If your refund amount is less than the amount remaining on your Shop Pay Installments balance, then you can expect one or both of the following: -A smaller payment balance on the final payment. -Less future payments on the remaining loan balance. If your refund amount is more than the amount remaining on your Shop Pay Installments balance, then you can expect to receive the difference as a refund to your original payment method within 3 to 10 business days. If you paid for an order in monthly payments, then you won't be refunded the paid interest. Interest is the cost of borrowing, and isn't refundable. To know more about Shop Pay installements please email us at support@gameradvantage.com