Internal bitcoin transactions between Xapo accounts are not subject to processing fees.
The cost to send transactions via the bitcoin network constantly fluctuates. Since the cost to process both incoming and outgoing transactions is continuously changing, we recommend always checking this information!
Outgoing bitcoin transactions from your Xapo account to a bitcoin address outside of Xapo will be charged a fee of BTC 0.0003375.
So can anyone other than the OP confirm or refute these points? Thanks. If there are really no fees for on-chain TX I am going to switch to Xapo!