Returned payment - supplier expense

Let me help you with recording the refund, @TomasBB.

You can record this as a supplier credit to add this to the expense account you use for the supplier and then record a bank deposit. Lastly, use Pay Bills to connect the bank deposit to the supplier credit to keep your supplier expenses accurate.

Enter a vendor credit:

1. Go to the + New button and select Supplier credit or Receive supplier credit.
2. In the Supplier dropdown, select your supplier.
3. Depending on how you record purchases with this supplier, enter the Category details or Item details. 
4. Click on Save and close.

Deposit the refund:

1. Go back to the + New and select Bank deposit.
2. Choose the Account where you got the refund.
3. In the Add funds to this deposit section, select the supplier under the Received from column, Accounts Payable under the Account column, and enter the Amount of your refund.
4. Click on Save and close.

Connect the refund deposit to the supplier credit:

1. Go back to the + New button and select Pay Bills or Expense.
2. Select the bank deposit and the supplier credit you just created. Make sure the total is $0.00.
3. Click on Save and close.

Here's how to run a report with supplier totals to verify the money paid to a supplier for the year. 

You can check out this article for detailed guidance about recording the refund based on how you record transactions: Enter supplier credits and refunds in QuickBooks Online.

I'm always here if you need more help recording supplier refunds. Let me know in the Reply section. Keep safe, and have a wonderful day!