You can refund non-disputed payments to customers directly from the Payments overview page in the Dashboard. The default refund amount is the full charge amount, but you can provide an amount different than the full charge to process a partial refund.
From the Dashboard
Login to your Stripe account at Stripe.com
Find the charge to be refunded in the Payments overview page.
Click the ••• icon to the right of the charge and select Refund charge.
OR
Click on the charge and click the Refund button on the top right corner of the payment page.
Enter the amount to be refunded. The default is a full refund. For a partial refund, enter a different amount to be refunded.
Select a reason for the refund. If you select Other, you must provide an explanatory note that is attached to the refund.
Click Refund.