The average guaranteed return offer on Phuket in 2026 sits at 5-7% per year for a 3-5 year term. On the surface, that reads as predictable income. After reviewing several dozen contracts in our monitoring dataset going back to 2023, however, we consistently observe the same pattern: the unit sold with a guarantee is priced 15-30% above a comparable unit without one, and once the program expires, actual occupancy rarely sustains the promised income level.
In this article, our analysts break down three rental management models available to property buyers on Phuket and Koh Samui - guaranteed rent, independent management via a third-party operator, and rental pool within a licensed condotel - using market-specific figures as of 2026. We show where developers embed their margin, when short-term rental is legally permissible, and how seasonality shifts the calculation depending on the district.
Quick answer
- Guaranteed returns of 5-7% annually on Phuket are most commonly funded through the purchase price: based on our estimates, the markup runs 15-30% above the market value of a comparable unit without the guarantee program
- The standard management commission charged by third-party short-term rental operators in Bang Tao and Kamala is 20-30% of gross revenue, as of 2026
- Rental pool structures in licensed condotels allocate 40-50% of total gross revenue to the operator before owners receive their share
- Legal daily rentals require a hotel licence under the Hotel Act (B.E. 2547); without one, the minimum rental period is 30 days
- The high season (November through March) generates 60-70% of annual rental income on Phuket's west coast
- On Koh Samui, low-season occupancy (May through October) drops to 25-35% in Lamai and Chaweng, while Bophut holds 35-45% due to longer-stay tenants
Options and scenarios
Model 1: Guaranteed rent - how developers finance the promise
A developer offering a 6% annual guarantee over five years must set aside the equivalent of 30% of the purchase price to fund those payments. In our monitoring, we see two primary funding mechanisms.
The first is a price markup on the unit itself. If a comparable 45 sq m apartment in Bang Tao sells for 5.5 million THB without any guarantee program, the same unit packaged with a guaranteed return typically enters the market at 6.8-7.2 million THB. The difference of 1.3-1.7 million THB effectively pre-funds the guarantee payouts over the contract period.
The second mechanism involves the developer genuinely renting the unit and topping up any shortfall from their own development margin.
For buyers focused on net outcome: the 1.5 million THB markup is capital paid upfront for a benefit that is, in reality, not free. Once the contract expires, the owner holds an asset whose realistic market value corresponds to 5.5 million THB, not the 7 million THB they paid. That gap is the primary hidden cost our analysts flag in this model.
Model 2: Third-party short-term rental operator
Engaging an independent operator directly provides full cost transparency. We monitor fee structures across operators active in Kamala, Surin, Layan, and Rawai. The typical 2026 cost structure breaks down as follows:
- Operator commission: 20-25% of gross revenue (some apply 30% in low season, 20% in high season)
- OTA commissions (Airbnb, Booking.com, Agoda): 3-15% of gross revenue, depending on platform and model (Airbnb charges approximately 3% from the host plus up to 14% from the guest; Booking.com charges 15-18% from the host)
- Cleaning: 500-1,200 THB per turnover, depending on unit size
- Minor repairs and maintenance: 25,000-50,000 THB per year, based on our estimates for a 45-60 sq m unit
- Utilities (electricity, water, internet): 3,000-6,000 THB per month at occupancy rates above 60%
Model 3: Rental pool in a condotel
Rental pool structures aggregate rental income across all units in the building and distribute it proportionally, usually by floor area or ownership share. The hotel management operator retains 40-50% of total gross revenue. Owners receive their proportional share of the remaining 50-60%, with no control over nightly rates or occupancy targets. Based on reports we analyse, licensed condotel owners on Phuket's west coast net approximately 4-6% of unit value annually in strong years, falling to 2-3% in weaker periods.
Full cost calculation: Bang Tao apartment, third-party operator model
Our working example uses a 50 sq m unit with a market value of 5.5 million THB, a high-season nightly rate of 3,500 THB, and a low-season rate of 2,000 THB. Annual occupancy is set at 65% (85% high season, 45% low season).
