I can help you identify a bank that made a payment in QuickBooks Online (QBO), Dave.

Before we begin, may I ask if the bank you're referring to is associated with your QuickBooks Payments account, or is this related to a sales transaction associated with a bank in QBO?

In the meantime, let's outline the possible situations in identifying a bank that made a payment.

If you're referring to the bank you registered when you signed up for QuickBooks Payments, let's log in to the Merchant Service Center to verify which bank is associated with receiving customer payments:

1. Sign in to the Merchant Service Center.
2. Click on Account, then select Account Profile.
3. In the Deposit Account Information section, you'll see what bank account payment will be deposited.

Also, if you connect your QuickBooks Payments account to QBO, we can check which bank you've selected:

1. Sign in to your QBO account.
2. Go to the Settings and select Account and Settings.
3. Choose the Payments tab, then select the Chart of Accounts.
4. The bank account will appear in the Standard Deposits section.

Here's a screenshot for your reference:

Additionally, ensure that the bank account selected is linked to QBO so that payments will automatically deposit to the registered bank and transactions can be easily tracked.

On the other hand, if the payment you're referring to is related to your sales transactions in QBO, we can check their associated bank by going to the All Sales tab:

1. Sign in to your QBO account.
2. On the left navigation panel, select All Sales.
3. Click on the sales transaction that has been paid.
4. Select View Payment so you'll routed to the Receive Payment page.
5. The bank associated with the payment will appear in the Deposit To section.

I've attached screenshots for your reference:

However, if this is a customer payment, please know that the option to check the customer's bank for payment is unavailable in QBO. Alternatively, we can check your email notification when your customer pays and identify the bank they use for their payment.

Furthermore, you can check out this reference to learn how to create bank rules to automatically categorize transactions from your bank: Set up bank rules to categorize online banking transactions in QBO.

Let me know below if you need further assistance identifying the bank that made a payment or if you're referring to another payment associated with a bank. Have a great day ahead.