Realistic 2026 monthly costs for expats, DTV holders and retirees on Thailand’s second-biggest island — in Thai baht and US dollars. The three spending tiers as actual figures, rent by area, the island premium nobody budgets for, transport (because the taxis here are no joke), and a full category-by-category breakdown so you can build a real number, not a guess. Unbiased, never paid placement — and every figure is a planning range, not a promise.
This page is the numbers for Koh Samui. For the other big island, see the Phuket budget tables; for the capital, the Bangkok tables; and for the how to think about it — the levers behind each cost and the move-in cash nobody warns you about — read the general cost of living guide. All figures below are 2026 planning ranges at ≈ 35 THB to 1 USD; rents (especially in high season), prices and the exchange rate move, so confirm specifics before relying on them and build your own total with the cost-of-living calculator.
Most foreigners land in one of three brackets. Place yourself honestly — aspiration is where budgets break. Figures are an all-in monthly total for a single person (the premium tier assumes a family with a villa, international school and a car).
| Lifestyle tier | Per month (THB) | Per month (USD) |
|---|---|---|
| Lean / local — modest studio or 1-bed inland or north, mostly Thai food, a scooter | 35,000–55,000 | $1,000–1,570 |
| Comfortable / mid expat — nice 1-bed near a beach, local + Western dining, scooter or car, good insurance | 60,000–115,000 | $1,700–3,290 |
| Premium / family — private-pool villa, international school, car, Western dining | 170,000–420,000+ | $4,850–12,000+ |
Rent and, for families, international-school fees account for almost the entire spread between tiers; the beach premium and the island grocery premium are the Samui-specific wildcards.
Rent is the largest line for most expats and the one you control most. On Samui the dominant variables are how close to a popular beach you live and whether you have a sea view. Monthly rent for a typical furnished unit:
| Area | Studio / 1-bed | Small pool villa (2–3 bed) |
|---|---|---|
| Chaweng (main beach / nightlife / central) | ฿14–32k | ฿45–110k |
| Bophut & Fisherman's Village (upscale, north) | ฿15–35k | ฿55–140k+ |
| Choeng Mon / Bang Rak (north-east, quiet, near airport) | ฿14–30k | ฿50–120k |
| Lamai (south-east, value beach) | ฿10–22k | ฿38–80k |
| Maenam / Bang Po (north, value, expat & family) | ฿8–18k | ฿32–65k |
| Nathon / inland (local town, cheapest) | ฿6–15k | ฿28–50k |
High season (roughly Dec–Mar) asking rents and short-term rates rise sharply; 6–12-month leases are far cheaper per month than monthly stays. Compare neighbourhoods with the area comparison tool and the neighborhood finder.
Samui has no mass transit, and unlike the mainland the taxi economy is genuinely expensive — metered taxis are rare, island taxis charge tourist flat fares, and ride-hailing coverage is thin. That makes your own scooter or car the practical choice rather than a luxury. Typical monthly transport spend:
| Option | Per month (THB) | ≈ USD |
|---|---|---|
| Scooter rental + fuel | 2,800–4,500 | $80–129 |
| Owned scooter (fuel, service, insurance) | 1,000–2,000 | $28–57 |
| Car rental + fuel + insurance | 14,000–24,000 | $400–685 |
| Taxis / songthaew / ride-hailing (if car-free) | 4,000–12,000 | $114–343 |
Always wear a helmet and carry proper insurance — scooter accidents are the leading cause of expat injury on the islands, and Samui’s ring road has fast, hilly stretches. Going taxi-reliant is the most expensive way to live here.
