Bangchak posted today's pump prices: B7 diesel 42.94 baht/litre, B20 diesel 37.19 baht (unchanged), gasohol 95 41.44 baht, gasohol 91 41.07 baht, E20 35.69 baht. Prices exclude the Bangkok local land tax and take effect tomorrow at 05:00. For a fleet or delivery business, the gap between B7 and B20 is about 5.75 baht per litre, so check which diesel your vehicles can run on. Confirm the price at your own station before budgeting.