Welcome to the Diocesan Investment FundA work of the Catholic Diocese of Lismore. Current Investment Interest Rate: 4.15%pa InvestorsWith competitive interest rates, you can invest with confidence. FormsDownload Investment Application and DIF Online Forms here. DIF Online Service24 hour access to your account. Transfers, balances, statements. Church ClientsServices offered to Catholic entities. AgenciesWhere you can find us. Contact UsReach our Customer Service Team.