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Phuket Property ROI: Step-by-Step Formula With Real Examples (2026)
An investor buys a studio in Rawai for 4.2 million baht, hands it to a property management company, and receives 252,000 baht net at year-end. His ROI: 6%. His neighbour — same floor, same unit type — earns 3.8%. The difference is not the property. It is the calculation.
Most developer brochures across Phuket advertise 8–12% annual returns. That figure is gross yield — revenue before a single bill is paid. The number that actually lands in your account can be half that. The only metric worth trusting is net ROI: income after every cost has been deducted. This guide walks through the exact formulas, real expense benchmarks, and the mistakes that quietly drain investor returns.
Quick Answer
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Gross yield = Annual rental income ÷ Purchase price × 100%. Island-wide average: 6–8%
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Net yield = (Annual income − all expenses) ÷ Total purchase cost × 100%. Realistic range: 4–6.5%
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Operating costs consume 25–40% of gross income — management fees, utilities, taxes, maintenance, and vacancy
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Cash-on-cash ROI is the most honest metric for instalment or off-plan buyers: it measures return on capital actually deployed
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Total ROI adds capital appreciation to rental cash flow — the figure professional investors use when planning an exit
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Average payback period for a Phuket condo: 12–17 years on rental income alone; 8–12 years when capital gain is included
Scenarios and Options
Scenario 1 — Condo Studio Under Managed Pool Program
Purchase price: 4,500,000 baht. Developer-guaranteed program: 7% gross per year.
Gross income: 315,000 baht/year.
Expenses breakdown:
- Management company commission (30% of income): 94,500 baht
- Common area maintenance (CAM fee): 24,000 baht/year (approx. 2,000 baht/month)
- Property insurance: 5,000 baht
- Soft furnishing replacement and minor repairs: 15,000 baht
- Withholding tax on rental income (5%): 15,750 baht
Total expenses: 154,250 baht
Net income: 160,750 baht
Net ROI = 160,750 ÷ 4,500,000 × 100% = 3.57%
This is the typical outcome for guaranteed-return programs. The marketed 7% becomes 3.5–4% net. Investors who plan budgets around the headline figure are routinely disappointed.
Scenario 2 — Two-Bedroom Villa, Self-Managed Short-Term Rental
Purchase price: 12,000,000 baht. Average nightly rate: 5,500 baht. Occupancy: 65% (237 nights).
Gross income: 1,303,500 baht/year.
Expenses breakdown:
- Booking platform commissions (Airbnb, Booking.com): 45,000 baht
- Property manager, housekeeping, pool maintenance: 300,000 baht
- Electricity and water: 120,000 baht
- Repairs and depreciation reserve: 80,000 baht
- Marketing and photography: 30,000 baht
- Taxes and levies: 65,175 baht
- Insurance: 15,000 baht
Total expenses: 655,175 baht
Net income: 648,325 baht
Net ROI = 648,325 ÷ 12,000,000 × 100% = 5.4%
Higher yield than the managed condo — but with considerably more operational complexity, time commitment, and exposure to vacancy risk.
Scenario 3 — Total ROI Including Capital Appreciation
Same condo purchased for 4,500,000 baht in 2023. By 2026, market value has risen to 5,400,000 baht — consistent with CBRE Thailand data showing 6–9% annual price growth in key Phuket locations between 2023 and 2025.
- Net rental income over 3 years: 480,000 baht
- Capital gain: 900,000 baht
Total ROI = (480,000 + 900,000) ÷ 4,500,000 × 100% = 30.7% over 3 years, or approximately 10.2% per year
This is how institutional and experienced private investors think: cash flow plus capital appreciation, measured together.
ROI Metrics Comparison Table
| Metric | Formula | What It Measures | Best Used When |
|---|---|---|---|
| Gross Yield | Annual income ÷ purchase price × 100% | Revenue ceiling before expenses | Quick comparison across properties |
| Net Yield | (Income − expenses) ÷ purchase price × 100% | Actual cash flow after all costs | Evaluating a specific property |
| Cash-on-Cash ROI | Net income ÷ capital actually deployed × 100% | Return on your own money | Off-plan or instalment purchases |
| Total ROI | (Net income + capital gain) ÷ total cost × 100% | Full investment return | Exit planning and resale decisions |
| Cap Rate | Net operating income ÷ current market value × 100% | Market-relative yield | Cross-market comparisons |
Standard Operating Expense Benchmarks
| Expense Category | Condo | Villa |
|---|---|---|
| Management company fee | 20–30% of income | 15–25% of income |
| CAM / common area fee | 400–800 baht/m²/year | 3,000–8,000 baht/month |
| Utilities | 2,000–4,000 baht/month | 8,000–20,000 baht/month |
| Minor repairs and refurbishment | 15,000–30,000 baht/year | 50,000–100,000 baht/year |
| Income tax (withholding) | 5–15% progressive scale | 5–15% progressive scale |
| Insurance | 3,000–8,000 baht/year | 10,000–25,000 baht/year |
| Vacancy allowance | 15–30% of year | 25–40% of year |
Main Risks and Mistakes
1. Planning around gross yield. The single most common error. A developer quotes 8% — the investor writes that number into their financial model. After real expenses are deducted, the figure drops to 4–5%. Always convert to net before making any decisions.
