taxation interest deduction 问题

biwenshu1990

To fund the venture, Klamin had borrowed $1,200,000 from Aus Bank Ltd (an Australian resident bank) on 1 June 2008 on an interest only basis at a rate of 10% to partly fund the purchase of the land and the construction of the theatre building.  Interest is payable on first (1st) of each month.  .然后7月1号买的地，8月建的工厂，那什么时候开始deduct interest？