how to record mistaken payment and subsequent refund from supplier

Recording a mistake payment is quick and easy, @AleksandraGekofa. I'll be glad to share the steps.

You'll have to enter a supplier credit to make sure that the credit will hit the expense account, and you can deposit the money for the refund. Let me show you how:

1. Click the + New icon.
2. Select Supplier credit.
3. In the Supplier dropdown, select your supplier.
4. Enter the necessary details
5. Click Save and close.

Once done, you can now deposit the money from the refund.

1. Click the + New icon.
2. Select Bank deposit.
3. In the Account dropdown menu, select the account where you got the refund.
4. In the Add funds to this deposit section, fill out the following fields.

• • Received from: Select the supplier who gave you a refund.
  • Account: Select Accounts Payable to tie the refund to the supplier credit. This may seem a little strange, but it’s the best way to do this.
  • Payment method: Enter the method your supplier used to refund you and enter the amount.

       5. Hit Save and close.

For detailed instruction, see this article: Enter a refund from a supplier.

However, if you're using Online Banking and the transactions are showing up in the Banking feeds. Then, you'll have to match the transactions to avoid duplicates. See this article on how to match to them: Categorise and match online bank transactions in QuickBooks Online.

I've piled these articles that will help you view the transactions of your supplier and how to reconcile an account to match your bank and credit card statements:

• View supplier transactions
• Reconcile an account in QuickBooks Online

Please know you can continue to reach me here with any additional questions. Thanks for coming to the Community, wishing you continued success. Have a great day, @AleksandraGekofa.