- Gross annual revenue: approximately 237 nights x average rate of 2,800 THB = 663,600 THB
- Operator commission (25%): -165,900 THB
- OTA commissions (average 12%): -79,632 THB
- Cleaning (approximately 70 turnovers x 800 THB): -56,000 THB
- Utilities (12 x 4,500 THB): -54,000 THB
- Repairs and maintenance: -35,000 THB
- Common Area Maintenance (CAM): -36,000 THB (600 THB per sq m per year)
- Insurance: -8,000 THB
- Total costs: -434,532 THB
- Net to owner: 229,068 THB
- Net yield: 4.2% of property value
This is a grounded scenario, not a marketing projection. Compare it with the guaranteed rent model: at 6% applied to an inflated purchase price of 7 million THB, the owner receives 420,000 THB annually - nominally higher. However, the buyer paid a 1.5 million THB premium upfront. Over five years, the cumulative guarantee payouts total 2,100,000 THB; subtract the 1,500,000 THB premium, and the real advantage over the open-market model narrows to 600,000 THB. Against that, the owner surrenders operational control and carries the risk of a value reduction once the program ends.
Hotel licence: the hard regulatory boundary
Thailand's Hotel Act (B.E. 2547, amended B.E. 2551) classifies the rental of accommodation for periods shorter than 30 days as hotel business activity. Operating without a hotel licence is an offence carrying fines of up to 20,000 THB, plus 10,000 THB for each day the violation continues.
In practical terms:
- A condotel holding a valid hotel licence (or.or. 4) can legally rotate guests on a nightly basis - this is the prerequisite for both rental pool and guaranteed return programs built on short-term rental
- A standard condominium unit without a hotel licence may only be legally rented for a minimum of 30 consecutive days
- Landed properties (villas) on leasehold land are subject to the same framework; without a hotel licence, stays of fewer than 30 days carry regulatory risk
Our team monitors enforcement activity on Phuket. During 2024 and into 2025, provincial authorities conducted multiple inspections concentrated in Rawai, Nai Harn, and Chalong. Several properties received cessation orders. The regulatory direction is clear: enforcement is tightening, not relaxing.
For any buyer planning a short-term rental model, verifying the building's hotel licence status before signing a purchase agreement is non-negotiable. Without one, anticipated short-term revenue may need to be replaced entirely with monthly rental rates, reducing gross income substantially.
Seasonality by district
Seasonality is the variable that most dramatically reshapes rental economics, and its impact differs significantly by location.
Phuket west coast (Bang Tao, Layan, Surin, Kamala):
- High season (November-March): 80-90% occupancy; nightly rates of 3,000-5,000 THB for a 45-60 sq m unit
- Shoulder months (April, October): 55-65%
- Low season (May-September): 35-50%; rates decline 30-40%
- Annual average occupancy: 60-70%
Phuket south coast (Rawai, Nai Harn, Karon):
- High season: 70-80% (rates slightly below the west coast, but demand is stable)
- Low season: 25-40%
- Annual average occupancy: 50-60%
Koh Samui - Chaweng and Lamai:
- High season (December-March): 75-85%
- Low season (May-October): 25-35%; the southwestern monsoon affects the island's east-facing coastline significantly
- Annual average occupancy: 45-55%
Koh Samui - Bophut and Maenam:
- High season: 70-80%
- Low season: 35-45%; higher retention than Chaweng due to digital nomads and monthly tenants
- Annual average occupancy: 50-60%
The pattern our data shows is consistent: districts with genuine residential infrastructure (dining, coworking, schools, medical facilities) hold occupancy better through the low season than purely tourist-oriented beach locations.
Comparison table
| Parameter | Guaranteed rent | Third-party operator | Rental pool (condotel) |
|---|---|---|---|
| Operator fee structure | Embedded in purchase price | 20-30% of gross revenue | 40-50% of gross revenue |
| Purchase price premium | 15-30% above market | None | 0-10% (hotel brand premium) |
| Owner control over nightly rate | None | Full or negotiated | None |
| Hotel licence required | Yes (provided by developer) | Yes (for sub-30-day stays) | Yes (provided by operator) |
| Net yield (our estimates) | 4-5% of real market value | 3.5-5.5% of purchase price | 2-6% of purchase price |
| Post-contract risk | High - unit value likely overstated | Not applicable - continuous model | Medium - operator change risk |
| Personal use of unit | Restricted (14-30 days per year) | Flexible | Restricted (14-60 days per year) |
| Cost transparency | Low | High | Medium |
Risks and mistakes
- Failure to establish the market price without the guarantee. The most frequent error we observe is comparing the guaranteed yield percentage against the inflated purchase price, rather than against the standalone market value of a comparable unit. Our analysts always cross-check transaction prices for similar units in the same building or immediate vicinity before drawing any yield conclusions.
- Ignoring OTA commissions. Platform fees ranging from 3-18% of gross revenue are routinely omitted from developer-prepared income projections. Our team includes them in every calculation.
