You are able to refund all successfully authorised transactions that have been processed through your account in MySagePay.
Before doing so however, you must first ensure that the user you plan on performing the authorise with has the privileges to do so.
After logging into the account you will first need to locate the transaction you wish to refund.
To do this select the transactions tab within MySagePay and use the options available to locate the successful transaction.
Once you have located the transaction you would like to refund, you will need to click on the successful payment, release, authorise.
This will then present you with the transaction detail screen.
Now that you have located the transaction and opened the transaction detail screen you are ready to perform the refund.
In the bottom right hand corner of the transaction detail screen there is an option to refund the transaction.
By selecting this option you will then be presented with the refund screen.
Enter the amount you wish to refund, followed by your user password and select refund again.
You have now successfully refunded your transaction.