Thai Oil reported Q2 2026 net profit of 8.28 billion baht, up 27.9% year on year but down 57.5% from Q1, mainly from crude price swings and a 10.7 billion baht pre-tax stock loss. Government diesel price cuts at the refinery gate (9 Apr to 19 May 2026) cost it 2.3 billion baht, and a second round (9 Jul to 15 Aug 2026) is expected to cut another about 926 million baht in Q3. Its fuel-fund receivable stood at 9.7 billion baht at 30 June. For SMEs, expect continued diesel price adjustments and watch fuel-cost planning, since the state is using refinery prices to cushion consumers.