You can issue your clients full or partial refunds:
If the client paid using an online payment method, log into the merchant account of the payment processor you use in your store (e.g., Stripe) and issue the refund from there
If the client paid using a manual payment method (e.g., cash), contact your client to agree on how you'll proceed with the refund (e.g., ask the client to specify their bank account number); the client's contact details can be found in the order summary
Issuing refunds from Stripe
Access your Stripe account
On the Payments page, find the payment that needs to be refunded
Click the ellipsis ••• button and select Refund payment; by default, you’ll issue a full refund; for a partial refund, specify the preferred amount
Select a reason for the refund; if you select Other, provide an explanatory note that is attached to the refund
Click Refund
Refunds use your available Stripe balance and if it doesn’t cover the amount of the refund, Stripe debits the remaining amount from your bank account. The money reaches your customer within 5-10 business days, depending upon their bank. Learn more: Refunding and canceling payments with Stripe
After initiating a refund, you may cancel order fulfillment in your store management area: