I appreciate you for joining this thread, @randialynch. I'll make sure you can record the overpayment from your vendor and apply it to any future bills in QuickBooks Online (QBO).

We can record this as a vendor credit in QBO. Let me walk you through the steps:

1. Open your QBO account, then click the (+) New button.
2. Choose Vendor credit.
   
3. In the Vendor dropdown, select your vendor.
4. Depending on how you record purchases with this vendor, enter the Category details or Item details. 
5. Fill in the necessary information.
   
6. Select Save and close.

Then, you can apply a vendor credit toward any open or future bill. When you’re ready to use the credit, follow these steps to proceed:

1. Click the + New button.
2. Choose Pay bills.
3. Select a bill for your vendor from the list. You'll see the available credit with this vendor in the Credit Applied field.
4. Complete the rest of the fields like you normally do when recording bill payments.

For more information about this process, you can refer to this article: Handle vendor credits and refunds in QuickBooks Online.

In case you want to record a vendor refund in QBO, you can follow the steps outlined in this article: Enter a refund from a vendor.

Additionally, you may open this article to view details on how to run a particular report that will reflect all payments made to vendors: Run a report with vendor totals.

Please let me know if you have additional questions or concerns about handling overpayments in QBO. I'll be here every step of the way. Keep safe!