2. Ignoring vacancy rate. Even during Phuket's high season (November through April), occupancy rarely reaches 100%. Build in 20–35% vacancy depending on property type and location. Beachfront Bang Tao will outperform inland Chalong — but neither runs full year-round.
3. Underestimating tropical wear. Air conditioning units last 3–5 years in a tropical climate. Soft furnishings last 2–4 years. Mattresses, curtains, appliances — all degrade faster than in temperate markets. Allocate a sinking fund of at least 1–2% of property value per year.
4. Treating a rental guarantee as permanent income. Guaranteed return programs at 7–10% typically run for 3–5 years. Once the guarantee period ends, the management company may reduce rates or exit the agreement entirely. Review exit conditions and the developer's track record before signing.
5. Forgetting resale taxes. Selling Thai property triggers: Specific Business Tax (3.3%) if held under 5 years, stamp duty (0.5%), and withholding tax calculated on a progressive scale based on assessed value. Combined, these costs can reach 5–8% of the sale price — a significant reduction to your capital gain.
6. Overlooking currency exposure. Rental income is denominated in baht. If your liabilities, lifestyle costs, or repatriation needs are in euros, US dollars, or another currency, exchange rate movements can shift your effective yield by ±2–3% per year. Factor this into total ROI projections.
FAQ
What is considered a good ROI for Phuket property?
Net yield of 5–7% is excellent. Any advertised figure above 7% net warrants scrutiny — either the property is genuinely undervalued, or the calculation omits key expenses. The realistic island-wide average sits at 4–5.5% net yield.
What is the difference between ROI and yield?
Yield measures the annual rental income stream relative to purchase price. ROI is the total return on the investment — including both rental income and any capital appreciation. Yield is one component of ROI.
How do I calculate ROI for an off-plan purchase paid in instalments?
Use cash-on-cash return. Example: you commit 1,500,000 baht as a 30% deposit on a 5,000,000 baht unit. The project completes in two years. First-year net rental income: 200,000 baht. Cash-on-cash ROI = 200,000 ÷ 1,500,000 × 100% = 13.3%. Important caveat: the remaining 70% of the purchase price is still owed and must be factored into full-investment ROI once paid.
Do I need an accountant to calculate ROI?
For preliminary scenario modelling — no. The formulas and benchmarks in this article are sufficient for independent analysis. For precise tax liability calculations at the point of resale, engaging a qualified Thai tax consultant is advisable.
How do I factor inflation into ROI?
Calculate real ROI by subtracting inflation from your nominal return. With Thailand's inflation running at approximately 1.5–2.5% (Bank of Thailand data) and a net yield of 5%, your real purchasing-power return is approximately 2.5–3.5% per year.
What payback period is realistic for a Phuket condo?
On rental income alone: 12–17 years, depending on district and management model. Including capital appreciation: 8–12 years. Any projection promising payback in 5–6 years on rental income alone requires rigorous independent verification.
Does location change the calculation methodology?
The formulas remain the same. The inputs change significantly. Bang Tao and Surin command higher nightly rates and occupancy — but also higher purchase prices. Rawai and Chalong offer lower entry costs but lower rental rates. Always run location-specific numbers rather than applying island-wide averages to a specific asset.
Where do I find reliable data for my calculations?
- Rental rates: Airbnb and Booking.com (filter by district and property type)
- Sale prices: DDProperty, FazWaz
- Occupancy data: AirDNA (subscription-based, but provides Phuket-specific historical occupancy rates)
- Capital appreciation benchmarks: Annual market reports from CBRE Thailand and Knight Frank Thailand
The core principle is straightforward: always calculate net yield and total ROI in parallel. Net yield tells you what you receive each month. Total ROI tells you what you earn when you sell. Use the expense table in this article as a due-diligence checklist — and no hidden cost will catch you off guard.
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