Extended period of personal income tax exemption for the income as far as paid to purchase investment UNIT in LTF, which does not exceed 500,000 Baht for three years. From the current, such personal income tax exemption is deductible for the purchase investment UNIT in LTF between date 1 January 2008 and 31 December 2016. Change to between date 1 January 2008 and 31 December 2020.