Chiang Mai old city — where the real tourist tax is paid in unpriced cost layers
The Cost Layer Brochures Skip

If you’re researching Thailand’s tourist or property-buyer taxes, here’s the cost layer most brochures skip.

Where tourist tax applies — The geography, mapped. Brinkman Data SEO brand card.

A foreign property buyer faces four cost layers, not one. Transfer fee. Specific Business Tax. Withholding tax on rental income. CAM. The 300 THB tourist fee is a separate, low-stakes line aimed at short-term visitors. Below: each layer at its current published rate, plus where the brochures usually quietly leave them out.

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Independent research · Not legal or tax advice · Rates subject to current schedule

Layer 1 of the math

The four cost layers a foreign property buyer faces.

Each rate below is approximate and subject to the current Land Department / Revenue Department schedule. Verify with a licensed Thai tax professional before deposit.

1 · Transfer Fee

~2%

Charged on the registered (assessed) value at the Land Department on transfer day. Customarily split between buyer and seller, though the split is negotiable — the brochures rarely mention that. The investment mistakes the tourist-priced deal makes.

Negotiable line item

2 · Specific Business Tax

~3.3%

Applies when the seller has held the unit for under five years. If the holding period is over five years, this generally drops out and stamp duty of approximately 0.5% applies instead. Always paid by the seller in principle — in practice, it gets priced into your number.

Seller line, your problem

3 · Withholding On Rental Income

Progressive

Rental income earned by a foreign owner is subject to Thai personal income tax on the net — gross rent minus allowable deductions, including a standard deduction on residential rent. Brackets are progressive. The number that matters is post-deduction, not the headline rate.

Net basis · consult a Thai accountant

4 · CAM (Common Area Maintenance)

Per m²/yr

Not a tax. The single biggest hidden recurring cost on a foreign-quota condo. Charged monthly or annually by the juristic person of the building, plus periodic sinking-fund top-ups. Brochures call it “low”. The actual schedule is what you should ask for.

Recurring · not in the sticker price

See how all four layers compound →

A common mix-up

The 300 THB tourist fee is not the same conversation.

If you searched “Thailand tourist tax” and landed here, you might be after the proposed 300 THB fee for short-term visitors arriving by air. That is a tourism levy aimed at short-stay travellers — on the order of a meal — and is essentially irrelevant to anyone underwriting a condominium. See the due-diligence sequence in full.

For a property investor it is rounding error. The decisions that actually move your net yield are the four layers above plus the costs around them: commission load, stale listings, top-of-range rent comps, and a CAM history nobody asked for. That is the “tourist tax” that matters — the premium a foreigner pays by default for not pricing the cost stack. See the full tax stack for foreign buyers.

If you are buying a unit, your concern is the next four sections, not the 300 THB. If you are visiting, you can stop reading here.

Investor route — the math underneath the brochure.

See a sample underwriting →

The Math

Why “6% gross” routinely becomes 2-3% net once the layers compound.

A worked example on a typical 2.5M THB foreign-quota condo. Numbers are illustrative, rounded, and expressed in approximate Thai property practice.

brochure_yield.tsx · net_after_costs

Brochure gross yield: ~6%
Real signed-lease comp adjustment: −1.5 to −2.5 pts
CAM & sinking-fund (annualised): −0.5 to −1 pt
Withholding on net rental income: −0.3 to −0.7 pt
Vacancy & turnover (real-world): −0.2 to −0.5 pt
Net cash yield, typical: ~2-3%
Chiang Mai acquisition actual: documented in the case study →

The critique here is not aimed at the Thai tax schedule. The schedule is what it is, and a licensed Thai accountant can run it. The critique is aimed at the marketing layer that hides the cost structure globally — the brochures, the off-plan developer pitches, the lifestyle posts — and at the Western financial system that conditioned a generation to confuse a 30-year mortgage with an investment. Same critique, neutral geography.

The fix is not to argue with the schedule. It is to price every layer in before the deposit is wired, and to walk away from any unit that can’t survive the math once it is.

See the unit that survived the four layers →

The Framework

The framework that prices the cost stack correctly.

/anomaly · Campaign LP

The 5-step protocol that filters 1,000 listings down to one.

One sentence: the framework rejects every listing that can’t survive a transparent cost stack — transfer fee, business tax, withholding, CAM — before deposit.

Read the protocol page →

/sample-report · Methodology

A sample underwriting with every cost line on the page.

One sentence: the sample report shows a Chiang Mai unit run through the same filters — transfer split, CAM history, rent-comp triangulation, net yield after withholding — in the format you’d get on the $499 custom report.

Open the sample →

The Offer

Two ways to use the framework.

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The Thailand Underwriting Protocol

The exact 5-step framework I used to underwrite the Chiang Mai acquisition. Apply it to any Thai listing in 30 minutes.

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What buyers are saying

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“I used to spend a lot of time driving around Chiang Mai, scrolling real estate websites and visiting agents. This document convinced me to go further with Brinkman Data Analytics. It will save me a lot of time.”

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Capital Allocator. Not Tourist.

Price the four layers in. Then buy.

The $20 Protocol is the same framework that found the Chiang Mai acquisition. Transfer split, CAM history, rent-comp triangulation, withholding net — in one PDF. 7-day refund. No upsells.

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⚠ Disclaimer

Brinkman Data Analytics is an independent research service. Not financial, investment, tax, or legal advice. All tax rates referenced on this page are approximate and subject to the current Land Department / Revenue Department schedule. Always consult a licensed Thai tax professional before transacting.

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