Thailand remains one of the more affordable relocation destinations in Asia for foreign residents, though costs vary sharply by city and lifestyle. A single person living modestly in Chiang Mai or a secondary city can budget roughly THB 30,000-45,000/month (excluding rent); Bangkok runs meaningfully higher, roughly THB 45,000-70,000/month for a comfortable but non-luxury lifestyle including a central condo rental. Local Thai food and transport remain very cheap by international standards; imported goods, international schooling, and Western-style dining/entertainment are the biggest cost drivers that push expat budgets up compared to living like a local.
Budgeting realistically for Thailand means separating 'living locally' costs (very cheap) from 'living like an expat' costs (imported goods, international schools, Western dining) — the gap between the two is large and easy to underestimate before arrival.
Key Facts
Single-person budget outside Bangkok (e.g. Chiang Mai), excluding rent: roughly THB 30,000-45,000/month for a comfortable modest lifestyle.
Single-person budget in Bangkok, excluding rent: roughly THB 45,000-70,000/month for a comfortable lifestyle.
Local Thai food (street food, local restaurants) is very cheap — a meal can cost THB 40-100; Western/imported dining costs several times more.
International school fees are one of the largest expat cost drivers, often THB 300,000-800,000+ per child per year at established international schools.
Public transport (BTS/MRT in Bangkok, songthaews elsewhere) and local taxis/ride-hailing (Grab) are inexpensive relative to Western cities.
Costs
Single person monthly budget (Chiang Mai, excl. rent): THB 30,000-45,000
Single person monthly budget (Bangkok, excl. rent): THB 45,000-70,000
Local Thai meal (street food/local restaurant): THB 40-100
Common Mistakes
Budgeting based on 'living like a local' costs while planning to maintain a Western lifestyle (imported goods, international schools, frequent Western dining) — the actual expat budget can be 2-3x higher.
Not researching international school fees early if relocating with children — they are often the single biggest line item in an expat family budget.