How to Calculate Property Yield in Thailand Without Fooling Yourself
When people look at investment property in Thailand, they usually fall for the first nice number they see: “up to 10%”, “guaranteed rental”, or a quick rent × 12 calculation that looks great on paper.
That’s exactly where self-deception tends to start.
The issue isn’t that yield is impossible to calculate. The issue is that it’s often calculated in a way that sells well, but doesn’t hold up when you actually own the unit.
1) Gross yield is only a quick draft
Gross yield = annual rent / purchase price × 100%
It’s a useful first filter, but it ignores everything that matters in real life: costs, vacancy, management, repairs, and the real entry budget.
2) Net yield is the number that matters
Net yield = (annual rent − all annual costs) / total invested capital × 100%
Once you subtract vacancy, management, building fees, minor repairs, furniture refresh, utilities (if owner-paid), taxes, banking costs, and tenant placement, the “headline yield” usually drops fast.
3) The most common mistake: using the wrong base number
People divide by the unit price only. But your real base is total invested capital:
transfer costs, legal fees, bank fees, furniture, appliances, one-off building payments, and setup costs.
If you invested more than the sticker price (and you almost always do), your true yield is lower.
4) Don’t model 12 perfect rental months
Even strong units can sit empty between tenants. Seasons change. Demand moves. A realistic model includes vacancy.
5) Short-term rental looks better on paper, harder in real life
Yes, revenue can be higher — but so are management, cleaning, turnover, marketing, wear and tear, and operational stress. Compare short-term vs long-term by net cash left, not by gross revenue.
6) If it’s not all cash, track what your own cash is earning
If you buy with installments or financing, overall ROI doesn’t tell the full story. It helps to track how much net cash flow your actual cash investment is generating.
7) Don’t mix rental yield and price growth into one “magic number”
Rental income is one story. Price appreciation is another. Until you sell, appreciation is a scenario, not money in your pocket. Keep them separate.
8) A simple no-illusion framework
Use true entry cost, realistic rent, vacancy, all operating costs, and building fees. Then compare gross vs net yield, and also your return on your actual cash invested if the deal isn’t fully cash-funded.
Quick example
A unit that looks like 7%+ on gross can easily become ~4% net once you include real entry costs, vacancy, and operating expenses. That gap is where most disappointment comes from.
Final thought
A pretty yield number is easy to create. A useful one only appears when you stop giving yourself — and the seller — easy assumptions.