- No plan for the post-guarantee period. When a 3-5 year program expires, the owner must independently arrange rentals or sell. The complication is that dozens of owners in the same building often face this simultaneously, creating downward pressure on both rental rates and resale prices.
- Buying into a building without a hotel licence for short-term rental. Purchasing a unit with the intent to rent nightly in a building that lacks the required licence can eliminate 40-60% of projected gross income, with the remaining income capped by monthly rental rates.
- Currency exposure. Investors whose home currency is not the Thai baht carry exchange rate risk. Over the past five years, the THB has shown volatility of approximately 15-20% against major currencies, which can materially affect repatriated returns.
- Thai income tax on rental revenue. Rental income earned in Thailand is subject to Thai personal income tax at progressive rates up to 35%. Buyers who are tax residents elsewhere should verify the applicable double taxation agreement with Thailand and account for the crediting method applied, as it affects their net after-tax return.
FAQ
Is guaranteed rent on Phuket a real yield or a hidden markup?
In the majority of cases in our dataset, guaranteed rent is funded through a markup on the purchase price rather than from genuine rental outperformance. Net yield calculated against the real market value of the unit (excluding the guarantee premium) typically falls in the 4-5% range annually, which is comparable to results achievable with a third-party operator. The guarantee delivers cash-flow predictability, but it does not create additional value.
What does a third-party rental operator charge on Phuket in 2026?
Typical operator commissions in Bang Tao, Kamala, and Surin run 20-25% of gross revenue. On top of that, OTA platform commissions add 3-18%, cleaning costs 500-1,200 THB per guest turnover, and utilities plus maintenance consume a further portion. In aggregate, operating costs absorb approximately 55-70% of gross rental revenue.
Can I legally rent a Phuket apartment on a nightly basis?
Only if the building holds a valid hotel licence under the Hotel Act (B.E. 2547). Without that licence, the legally permissible minimum rental period is 30 consecutive days. Enforcement activity in Phuket intensified through 2024 and 2025, with inspections concentrated in Rawai, Nai Harn, and Chalong.
What occupancy levels should buyers assume for Phuket and Koh Samui?
Based on our 2026 estimates, annual average occupancy for apartment units on Phuket's west coast (Bang Tao, Layan, Surin) runs 60-70%. On Koh Samui, Chaweng and Lamai average 45-55%, while Bophut and Maenam hold 50-60% annually.
How does seasonality affect rental income on Phuket?
The high season from November through March generates 60-70% of annual rental revenue on the west coast. In the low season (May-September), nightly rates drop 30-40% and occupancy falls to 35-50% depending on the district. Buyers who underestimate low-season softness frequently find their annual income projections overstated.
Is a rental pool in a condotel a suitable model for a passive investor?
Rental pool is the most hands-off structure available - owners make no operational decisions. The trade-off is a high operator take (40-50% of gross revenue) and zero influence over pricing or marketing. Net returns to the owner range from 2-6% annually per our estimates, with a wide spread driven by operator quality and location.
What taxes apply to rental income from a Thai property?
Rental income generated in Thailand is subject to Thai personal income tax at progressive rates up to 35%. Buyers who are tax residents in countries with a double taxation agreement with Thailand should review the applicable crediting method, as it determines how much Thai tax can be offset against their home-country liability. We recommend independent tax advice specific to the buyer's jurisdiction.
What is the CAM fee and what does it cover?
Common Area Maintenance (CAM) fees on Phuket typically run 40-80 THB per sq m per month (equivalent to 480-960 THB per sq m per year). They cover pool maintenance, security, common-area cleaning, lift operation, and landscaping. For a 50 sq m unit, the annual CAM obligation falls in the 24,000-48,000 THB range.
Are guaranteed rent programs worth considering on Koh Samui?
Guaranteed rent programs are less prevalent on Koh Samui than on Phuket, and the rates offered are generally lower (4-6% per year). The island's lower average annual occupancy (45-60%) means that once a guarantee expires, actual rental income may fall materially short of the program rate. Our analysts treat Koh Samui guarantees with additional caution relative to Phuket's west coast comparables.
What is the most transparent rental model for an international buyer?
Based on data we have been collecting since 2023, the third-party operator model delivers the highest cost transparency and comparable net yields to the guaranteed rent model, typically at a lower entry cost. The key inputs for a reliable calculation are: establishing the unit's standalone market price (without any guarantee premium), confirming the building's hotel licence status, and applying conservative occupancy assumptions of 55-65% for Phuket and 45-55% for Koh Samui.
Researching property in Phuket or Koh Samui? Get in touch - our analysts will prepare a data brief for your shortlisted location.