENT in QuickBooks Online.