The government of Thailand approved the amendment of Royal Decree No. 604 on 24 January 2017, which was gazetted on 21 April 2016. The amendment permits a 50% additional corporate tax deduction on the expenditure acquired on additions, alterations, extensions and/or improvements of property, plant and equipment which meet the requirements of deduction under section 65 Bis (2) of the Revenue Code. This new rule will be applicable from 1 January 2017 to 31 December 2017.