Housing costs ease slightly
Housing was the second-largest expense at 5,117 baht a month, down 17 baht from a year earlier, partly reflecting lower electricity charges.
Several other spending categories also declined.
Medical treatment and personal services averaged 1,327 baht a month, down 5 baht, while clothing and footwear fell 4 baht to 444 baht.
Tobacco and alcoholic beverages edged down by 1 baht to 250 baht a month.
Transport costs show biggest increase
Transport and communications recorded the largest increase, rising 228 baht from a year earlier to an average 4,895 baht a month.
The category accounted for 23.07% of total household expenditure.
TPSO attributed the increase mainly to higher retail fuel prices and public transport fares following increases in global energy costs.
Spending on recreation, reading, education and religious activities also edged higher, rising 7 baht to 842 baht a month.
Geopolitical tensions push up living costs
TPSO said prolonged geopolitical conflicts overseas had disrupted global energy supplies and pushed up domestic fuel prices.
The increases have filtered through to travel, freight and food-production costs.
At the same time, changing household lifestyles have increased demand for prepared food instead of ingredients for cooking at home, further lifting expenditure in that category.
Some households, however, appear to be tightening their budgets by reducing spending on items that can be postponed, including clothing and alcoholic beverages, as they seek to preserve liquidity for essential everyday costs.
Flooding poses fresh risk to household bills
TPSO expects household expenditure to remain elevated in the coming months, with global oil-price volatility continuing to pose a key risk.
Year-end economic activity and holiday travel could also increase energy demand, potentially feeding through into retail prices.
Flooding in several parts of Thailand presents another near-term concern.
Damage to farmland could cause short-term volatility in agricultural prices, particularly fresh vegetables, while disruption to transport routes could affect distribution and supplies.
Flood-affected households could also face additional expenses for building materials, home repairs, electrical appliances and household equipment damaged by water.
Overall, TPSO said the expenditure structure showed that fuel, transport and food remain the main influences on Thailand’s cost of living, with energy prices capable of passing through into freight costs and the prices of a wide range of consumer goods.
The impact of flooding on agricultural output, logistics and distribution will therefore remain an important factor to monitor during the rest of the year.