Thailand's energy regulator (GFPT) raised retail fuel prices effective 9 September 2026 — diesel by 0.70 baht/litre, petrol by 0.80 baht/litre — in response to surging global oil prices driven by Middle East geopolitical tensions and supply concerns. The Oil Fund's deficit has ballooned to over 83 billion baht, burning roughly 500 million baht daily in subsidies. Price adjustments are necessary to rebalance the fund and maintain its long-term stability, though they directly impact Thai SME transport and logistics costs.