There is no single Thai cost of living. A modest one-bedroom in Chiang Mai, local meals and limited transport can support a lean solo budget; the same amount in a desirable Phuket neighbourhood or central Bangkok leaves far less room. That is why a low number on social media can be technically true and still be useless for your move.
For planning in August 2026, we use THB 35,000 per month as a lean solo floor, around THB 55,000 as a more durable everyday budget and THB 90,000 as a level with much more choice in housing, food and transport. A couple can share rent and internet, so THB 55,000–140,000 is more useful than simply doubling the solo figure. These are planning bands built from current market signals, not an official national average.
A child changes the equation. Numbeo's Thailand snapshot in June 2026 put international primary-school tuition at roughly THB 244,000–780,000 a year, while its Bangkok observation was higher than the national midpoint. Spread over twelve months, that is already a large recurring line before registration fees, bus service, meals, uniforms or activities. A family that wants a bigger home near a specific school and private medical cover can therefore move into a very different budget category from a couple in the same city.
Keep one-off costs outside the headline monthly number: rental deposits, relocation, visa fees, first household purchases, flights home and medical bills paid before reimbursement. If the plan only works in a perfect month with no travel, dental work, broken phone or paperwork renewal, it is not yet a relocation budget.