What the “comfortable” tier looks like line by line: a nice one-bedroom within reach of a beach, a mix of local and Western life, a scooter. Adjust each line to model your own tier.
| Category | Per month (THB) | ≈ USD |
|---|---|---|
| Rent — nice 1-bed near a beach | 18,000–35,000 | $510–1,000 |
| Electricity (with AC) | 2,000–5,000 | $57–143 |
| Water | 150–400 | $4–11 |
| Internet (fibre, ~500 Mbps) | 600–900 | $17–26 |
| Mobile plan | 300–700 | $9–20 |
| Food (local + some Western; island premium on imports) | 13,000–27,000 | $370–770 |
| Transport (scooter; car if family) | 2,800–4,500 | $80–129 |
| Health insurance (healthy, 30s–40s) | 3,000–9,000 | $85–255 |
| Gym / fitness / muay thai | 1,500–4,000 | $43–114 |
| Entertainment & misc | 5,000–15,000 | $140–430 |
Watch the electricity line: many condos and villas bill at a marked-up rate rather than the government tariff, and AC runs hard in the island climate — ask before you sign. Detail in utility bills and health insurance.
Your first month is far more expensive than a steady-state month. The Thai norm of two months’ deposit plus one month’s advance means you need about three months’ rent in hand before you move in. On a 22,000 THB/month lease:
| Upfront item | Amount (THB) | ≈ USD |
|---|---|---|
| Security deposit (2 months) | 44,000 | $1,260 |
| Advance rent (1 month) | 22,000 | $630 |
| Agent commission (normally landlord-paid) | 0 | $0 |
| Internet, utility deposit & setup | 5,000–15,000 | $140–430 |
| Day-one total | 71,000–81,000 | $2,030–2,310 |
Build a separate “landing fund” for this — on top of flights and shipping. The deposit rules (and the consumer-protection cap for landlords renting five or more units) are in the renting guide.
For families this is frequently the largest cost of all, dwarfing rent. Samui has a smaller cluster of international schools than Phuket or Bangkok; annual tuition per child varies widely by school and curriculum (plus one-off enrolment and capital levies):
| School tier | Annual tuition (THB) | ≈ USD |
|---|---|---|
| Budget / bilingual | 180,000–400,000 | $5,100–11,400 |
| Established international | 400,000–750,000 | $11,400–21,400 |
| Top-tier (premium British / IB) | 750,000–1,000,000+ | $21,400–28,600+ |
If you have children, price schooling first — with fewer options on the island, place availability as well as fees can reshape which part of Samui you can live in. See the international schools guide.
Samui’s budget carries a quiet surcharge the mainland does not. Much of what you buy — supermarket groceries, imported and Western products, building and furnishing materials — arrives by ferry or plane, so prices on those items run a notch above Bangkok or even Phuket. Getting on and off the island is pricier too: Samui Airport is privately operated with above-average fares, and the budget alternative (a bus-and-ferry combo via Surat Thani) trades money for hours. Add the expensive island taxi economy from section 03, and the lesson is consistent: eat and shop local, run your own wheels, and the premium nearly disappears; lean on imports, flights and taxis, and it compounds. None of it makes Samui expensive to live well — it just rewards living like a resident.
Treat every figure here as a planning range, then make it concrete: pick your tier from section 01, choose an area from section 02, decide scooter vs car in section 03, and adjust the category lines in section 04 to match how you actually live. The cost-of-living calculator turns those choices into a single monthly total that stays current with the exchange rate, the area comparison shows where the same baht buys the best life, and the Phuket and Bangkok tables let you weigh island life against the alternatives. Get the rent-and-location decision right and the rest of the budget tends to fall into place.
Editorial analysis compiled and periodically refreshed by BAANLYY’s research team — not a live data feed.
Analysis last reviewed 2026-07-06.
Pick your tier and area, then build a real, current monthly total in seconds.
General information only — not financial advice. All figures are 2026 planning estimates at ≈ 35 THB to 1 USD and vary widely by choice, season and provider; rents, prices, insurance, school fees and the exchange rate change over time. Confirm current costs directly with landlords, providers, insurers, schools and official Thai government sources before relying on anything here. BAANLYY never takes paid placement.