If you're not issuing refunds via your own order management system, you can do so via the Zip Merchant Portal.
1. Select the relevant order from the order view (you can search using the customer name or order number)
2. Within the order detail page, select the blue ‘Refund’ button. Enter how much you wish to refund and a refund reference
The customer's Zip account will be credited and we will deduct this value from the next payment we make to you.