Withholding Tax in Thailand: 7 Transaction Costs Every Property Investor Must Know in 2026

Buying a condominium in Bangkok for 5,000,000 THB and expecting the contract price to be your only cost? In practice, the Thai Revenue Department will levy up to four separate charges on that single transaction before you receive the keys. Then your home country tax authority will ask about rental income. Below is a precise breakdown of every fee and tax involved.

Thailand operates a withholding tax (WHT) system applied at the point of title transfer registration at the Land Department. This obligation applies to both residents and foreign buyers. The applicable rate depends on whether the seller is an individual or a corporate entity, and on how long the property has been held. Understanding this mechanism is essential for any international investor planning to buy or sell property in Thailand in 2026.

Quick answer

• Withholding tax on a property sale by an individual is calculated using a progressive personal income tax (PIT) scale applied to an estimated net income; for corporate sellers, the rate is 1% of the sale price (or the official assessed value, whichever is higher)
• Transfer fee is standardly 2% of the official assessed value, conventionally split 50/50 between buyer and seller
• Specific Business Tax (SBT) is 3.3% and applies when the property is sold within 5 years of acquisition; if SBT does not apply, a stamp duty of 0.5% is levied instead (never both simultaneously)
• Rental income from Thai property is subject to progressive PIT at rates of 0-35%, and must also be declared in the investor's home country under applicable double taxation treaty rules
• In Cambodia, the property transfer tax is 4% of market value; the annual property tax is 0.1% on value exceeding 100 million KHR
• Thailand has a double taxation agreement (DTA) with most major investor countries including the UK, Australia, and EU members; Cambodia does not have a comprehensive DTA network - verify your country's treaty status before investing

Options and scenarios

Scenario 1: Buying a new condominium from a developer in Thailand

An investor purchases a Bangkok condominium for 5,000,000 THB. The seller is a corporate developer. Costs at the Land Department registration:

• Transfer fee: 2% of official assessed value, approximately 100,000 THB. In practice, developer and buyer split this equally, so the buyer pays approximately 50,000 THB
• Withholding tax: 1% of the sale price = 50,000 THB. This is the seller's (developer's) liability. The amount is deducted at the Land Department and remitted directly to the Revenue Department
• Specific Business Tax: 3.3% = 165,000 THB. This falls on the developer as an entity engaged in property trading
• Stamp duty: not applicable when SBT is charged

For the buyer, the effective transaction cost is approximately 50,000 THB (roughly 1%), provided the developer has not contractually shifted SBT liability to the buyer.

Scenario 2: Reselling a condominium after 3 years as an individual

The same investor sells the property after 3 years for 6,000,000 THB. As an individual who has held the property for fewer than 5 years:

• Transfer fee: 2% of assessed value, approximately 120,000 THB (split equally)
• Withholding tax: calculated using the progressive PIT scale on an estimated net income. The Land Department allows a standard cost deduction based on years of ownership (60% deduction for 3 years held, leaving 40% as taxable base). The tax is then computed progressively and divided by the number of years held. Indicative amount: 60,000-90,000 THB
• Specific Business Tax: 3.3% = 198,000 THB (sale within 5 years of acquisition)
• Stamp duty: not applicable (SBT takes precedence)

Scenario 3: Buying a condominium in Phnom Penh, Cambodia

An investor purchases a condo for 120,000 USD in Phnom Penh:

• Property transfer tax: 4% of market value = 4,800 USD. Conventionally paid by the buyer
• Annual property tax: 0.1% on value exceeding the threshold of 100 million KHR (approximately 25,000 USD). On a 120,000 USD property, the taxable base is approximately 95,000 USD, resulting in an annual tax of approximately 95 USD
• Registration and notarial fees: approximately 200-500 USD

Cambodia does not have a direct equivalent of the Thai withholding tax at point of sale. A capital gains tax of 20% on profit has been formally enacted, but its enforcement in 2026 remains subject to ongoing regulatory interpretation. Consult a local tax adviser before transacting.

Scenario 4: Rental income and home country tax obligations

An investor rents out a Bangkok condominium for 25,000 THB per month. Annual gross rental income: 300,000 THB.

• Thailand: if the tenant is a registered company, it is required to withhold 5% WHT from each rental payment and remit it to the Revenue Department. The landlord then files an annual PIT return, crediting the withheld tax. If the tenant is a private individual, no automatic withholding applies and the landlord must declare income directly
• Home country (DTA jurisdiction): most double taxation agreements with Thailand use the credit method - tax paid in Thailand can be offset against the home country tax liability up to the proportional amount attributable to the foreign income. Always verify the specific treaty provisions with a qualified tax adviser
• Cambodia - no DTA: investors from countries without a DTA with Cambodia (which includes most Western nations) face the risk of genuine double taxation. The rental withholding rate for non-residents in Cambodia is 10%. This cannot be automatically credited against home country tax. Verify what relief mechanisms your home tax authority may offer before committing to a Cambodian investment

