How to I record payment if the customer overpaid.

Hi there Lucy12,

If a customer pays too much, you will need to record the whole payment, and a customer return or credit will be created for the overpaid amount. Here are the steps that you can follow to record and process an overpayment: 

• From the Sales menu and choose Record invoice payment. 
• Select the Customer and choose the Bank account the payment is going to. 
• Enter the total amount of the payment (including the overpayment) in the Amount received field against the open invoice. Here's an example where the customer paid $210 instead of $200. 
• Ensure all other details of the payment are entered. 
• Click Save when you're finished. A customer return (credit) will be created for the overpayment amount. 
• Process the customer return (Sales menu > Sales returns and credits) and choose whether you want to apply the overpaid amount to an invoice or refund the customer. You can also hold onto the credit to apply to a future invoice. 

You can also check this link for more information.

Best regards,

Doreen

Thank you so much Doreen!