What a Koh Samui villa really earns: rental income, honestly

What a Koh Samui villa earns depends on four things: the nights it books, its nightly rate against what it cost, what management takes, and wear. A single headline percentage hides all four. So we will not give you a number for a spreadsheet; we will show you what the number is made of.

We build villas on Koh Samui, and our rental team runs many of them. That means we see the gap between the yield people quote and the money an owner keeps.

This is general information, not financial, investment or tax advice. Rental income depends on the villa, the place and the year, and past results promise nothing. Model the numbers for your own property with an independent adviser.

The short answer

• A headline yield means little on its own. It rarely says whether costs are included, or how many weeks a year it assumes the villa is booked.
• Four things drive the real return. Bookings across the seasons, the nightly rate against the cost base, management, and wear.
• We do not quote a figure. A real one depends on your villa. Any general number we printed would be as hard to check as the ones you already doubt.
• We show dated evidence instead. Guest ratings, a villa fully booked in its first December, and villas that rent as a pair.
• This is about Koh Samui. Seasons, demand and costs here behave differently from Phuket, Bangkok or a holiday let in Europe.

Why a headline yield misleads

Two words do most of the damage.

Gross yield is a year's rental income divided by what the villa cost, before any costs come out. Net yield is what is left after the costs of earning that income: management, cleaning, utilities, repairs, empty weeks and tax.

The gap between the two is where marketing figures hide. It is the net that pays you.

Then there is occupancy, the share of nights that actually get booked. A yield that assumes the villa books most of the year is very different from one built on a real island season. Change that assumption by a few weeks and the whole figure moves.

So a number quoted without saying which yield it is, what costs it includes and what bookings it assumes is not information. The useful question is not "what's the yield?" It is "what is this number made of?"

What really drives the return

Bookings, and the seasons

A Koh Samui villa does not book evenly through the year. The high season and the wetter, quieter months are almost different businesses. A villa's real income is the sum of both, not an average taken from the good weeks.

Location matters too. A quiet villa a short walk from a beach attracts different guests, on a different calendar, from one on a busy strip. Read our area-by-area guide to Koh Samui before judging any villa by its photos.

We will not publish an occupancy rate we cannot stand behind. What we can show is demand. Our one-bedroom Villa Palm Beach in Laem Sor was fully booked for December 2024, its first high season.

That is one month at one villa, posted by us and not audited. Take it as a sign the demand is real, not as a yearly figure.

Nightly rate against the cost base

Two villas can charge the same rate and earn very differently. The rate only matters against what the villa cost to build or buy, and what it costs to run.

A well-built villa that keeps its finish and its rating can hold its rate for longer. A cheaply finished one cuts prices to fill the calendar and then spends the difference on repairs. Because we built these villas and also see the repair bills, the cost base is a record for us, not a guess.

Management, and what it takes

Someone has to answer enquiries, set prices, meet guests, clean between stays, fix the pool pump and handle reviews. That is either a management company's fee or your own time. Either way, it comes out of the gross before anything reaches you.

A holiday villa is a small hospitality business. Management is usually the biggest reason a strong gross becomes an ordinary net. Our rental team, ATS Luxury Stays, runs our villas and our hotel, South Beach Inn on Thong Krut Beach, which opened in March 2025.

So we carry the running costs ourselves rather than estimate them. If you want help with your own villa, see holiday-let property management on Koh Samui.

Furnishing, wear and refresh

Guests are hard on a house. Sun, salt, pool chemicals and back-to-back stays age a rental faster than a home. A villa that wants to keep its rate needs a planned refresh as well as repairs when something breaks.

That refresh is a real cost of the income. It almost never appears in a headline yield. Budget for it and your net is honest.

What we can show you instead of a number

We would rather give you dated evidence you can check than a figure you would be right to doubt.

On Instagram: See this on Instagram

Guest ratings. Our villas on one road in Laem Sor, Taling Ngam, were built or rebuilt by us and are run by ATS Luxury Stays. Their Airbnb ratings, as of July 2026:

• Villa Malibu: within the same 4.7 to 4.9 range
• Villa South Beach: 4.89 from 47 reviews
• Villa Miami: 4.85 from 27 reviews
• Villa Palm Beach: 4.77 from 52 reviews
• Villa Laguna Beach: 4.75 from 20 reviews

Ratings are not returns. But a villa that keeps a rating like these can keep its rate and its repeat guests. That comes before everything a yield tries to measure.

Villas that rent as a pair. Villa Malibu and Villa Miami sit side by side, and we market them together to bigger parties. Two houses next door can book in ways neither would alone. A single-villa yield cannot show that.

A longer record abroad. Villa Picasso Tulum in Mexico was completed in July 2023. By our own account, it earned rental income every month for its first two years.

That is our statement, not an audited one. But it is a villa that has earned through real seasons, not a forecast for one that does not exist yet.

A name check. Villa South Beach is a rental villa in Laem Sor. It is not South Beach Inn, our hotel in Thong Krut, and not South Beach Resort and Beach Club, the resort we are building across the road from the inn.

What comes off the gross

Each of these sits between a gross figure and what you keep. Each is easy to leave out of a headline number.

• Management and booking fees: projections often assume you manage for free. You will not, and your time has a cost.
• Cleaning and guest turnover: this rises with bookings. The busier the villa, the bigger this line.
• Utilities, pool and garden: island running costs continue whether the villa is booked or not.
• Repairs and a refresh fund: the slow cost of wear, often skipped in forecasts.
• Empty weeks: the gap between the assumed calendar and the real one.
• Tax and paperwork: local rules apply to rental income. Take advice.

We have left the numbers out on purpose. Put your villa's real figures against each line and you will have a net you can trust.

Why the builder sees the real costs

An agent is paid when you buy and moves on. A builder is paid at handover and moves on. Neither lives with the villa's running costs afterwards, so neither pays for a wrong yield.

We build, and our rental team runs much of what we build. So the repair bill, the quiet week and the refurbishment all land on us. That gives us a reason to describe them honestly.

The same logic should guide who you buy or build with. We explain it in how to buy or build property in Koh Samui as a foreigner and in how to check a developer before buying off-plan, before the building is finished.

Questions people ask

What rental yield can I expect on a Koh Samui villa?

There is no single honest answer. Anyone quoting a firm figure without seeing your villa, its location, its costs and its real bookings is guessing. Focus on the net, after management, running costs, wear and empty weeks, and model it with an independent adviser.

What is the difference between gross and net yield?

Gross yield is a year's rental income divided by the villa's cost, before expenses. Net yield is what remains after management, cleaning, utilities, repairs, empty weeks and tax. The net is what pays you.

Why won't you just quote a yield?

Because a real figure depends on your villa. A general number would be as hard to check as the ones already in the market. We show dated evidence instead: guest ratings, booking signs and a villa with two years of monthly income.

Does location change what a villa earns?

Yes, a lot. Bookings, rates and the type of guest all change with the area. A figure with no location attached is missing one of its biggest inputs.

Can foreigners earn rental income from a villa here?

Yes. Many foreign-owned villas on Koh Samui are let to holiday guests, usually through a management company.

Get the ownership structure and the tax steps right first. Start with can foreigners own property in Thailand, and take local tax advice.

Talk to people who run villas

If you are weighing a Koh Samui villa as an investment, we can work through the real costs with you. We use the costs we carry on our own villas, for a villa we have built or would build.

Talk to us about investing. Bring your own adviser. We would rather you did.