Comparison table

Parameter	Thailand - new developer purchase	Thailand - individual resale (under 5 years)	Cambodia - condo purchase
Example price	5,000,000 THB	6,000,000 THB	120,000 USD
Transfer fee	2% (split equally)	2% (split equally)	4% (buyer pays)
Withholding tax at sale	1% (seller/developer)	Progressive PIT scale (seller)	No direct equivalent
Specific Business Tax	3.3% (seller)	3.3% (seller)	Not applicable
Stamp duty	Not charged (SBT applies)	Not charged (SBT applies)	Registration fee 200-500 USD
Annual property tax	0.02%-0.3% (Land and Building Tax)	0.02%-0.3%	0.1% above threshold
WHT on rental income	5% (withheld by corporate tenant)	5%	10% (non-resident)
DTA with major investor countries	Yes (credit method typical)	Yes	Generally no
Estimated buyer transaction cost	Approx. 1% of price	Approx. 1% + negotiation	Approx. 4-5% of price

Risks and mistakes

1. Ignoring the official assessed value. Withholding tax and transfer fee in Thailand are calculated on the Land Department's assessed value or the contract price, whichever is higher. The official assessment sometimes exceeds the agreed purchase price, increasing costs beyond initial projections.

2. Accepting unfavourable contract language. Developers in Bangkok and Pattaya occasionally include clauses requiring the buyer to cover 'all taxes and fees.' This is negotiable. Market convention is a 50/50 split on transfer fee. Review all contracts with a licensed Thai lawyer before signing.

3. Failing to declare foreign rental income at home. Tax residents in most countries are obligated to report worldwide income, including rental income from Thailand. Non-disclosure carries the risk of interest charges and penalties. Maintain documentation of all Thai tax payments for cross-border credit purposes.

4. Relying on outdated rates. Thailand periodically reduces transfer fees (for example, from 2% to 1% for properties below a certain value threshold) through economic stimulus measures. Always verify current Revenue Department regulations immediately before transacting.

5. Underestimating double taxation risk in Cambodia. Without a DTA, investors face the possibility of paying tax in both Cambodia and their home country on the same income. Commission a cross-border tax analysis from an international tax specialist before purchasing in Phnom Penh.

6. Double-counting SBT and stamp duty. These two charges are mutually exclusive. If SBT (3.3%) applies, stamp duty (0.5%) is not charged. Paying both would be an error. Confirm with the Land Department officer at registration.

7. Missing WHT obligations on private tenants. When a tenant is a private individual (not a company), no automatic withholding applies. The landlord must proactively file and pay income tax on rental receipts. This is a common oversight among first-time foreign landlords in Thailand.

FAQ

What is withholding tax on a property sale in Thailand?

Withholding tax is a levy collected by the Land Department at the moment of title transfer registration. For individual sellers, it is calculated using a progressive PIT scale applied to an estimated net income based on assessed value and years of ownership. For corporate sellers, the rate is a flat 1% of the higher of sale price or assessed value.

Who pays withholding tax in Thailand - the buyer or the seller?

Withholding tax is the seller's liability. It is deducted from the sale proceeds at the Land Department counter and remitted directly to the Revenue Department. Buyers do not pay WHT on acquisition, only on eventual resale.

How much is the transfer fee for a condo in Thailand in 2026?

The standard transfer fee is 2% of the Land Department's official assessed value. In practice, buyer and seller conventionally split this equally at 1% each, though the allocation is subject to negotiation and contractual agreement.

Does an international investor need to pay tax at home on rental income from Thailand?

Yes, in most jurisdictions. Tax residents are typically required to declare worldwide income. If your country has a DTA with Thailand, the credit method generally allows you to offset Thai tax paid against your domestic liability. Consult a tax adviser familiar with both Thai and your home country tax law.

What is the Specific Business Tax rate in Thailand?

Specific Business Tax is 3.3% (3% base tax plus a 0.1% municipal surcharge applied as 10% of the 3%, totalling 3.3%). It applies to property sales made within 5 years of acquisition and to sellers who operate as property traders.

How much is the property transfer tax in Cambodia?

The property transfer tax in Cambodia is 4% of the market value of the property. By convention, the buyer typically bears this cost at the time of title registration.

Does Cambodia have a double taxation agreement with Western countries?

Most Western countries, including major European nations, the United States, and Australia, do not have a comprehensive DTA with Cambodia. This creates a genuine risk of double taxation on both rental income and capital gains. Verify your specific country's position with a tax specialist before investing.

How is withholding tax calculated for an individual selling a condo in Thailand?

The Land Department takes the official assessed value, applies a standard cost deduction (a percentage that increases with years of ownership), divides the remaining net income by the number of years held, applies the progressive PIT rate to that annual figure, and then multiplies back by the number of years. The calculation is performed at the counter - the seller receives a printed summary at registration.

Can Specific Business Tax and stamp duty both be charged on the same transaction?

No. They are mutually exclusive. If a transaction is subject to SBT (3.3%), stamp duty (0.5%) is waived. Stamp duty only applies when SBT does not, typically on sales of property held for more than 5 years by individuals who are not commercial property dealers.

What are the annual property holding costs in Thailand?

Since 2020, Thailand's Land and Building Tax applies at rates ranging from 0.02% to 0.3% depending on use (residential, agricultural, or commercial). A 5,000,000 THB condominium used for commercial rental purposes would typically generate an annual tax liability of approximately 5,000-15,000 THB.

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