Based on our estimates, annualised occupancy for professionally managed short-term rentals in Phuket sits at 60-72% across the Bang Tao - Layan corridor in 2026. On Koh Samui the figure is lower, tracking at 50-62%, with a spread of up to 15 percentage points between individual districts. Seasonality is not background noise - it is the primary variable shaping real investment returns, and any yield model that ignores it will be structurally wrong.
Our analysts have monitored nightly rates and operator reports across more than a dozen seasons. Below we break down the occupancy cycle month by month, compare three management models, and build a full income statement from gross revenue to owner net.
Quick answer
- High season (November - March) generates 55-65% of annual rental income in Phuket and up to 70% in Koh Samui
- Peak occupancy (December - February) reaches 85-95% in Bang Tao and Kamala, and 75-88% in Chaweng on Samui
- Low season (May - October) delivers occupancy of 30-45% in Phuket and 25-40% in Koh Samui, with nightly rates 35-50% below peak levels
- Rental pool operators typically retain 35-50% of gross revenue; an independent property manager charges 20-30%; self-management from abroad costs time and requires a reliable local support structure
- A Hotel License (ใบอนุญาตประกอบธุรกิจโรงแรม) is a legal requirement for any rental of less than 30 days under the Thai Hotel Act (B.E. 2547, amended B.E. 2551)
- Tax residents of countries with double-taxation agreements with Thailand should verify their local reporting obligations before remitting rental income, as Thailand amended its foreign-income rules via Royal Decree in 2024
Options and scenarios
Occupancy seasonality - how the calendar breaks down
We segment the rental year into three phases.
Phase one (November - March) is the dry season and the peak tourism window. In Phuket's premium districts - Bang Tao, Layan, Surin, Kamala - occupancy at well-managed properties consistently exceeds 80%. Nightly rates for a two-bedroom pool villa reach 6,000-12,000 THB (approximately 170-340 USD at 2026 exchange rates). On Koh Samui, peak demand concentrates in Chaweng and Bophut, driven by arrivals from Europe, the Gulf states, and China.
Phase two (April, and again October - November) represents the shoulder season. Occupancy falls to 50-65% and nightly rates soften by 20-30% relative to peak. A professional operator using dynamic pricing across OTA platforms - Airbnb, Booking.com, Agoda - can hold performance reasonably well during these windows.
Phase three (May - September) is the monsoon period. On Phuket's west coast (Karon, Kata, Nai Harn), heavy surf and persistent rain reduce beach tourism sharply; occupancy falls to 25-40%. East-facing and inland districts (Rawai, Chalong) perform somewhat better, sustaining 35-45% occupancy on the back of longer-stay guests: digital nomads and retirees on extended visits. On Koh Samui, the low season hits hardest in Lamai and Chaweng Noi (25-35%), while Maenam and Bophut on the calmer eastern coast hold at 35-45% because the sea conditions there are milder.
District-level differences - data from our tracking sets
Two contrasting location scenarios on Phuket illustrate the spread:
- Bang Tao / Layan - highest annualised occupancy in our data (65-72%), highest nightly rates, and highest acquisition prices (from approximately 8 million THB for a studio in a condotel, to 25 million THB and above for a villa). Russian and Chinese families on extended stays provide a meaningful base during the low season
- Rawai / Nai Harn - annualised occupancy of 55-63%, nightly rates 20-30% below Bang Tao, but acquisition costs are also lower (from approximately 4.5 million THB for a condominium unit). The low season can be difficult here because the area has less non-beach infrastructure to sustain demand
On Koh Samui the key contrast is Chaweng (higher rates, strong competition from branded hotels, 55-65% annual occupancy) versus Maenam (lower rates, but more stable 50-60% occupancy supported by longer-term tenants and a thinner competitive field).
Three management models - a comparative income statement
We model a two-bedroom pool villa in the Bang Tao area of Phuket. Acquisition price: approximately 12 million THB. Nightly rate in high season: 8,000 THB. Nightly rate in low season: 4,500 THB.
Full income statement - external operator model (25% commission)
- Gross annual revenue (68% occupancy, approximately 248 nights per year): 1,504,000 THB
- Operator commission (25%): -376,000 THB
- OTA platform fees (approximately 3% charged to the owner side): -45,120 THB
- Cleaning and laundry (400 THB per checkout, approximately 85 turnovers): -34,000 THB
- Utilities - electricity, water, internet (per our estimates): -72,000 THB
- Minor repairs and pool maintenance: -48,000 THB
- Property insurance: -15,000 THB
- Owner net: approximately 913,880 THB
- Net yield on purchase price: approximately 7.6%
This is an optimistic scenario, assuming professional pricing management and a well-maintained property. During the low season the operator cuts rates dynamically to sustain occupancy, which compresses per-night margin but avoids prolonged vacancy.
Hotel License - the hard legal constraint
Under the Thai Hotel Act (B.E. 2547, amended B.E. 2551), renting any property for periods of less than 30 days requires a valid hotel license. In practical terms:
- A condominium unit without a hotel license can only be rented legally for 30 days or longer - a monthly rental model
- A condotel or licensed resort may rotate guests on a nightly basis - this is the prerequisite for any rental pool arrangement
- Standalone villas in residential zones technically require a hotel license for short-term lets; enforcement has been uneven historically, but Phuket authorities have visibly intensified inspections since 2023
For any investor targeting a short-term rental income model, we verify the building's license status before completing acquisition analysis. Properties without a license realistically constrain the model to monthly rentals, which reduces the achievable average nightly rate equivalent by 30-40% relative to short-stay pricing.
