Say an Offshore Trust is set up to own the shares of your IBC. This then creates a shift in the underlying legal and beneficial ownership of the IBC from you to a third party who is usually a resident of a nil tax jurisdiction ie The Trustee (who holds the Property on Trust for the beneficiaries of the Trust).dditionally as the Trust survives you (most Offshore Trusts last for at least 100 years) an Offshore Trust can be deployed as means of managing family wealth post your passing. Itâs been said before that as much as one third of the worldâs wealth is owned by âOffshoreâ Trusts. Itâs not hard to see why!