Average gross rental yields from pool villas on Koh Samui sit in the 5.8-7.2% per year range as of 2026, varying by district, while freehold condos deliver 4.5-6.0% at a considerably lower entry price. Our analysts track these figures continuously, drawing on transaction prices and occupancy data reported by local booking platforms. Below we present a full district-by-district breakdown with complete calculation chains for both asset types.

The island has a permanent population of roughly 70,000, but in peak season (December through March) that number triples. Seasonality is the defining factor in Koh Samui's rental economics: peak-season occupancy reaches 78-85%, while the rainy season (September to October) pulls it down to 25-35%, based on booking platform data from Q4 2025.

Quick answer

  • 2-3 bedroom villas in the mid-market segment (Lamai, Maenam): purchase price 6-12 million THB, gross rental yield 5.8-7.2% per year
  • Freehold condos (1-2 bedrooms, Chaweng, Bophut): price 2.8-5.5 million THB, gross yield 4.5-6.0%, easier resale on the secondary market
  • Seasonality is decisive: daily rates between peak and low season differ by 40-60%
  • Samui Airport (USM), operated exclusively by Bangkok Airways, caps throughput at around 36 flights per day and pushes domestic fares to an average 3,200-5,500 THB one-way from Bangkok
  • Operating costs for holiday rentals (management, cleaning, pool upkeep, taxes) consume 35-45% of gross revenue for villas and 25-35% for condos
  • Foreign investors are subject to Thai personal income tax (PIT) or CIT if held through a company; effective rates are typically 5-15% of net income after allowable deductions

Options and scenarios

Scenario A - pool villa in Lamai (mid-market segment)

Our model uses a 3-bedroom villa purchased for 9 million THB via a Thai company structure (30+30-year leasehold on land, building owned by the company).

Calculation chain:

  • Peak daily rate (150 days): 5,500 THB, occupancy 80% = 660,000 THB
  • Off-peak daily rate (215 days): 3,200 THB, occupancy 40% = 275,200 THB
  • Annual gross revenue: 935,200 THB
  • Booking platform commission (15%): -140,280 THB
  • Property management (10% of gross): -93,520 THB
  • Cleaning and laundry (average 800 THB per turnover, approx. 180 turnovers): -144,000 THB
  • Pool and garden maintenance (8,000 THB/month): -96,000 THB
  • Insurance, minor repairs, reserve fund: -45,000 THB
  • Total operating costs: 518,800 THB (55.5% of gross)
  • Net result before tax: 416,400 THB
  • Net yield: 4.6% per year on purchase price

This is a conservative model. In our monitoring of Lamai villas, properties with active multi-platform management and responsive on-site staff reach annual occupancy of 55-60%, lifting net yield to approximately 5.2%.

Scenario B - freehold condo in Bophut (upper segment)

A 1-bedroom condo with sea view, purchased for 4.2 million THB under full foreign freehold ownership (foreign quota).

Calculation chain:

  • Peak daily rate (150 days): 3,200 THB, occupancy 75% = 360,000 THB
  • Off-peak daily rate (215 days): 1,800 THB, occupancy 38% = 147,060 THB
  • Annual gross revenue: 507,060 THB
  • Platform commission (15%): -76,059 THB
  • Common area fee (6,500 THB/month): -78,000 THB
  • Property management (10%): -50,706 THB
  • Cleaning (500 THB per turnover, approx. 145 turnovers): -72,500 THB
  • Insurance and repairs: -20,000 THB
  • Total operating costs: 297,265 THB (58.6% of gross)
  • Net result before tax: 209,795 THB
  • Net yield: 5.0% per year on purchase price

The advantages of a condo: lower entry ticket, no pool or garden costs, and freehold title provides better resale liquidity. The main drawback is the common area fee, which rises by an average of 3-5% per year in older projects.

Scenario C - premium villa in Bophut / Fisherman's Village area

The 15-25 million THB segment generates daily rates of 12,000-22,000 THB at peak season, but annual occupancy rarely exceeds 45%. Gross yields fall to 4.0-5.5% and net yields to 2.5-3.5%. In our data sets, this segment is acquired primarily for personal use, with rental income serving to partially offset holding costs.

Comparison table

Parameter Villa Lamai (9M THB) Condo Bophut (4.2M THB) Premium Villa Bophut (18M THB) Condo Chaweng (3.0M THB)
Ownership structure Leasehold + Thai company Freehold (foreign quota) Leasehold + Thai company Freehold (foreign quota)
Approx. price (USD) ~255,000 ~119,000 ~510,000 ~85,000
Peak daily rate 5,500 THB 3,200 THB 16,000 THB 2,400 THB
Annual occupancy (est.) 52-58% 50-55% 40-45% 55-62%
Gross annual revenue 935,200 THB 507,060 THB ~1,350,000 THB ~430,000 THB
Operating cost share 55% 59% 50% 52%
Net result before tax 416,400 THB 209,795 THB ~675,000 THB ~206,000 THB
Net yield 4.6% 5.0% 3.8% 6.9%
Resale liquidity Medium High Low High
Legal risk Moderate Low Moderate Low

The Chaweng condo, at the lowest entry price and highest tourist turnover, shows the strongest net yield in percentage terms - though it generates the least absolute cash.

Risks and mistakes

Island infrastructure constraints are a hard factor that many buyers overlook.

