Thailand's consumer prices rose 3.90% in October 2026 compared with October 2025, according to the Trade Policy and Strategy Office (TPSO) at the Ministry of Commerce, which published the figures on Friday 6 November. The consumer price index stood at 103.90, up 0.94% on September alone.
That is the highest headline reading in 45 months, since January 2023, the Bangkok Post reported, citing TPSO director-general Nantapong Chiralerspong. Reuters reported that it is also the first time in nearly four years that headline inflation has gone above the Bank of Thailand's target range of 1% to 3%, and that economists polled by the agency had expected a smaller rise of 3.24%.
Fuel did most of the work
The TPSO puts fuel at the centre of the jump. Fuel prices were 29.18% higher than a year earlier and on their own added 2.18 percentage points, or about 56%, of the 3.90% headline figure. The ministry also pointed to a low base, because pump prices were unusually cheap in October 2025.
The ministry's own price comparison shows how much the pump has moved. In October 2025 diesel averaged 31.35 baht a litre, gasohol 95 was 32.27 baht and gasohol 91 was 31.68 baht. In October 2026 the same fuels were 42.70, 41.47 and 40.92 baht a litre. The Nation reported that the vehicles, transport and communications group rose 10.93% year on year, with increases in school transport, inter-provincial vans, buses, motorcycle taxis and songthaews.
Fresh vegetables and prepared meals were the next biggest contributors. The Bangkok Post reported that October flooding in key growing areas pushed up vegetable prices, although it said fresh produce prices were easing back towards normal by the end of the month.
Core inflation tells a calmer story
Strip out fresh food and energy, and prices rose just 1.58% in October, according to the TPSO. Across the first ten months of 2026, headline inflation averaged 1.77%. That gap is why the ministry still describes the spike as energy-led rather than broad-based, and why it kept its full-year 2026 forecast at 1.8% to 2.2%, with a midpoint of 2.0%.
The ministry does not expect a quick reversal. It says headline inflation is likely to stay positive in November, and it is watching global energy prices, the cost of prepared meals and transport, and weather that could affect some farm produce.
What it means if you live here
For expats and long-stayers, the October numbers line up with what many will have noticed: costs tied to fuel, such as filling a car or scooter, taking a songthaew or a motorcycle taxi, and the school run, have risen much faster than the overall basket. Households that drive a lot or depend on shared transport will feel more of the increase than the 3.90% headline suggests, while those whose spending leans away from fuel and fresh food may see something closer to the 1.58% core rate.
The ministry says it is running cost-of-living relief through its Blue Flag programme, with 3,036 low-cost outlets nationwide for 90 days, and discount campaigns with 27 private partners covering 4,223 products during October and November 2026. Provincial commerce offices in all 76 provinces have been told to monitor local prices and supplies.
The October numbers are official statistics, not a forecast, and the TPSO publishes the index monthly. You can read the October release, including the fuel price table, on the TPSO website at tpso.go.th.