We refer to the letter "Puzzled over TNB billing for July to September" by F.C. of Bangsar in the New Straits Times dated October 7th, 2016. Customers like F.C., whose monthly electricity consumption is less than 300 kWh will continue getting Goods and Services Tax (GST) exemption on their electricity bills. These customers, who have yet to receive their electricity bills due to the billing system upgrade, can rest assured that they will still benefit from the first 300 kWh exemption each month, as the GST exemption is prorated. For July to September, where the total billing period is 92 days, the GST exemption is calculated as 92/30 days x 300 kWh, which is equivalent to 920 kWh.In other words, they will be exempted from the GST if their total consumption for the three months are less than 920 kWh.