Absolutely! As long as you're logged into your OnBuy account, your Cashback will be added to your Cashback Hub as soon as you've completed an order. The best part is that you can use your Cashback on OnBuy straight away - instant Cashback means instant spending!
If you add your bank details, you can choose to withdraw your Cashback as soon as you've earned £5 or more. You can do this at any time from your Cashback Hub.