Understanding Rental Yields in Bangkok: Gross, Net and the Numbers That Lie

Gross yield: the honest starting point

Gross rental yield is annual rent divided by total purchase cost. Two disciplines make the number honest. First, use realistic rent — what comparable units in the same building or adjacent buildings actually achieve, not the brochure's projection. Second, use your true all-in cost: purchase price plus transfer-day fees plus furnishing, since an unfurnished number flatters the result.

Mainstream Bangkok condos have typically produced gross yields in the low-to-mid single digits — commonly cited around 4–6% — with higher figures achievable in lower-priced, transit-connected areas and lower figures typical in luxury segments, where owners rely more on capital appreciation.

From gross to net: what actually comes out

Net yield subtracts the recurring costs of ownership, and in Bangkok the list is specific and predictable. The common-area fee is the big one, and it accrues whether the unit is let or empty. Then vacancy: even a well-located unit turns over, and one vacant month per year cuts income by over 8%. Then the letting agent's commission — customarily one month's rent per one-year contract — plus small repairs, insurance and the (minor) land and building tax. Rental income is also taxable.

Run honestly, a Bangkok condo's net yield typically lands one to two percentage points below its gross. That is not a flaw of the market — it is roughly what honest math does everywhere — but it is the number that should drive your decision.

• ✓Common fees: the largest recurring drag, vacancy-proof in the wrong direction
• ✓Vacancy: budget at least one month per year for turnover
• ✓Agent commission: ~1 month's rent per new 1-year tenancy
• ✓Repairs, insurance, taxes: individually small, collectively real

Reading "guaranteed yield" offers

Some projects market guaranteed rental returns — say, a fixed percentage for the first two or three years. Understand what these are: the guarantee is priced into what you pay, and it tells you nothing about the unit's market rent after the guarantee ends. The critical question for any guaranteed-yield offer is what the achievable market rent will be in year four. If the honest answer is far below the guaranteed rate, the guarantee is a discount being returned to you slowly — while you carry the market risk at the cliff.

Why off-plan buyers have a yield advantage

Yield is fixed at purchase: every baht saved on entry price is yield gained forever. Off-plan launch pricing therefore translates directly into structurally higher yields on the same rental income — one of the quieter but most durable arguments for buying early in the sales cycle, provided the project passes the safety checks that off-plan requires.

Sanity-check with data, not hope

Every BaanScope project page shows an AI-estimated rental yield alongside pricing, computed consistently across all tracked projects — useful precisely because it is calculated the same way everywhere, so projects and districts can be compared like-for-like before you go deeper on any of them.

Frequently asked questions

What is a good rental yield in Bangkok?

Mainstream Bangkok condos commonly achieve gross yields around 4–6%, with net yields typically one to two points lower after common fees, vacancy and agent costs. Lower-priced transit-connected units tend toward the higher end; luxury units toward the lower end.

Are guaranteed rental returns in Thailand legitimate?

They are real contracts, but the guarantee is financed by the price you pay and expires after a fixed period. Judge any guaranteed-yield offer by the realistic market rent after the guarantee ends, not by the headline rate.

How do I estimate rent for an off-plan unit that doesn't exist yet?

Use current asking and achieved rents for similar-sized units in completed buildings nearby of comparable quality, then be conservative — your building will add new supply to the same pool when it completes.