How to record a refund check from a bank, for a check that was sent out as an online bill pay to a vendor?

Hello there, @cbra2351.

You can create a Journal Entry to record the transaction, so it doesn't count as an income or credit it to the vendor. Let me guide you how:

1. Go to the +New button in the left panel.
2. Under OTHER columns, select Journal Entry.
3. Fill out the fields to create your journal entry.
4. Select Save and New or Save and Close.

For detailed steps, check out this article: Create Journal Entries. 

Upon sharing the steps above, I'd still suggest contacting your accountant. They can guide you with the process to ensure your books are accurate. You can also find one by checking out this article: Find an accountant or bookkeeper.

Also, to help you with your task in QuickBooks, just go to this link: QuickBooks Basics. Then, click + More Topics to view related articles about managing your sales, expenses, inventory, taxes, and running reports.

If there's anything else that I can help you with, please let me know by leaving a comment below. I'll be here to lend a hand. Have a good day.

I'm a bit confused on how I would record the actual deposit of the check to our new bank.

Do I not need to record the deposit because I've already made the journal entry and then I can go ahead and deposit it to the bank regularly?

This NOT an answer ... How ... do you MATCH a Bank Transaction recorded as an Intuit Refund, against a Bank Transaction that is recorded as Bill Payment or Expense to CONTRACTOR??? 

Journal Entries do nothing of the kind ... 

Hello there, Mario. Let me help you correct this.

We can start by creating a bank deposit that will increase the amount of the bank account in which you recorded the bill payment. This will put the money back in the bank account where the actual expense was made. After this, you can now match the deposit to the Intuit Refund. 

Here's how:

1. Go to Transactions.
2. Select Bank Transactions.
3. Under the For Review page, you can match the transaction with the deposit to the transaction Intuit Refund.

To expedite your review process in the future, feel free to visit this article for reference: Set up bank rules to categorize online banking transactions in QuickBooks Online.

We want to ensure that you get the best help that you need. I'll be in the comment section if you have more banking and QuickBooks-related concerns. Keep safe!