  • Samui Airport (USM) is privately owned by Bangkok Airways. The absence of competition on domestic routes keeps ticket prices 40-70% higher than on comparable routes to Phuket (HKT). This limits budget tourist volumes and compresses booking windows. Based on 2025/2026 schedule data, airport capacity is approximately 1.1 million passengers per year, against roughly 18 million at Phuket International Airport
  • Road network: the island has around 250 km of roads, with a single ring road (Routes 4169/4170). During peak season, traffic on the Chaweng strip and the Chaweng-Bophut stretch can stretch an 8 km drive to 45 minutes. This affects guest reviews and platform ratings, which in turn affect occupancy
  • Water and electricity: Koh Samui experiences water supply interruptions during the dry season (February to April). Villas with their own wells and storage tanks have a clear operational advantage. Power outages lasting 2-4 hours occur several times per month during the rainy season; installing a UPS or generator adds 150,000-300,000 THB to construction costs
  • Construction costs: the pool of contractors with experience at export-grade standards is limited. Villa construction costs run 15-25% higher than on the mainland (Surat Thani province) due to ferry transport of materials. We monitor project completions and delays of 6-12 months are not uncommon
  • Leasehold legal risk: the registered leasehold covers only the initial 30-year term. The extension (a further 30 years) rests on a separate civil agreement that is not recorded at the Land Office. If the land changes ownership, enforcing the extension clause may be difficult in practice
  • Seasonality of cash flow: many buyers model revenue using peak-season rates. In reality, 4-5 months of low season generate minimal income while fixed costs (management fees, maintenance, common area fees) run year-round

The most common structural mistake we observe among first-time buyers on Samui: purchasing a villa without a prior infrastructure audit (well, electrical transformer, access road condition) and signing contracts without verifying the title at the Land Office.

FAQ

What is the average holiday rental yield on Koh Samui in 2026?

Based on our estimates, gross yields are 5.0-7.2% for villas and 4.5-6.0% for condos, depending on district and standard. After deducting operating costs, net yields fall to 3.5-5.5% for villas and 4.0-6.9% for condos.

Can a foreigner legally rent out property on Koh Samui to tourists?

Yes, provided the owner obtains a Hotel License or registers under the short-term rental framework of the Hotel Act B.E. 2547. A significant share of villas on the island operate without this licence, exposing owners to administrative fines.

Which Koh Samui district offers the highest holiday rental return?

In our 2026 data sets, Chaweng shows the strongest net yield in percentage terms for condos, at 55-62% annual occupancy. In absolute cash terms, Lamai and Bophut lead due to higher daily rates.

How much does villa management cost on Koh Samui?

Market standard is 10-20% of gross revenue for full-service management covering marketing, reservations, check-in, cleaning coordination and minor repairs. Cleaning turnovers add 500-1,000 THB per visit and pool maintenance runs 6,000-10,000 THB per month on top.

How does seasonality affect rental income on Koh Samui?

Peak season (December to March) accounts for 60-70% of annual revenue. The rainy season (September to October) brings occupancy down to 25-35% at rates 40-60% below peak. We verify on the ground that many owners offset this by offering monthly rentals (1-3 months) at discounted rates.

Is Koh Samui more profitable for holiday rentals than Phuket?

Phuket's airport handles roughly 18 million passengers per year versus around 1.1 million at Samui, which translates into more stable year-round occupancy. Samui compensates with higher daily rates in the premium segment, but offers lower secondary-market liquidity overall.

What tax applies to rental income from Koh Samui property?

Rental income earned in Thailand is subject to Thai personal income tax (PIT) or corporate income tax (CIT) if held through a company. Effective rates are typically 5-15% of net income after allowable cost deductions. Thailand has a double taxation agreement with most major jurisdictions, which in practice allows foreign-resident investors to offset Thai tax against their home-country liability.

Is buying a condo in an older Koh Samui project worthwhile?

Older projects (over 10 years) carry lower entry prices, but the common area fee tends to rise 3-5% per year and the building fabric may require capital expenditure. Before any purchase in this segment, our analysts check the sinking fund balance and the minutes of recent co-owners' meetings.

What is the access route to Koh Samui and how does it affect an investment?

There are no direct long-haul flights to Samui. The standard route is Bangkok (Suvarnabhumi or Don Mueang) to Samui on Bangkok Airways (1 hour, 3,200-5,500 THB one-way) or a flight to Surat Thani plus a ferry (cheaper but 3-4 hours longer). The elevated access cost limits the budget-traveller segment, which in turn supports daily rate stability in the mid and upper tiers.

How does Maenam differ from Bophut for rental investors?

Maenam is quieter and more family-oriented, with land prices running 20-30% lower than Bophut. It attracts longer-stay tenants and families rather than short-break tourists. Bophut, anchored by Fisherman's Village, commands higher daily rates and stronger tourist recognition, but requires a higher entry budget.

Koh Samui remains a market defined by pronounced seasonality and genuine infrastructure constraints. Those constraints, however, also act as a natural cap on new supply and keep rental rates at a stable level. For investors working with a budget of 3-10 million THB, our analysts consider the most calibrated entry points in 2026 to be a freehold condo in Chaweng or Bophut (net yield 5.0-6.9%, high liquidity) or a villa in Lamai (net yield 4.6-5.2%, higher absolute cash flow). Realistic occupancy modelling - accounting for 4-5 months of low season and the full operating cost stack - is the single most important discipline before committing capital.

Researching property in Phuket or Koh Samui? Get in touch - our analysts will prepare a data brief for your shortlisted location.

Contact the team ->