Comparison table
| Parameter | Rental pool (condotel) | External operator | Self-management |
|---|---|---|---|
| Commission on revenue | 35-50% | 20-30% | 0% (but tool costs and time) |
| Typical annual occupancy | 65-75% | 60-72% | 45-60% |
| Guaranteed return | Often 5-7% for 3-5 years | No guarantee | No guarantee |
| Hidden cost of guarantee | Purchase price inflated by 15-30% | Not applicable | Not applicable |
| OTA platform fees | Included in commission | 3-15% depending on platform | 3-15% |
| Owner control | Minimal | Medium (monthly reports) | Full |
| Hotel license requirement | Yes (operator holds it) | Yes (building must have it) | Yes (building must have it) |
| Estimated net on 12M THB villa | 600,000-840,000 THB | 850,000-950,000 THB | 900,000-1,100,000 THB (high engagement required) |
Risks and mistakes
- Overstated occupancy projections - sales materials from developers and some operators quote 75-85% annual occupancy. In our data sets, realistic annualised occupancy on Phuket is 60-72% and on Koh Samui 50-62%. A 10-15 percentage point gap translates to hundreds of thousands of THB in missing revenue per year
- Ignoring the low season - the five monsoon months (May - September) generate only 20-30% of annual rental income. Any yield calculation based solely on December rates will produce a structurally misleading number
- Missing hotel license - purchasing a condominium without a hotel license with the intention of renting by the night creates both legal and financial exposure. Penalties under Hotel Act Section 59 include fines of up to 20,000 THB and/or imprisonment of up to one year
- Rental pool guarantees - a guaranteed 5-7% annual return is sometimes funded by an inflated sale price rather than actual rental performance. Once the guarantee period expires (typically 3-5 years), real occupancy and income may run 30-40% below the projections used at the point of sale
- Currency exposure - rental income is collected in THB while many ownership costs are denominated in other currencies. THB exchange rate movements in the 2023-2025 period reached 12% in some pairs. Without any hedging mechanism, the owner carries full currency risk on their net return
- Tax reporting obligations - Thailand amended its foreign-income sourcing rules via Royal Decree in 2024, affecting how income remitted to Thailand is taxed. Separately, investors who are tax residents of countries with double-taxation treaties with Thailand should confirm their local reporting requirements. We strongly recommend obtaining written advice from a qualified tax professional in both jurisdictions before structuring any income flows
FAQ
What is the average short-term rental occupancy in Phuket in 2026?
Based on our estimates, annualised occupancy for professionally managed properties on Phuket runs at 60-72%, depending on district. The highest figures appear in the Bang Tao - Layan - Surin corridor; the lowest in Rawai and Nai Harn.
When is high season in Phuket and Koh Samui?
High season runs from November through March. Peak occupancy of 85-95% occurs in December, January, and February. On Koh Samui the pattern is similar, though the precise peak can shift by two to three weeks depending on weather conditions on the eastern coast.
Can a condominium in Phuket be legally rented on a nightly basis?
Nightly rentals (stays under 30 days) require a hotel license under Hotel Act B.E. 2547. Without a license, only stays of 30 days or longer are legal. We verify building license status as part of every investment analysis we run.
What does an external rental operator charge in Phuket?
External operator commissions typically run at 20-30% of gross revenue. On top of that, owners bear OTA platform fees (3-15%), cleaning, utilities, and maintenance costs. Total operating costs typically absorb 35-45% of gross revenue.
What is the occupancy difference between Bang Tao and Rawai?
Bang Tao and Layan record annualised occupancy of 65-72% in our tracking data; Rawai and Nai Harn sit at 55-63%. The gap reflects Bang Tao's stronger tourism infrastructure, higher average property standard, and denser dining and entertainment options that sustain demand outside beach season.
Is a rental pool with a guaranteed return a sound structure?
A guaranteed return of 5-7% can look attractive on paper. However, we consistently check whether the purchase price has been inflated by 15-30% relative to comparable market transactions to fund that guarantee. After the guarantee period ends (typically 3-5 years), real yields may fall materially.
How does the monsoon season affect rental income?
The monsoon period (May - September) reduces occupancy to 25-45% and forces nightly rate cuts of 35-50%. These five months generate only 20-30% of annual rental revenue across both Phuket and Koh Samui.
What net yield can a villa in Phuket generate in 2026?
For a villa purchased at 12 million THB and managed by a professional external operator at a 25% commission, we estimate net yield at approximately 7-8% per year. This figure is pre-tax and excludes depreciation.
What is the difference in occupancy between Chaweng and Maenam on Koh Samui?
Chaweng posts higher nightly rates but faces strong competition from branded hotels, resulting in annual occupancy of 55-65%. Maenam offers lower rates but more stable occupancy of 50-60%, supported by longer-stay guests and a thinner competitive landscape.
Do rental income tax obligations differ by investor nationality?
Yes. Thailand's 2024 Royal Decree amendment changed how foreign-sourced income remitted to Thailand is taxed locally. Investors who are tax residents of countries holding a double-taxation treaty with Thailand may be able to credit Thai tax against their home-country liability, but the specifics depend on the treaty terms and individual circumstances. We recommend obtaining written tax advice in both jurisdictions before structuring any income repatriation.
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