Understanding the cost of living on Koh Samui requires separating tourist-zone prices from local-area reality — the difference can be two to three times for the same goods or services. Here is a realistic breakdown by category.

Housing

Long-term rental is the main option for expats. A small pool villa in a quieter area starts at around 25,000 THB per month; a modern villa in Chaweng or Bophut runs 60,000–120,000 THB. Condos and apartments range from 10,000 to 35,000 THB monthly. Utilities (electricity, water, internet) add another 3,000–8,000 THB.

Food

A meal at a local Thai café costs 80–150 THB; dinner at a Western-style restaurant runs 400–1,500 THB per person. Shopping at Villa Market and similar Western-stocked supermarkets is noticeably more expensive than local wet markets.

Realistic monthly food budgets:

  • Budget: 8,000–15,000 THB (mostly local food and home cooking)
  • Comfortable: 20,000–35,000 THB (mixed approach)
  • Generous: 40,000+ THB (frequent restaurants, imported goods)

Transport

Monthly motorbike rental starts at around 3,500 THB; a car from 12,000 THB per month. Petrol costs approximately 40–45 THB per litre. Taxis and Grab are significantly more expensive for daily commuting.

Healthcare

Medical insurance is a necessity. A consultation at an international clinic starts at 500–1,000 THB; more complex procedures cost considerably more. Good international health insurance for one person runs 40,000–100,000 THB per year.

Entertainment

A diving trip starts from 2,000 THB; fishing from 1,500 THB; Muay Thai training 500–800 THB per session. Cinemas, spas and yoga classes are priced comparably to major cities.

Summary Budget

Minimum comfortable budget for one person (housing, food, transport, communications, basic entertainment): 60,000–80,000 THB/month (≈USD 1,700–2,300). For a family of four including school fees: 150,000–250,000 THB/month (≈USD 4,300–7,200).