Rental Income Tax in Thailand for Foreign Property Owners

The bank account is not what determines the source of this income. Section 40(5) of Thailand’s Revenue Code covers rent from property, and Section 41 treats income from property situated in Thailand as Thai-source income even when the payment is made outside Thailand. An owner who has the rent remitted to Singapore, Europe or another country has not converted rent from a Thai condo into foreign-source income.

Tax residence is a separate layer. The Revenue Code treats a person who stays in Thailand for an aggregate of 180 days or more in a calendar year as a Thai tax resident. That status can affect other income, allowances and the way tax is collected, but it does not move the property. A Bangkok apartment or Phuket house continues to generate Thai-source income when its owner is non-resident.

This distinction matters most when money is actually paid. A resident individual receiving rent from a Thai juristic person can fall under the 5% rental withholding rule in Departmental Order Tor.Por. 4/2528. Section 50(3), by contrast, provides a 15% withholding rule for Section 40(5) and 40(6) income paid to a non-resident taxpayer. The payer and the recipient’s status therefore have to be identified before a withholding percentage means anything useful.

The analysis here is for an individual owner. Property held through a company belongs in a corporate-tax analysis, not in this personal-income-tax framework. It also deliberately avoids the broader foreign-income rules for Thai residents because they do not change the source character of rent earned from property physically located in Thailand.

For a house or building, Thai rules offer two different ways to deal with rental expenses before the tax base is calculated. Royal Decree No. 11 and the Revenue Department’s PND.90 guidance allow an owner to use a 30% standard expense deduction. It is not a 30% tax discount. It reduces the rental income taken forward into the personal income tax computation.

The standard method does not require the owner to produce receipts showing that exactly 30% of the rent was spent. The actual-expense method works differently: the owner reports the real expenses connected with the letting and must be able to substantiate them. Documentation matters, but so does the legal character of the cost. A payment can be real and still fail to qualify as a deductible rental expense in the way the owner expects.

That is why management fees, repairs, financing costs, common-area charges or furnishing costs should not be treated as automatically deductible simply because they appear in the property’s cash-flow statement. The correct treatment depends on the nature of each item and the supporting records. Owners using actual expenses need accounting evidence that can survive a tax review, not just a spreadsheet of money spent.

A simple comparison of percentages can therefore be misleading. Actual outgoings above 30% do not automatically make the actual-expense route better if some of those costs are not deductible or cannot be proved. The standard method trades precision for simplicity; the actual method can reflect the owner’s economics more closely, but only for expenses that the rules permit and the documents support.

Subletting is a separate case. The official filing guidance distinguishes a property owner from a person who rents property and then sublets it, with a different expense treatment that can include the rent paid to the original landlord. The 30% rule for an owner letting a house or building should not be copied across to a sublease without checking that different framework.

The 5% figure often appears in an owner’s cash-flow statement without explaining why it applies. Departmental Order Tor.Por. 4/2528 requires a Thai company, juristic partnership or other juristic payer to withhold 5% in the specified case when it pays property rent to an individual taxpayer. That is a collection mechanism at the payment stage. It is not, by itself, the owner’s final annual personal income tax rate.

A non-resident recipient needs a different starting point. Revenue Code Section 50(3) states that payments of Section 40(5) or 40(6) income to a non-resident taxpayer are subject to 15% withholding. So a generic statement that “Thai rental tax is 5%” is incomplete, while the opposite statement that a non-resident simply pays 15% and is finished is also too broad. Withholding and the owner’s final filing position are two separate parts of the system.

The identity of the payer is just as important as the identity of the owner. The 5% rule in Tor.Por. 4/2528 is framed around a juristic payer. An ordinary individual tenant should not automatically be treated as if the same juristic-person withholding duty applies. Where a property manager sits between tenant and owner, the contract should show whether the manager is merely collecting money as agent or is itself the legal payer making a separate rental-related payment to the owner.

Good records make the tax credit usable. When tax is withheld, the owner should receive the withholding tax certificate commonly referred to as 50 Tawi. Revenue Code Section 50 Bis requires a certificate for the relevant withholding cases. The payer, recipient, gross income and withheld amount need to line up with the owner’s records; otherwise a management statement showing only a net transfer may not be enough to reconcile the return cleanly.

The amount withheld is generally brought into the tax computation as tax already paid. Revenue Department guidance expressly treats withholding as a credit against the taxpayer’s liability. Depending on the owner’s taxable base, deductions, allowances and other income, the final liability can differ from the amount taken out of each rent payment. That is why a 5% deduction visible on a monthly statement should never be labelled “the tax” without the rest of the calculation.

For owners using a management company, the practical question is not whether the manager says tax was handled. It is whether the payment chain can be reconstructed: who paid the owner, the gross income reported, what was withheld, which taxpayer identification number appears on the certificate, and how those figures will flow into PND.94 and PND.90.

Long-term rental income can create two filing points in the same tax year. Section 56 Bis covers Section 40(5)–(8) income earned from January through June and, where the filing obligation applies, requires the half-year return in September. The Revenue Department has published the 2026 PND.94 form, which expressly provides for expense deductions and a line deducting withholding tax from the half-year computation.

That half-year filing is one stage of the annual process. The year-end return still follows. Tax paid with PND.94 is credited in the later annual computation, and documented withholding is also brought into the calculation. An owner receiving rent throughout the year should therefore be able to reconcile the same income stream from bank receipts and certificates through the half-year return and then into PND.90.

Section 56 sets the statutory annual deadline at the last day of March following the tax year when the filing thresholds are exceeded. The Code states a general threshold above THB 60,000 for a person without a spouse and above THB 120,000 for a person with a spouse. The higher thresholds reserved for taxpayers whose income consists only of Section 40(1) employment income do not describe an owner earning Section 40(5) rent.

If a lease first starts in July and the owner had no Section 40(5) rental income during January–June, that particular rental stream does not populate the first-half PND.94 period. It still belongs in the annual analysis. The answer can change if the taxpayer has other Section 40(5)–(8) income during the first half, so the filing test should be performed for the taxpayer as a whole, not separately for each property.

Electronic filing may be granted a different deadline for a particular year, but that extension should be checked when it is actually needed. The durable statutory anchors are September for the half-year filing and the end of March for the annual return.

Assume, purely for illustration, that a property produces THB 40,000 of rent every month for a full calendar year. This is not a market-rent estimate. Gross Section 40(5) income is THB 480,000. If the owner qualifies for and elects the 30% standard deduction for a house or building, the expense deduction is THB 144,000, leaving THB 336,000 before personal allowances, other income and the rest of the tax computation.

Now separate the withholding scenarios. If the facts support 5% withholding, THB 24,000 could have been withheld over the year. In a different case where the recipient is non-resident and Section 50(3) requires 15%, the same gross rent would produce THB 72,000 of withholding. Those figures describe different taxpayer situations; they are not two taxes charged on the same payment.

Neither figure tells us the final PIT liability. The owner’s annual result depends on the combined tax base, allowable deductions and allowances, other income and the rules applicable to that year. Section 48(2) also requires an alternative minimum-tax comparison alongside the progressive calculation. The raw 0.5% comparison on THB 480,000 is THB 2,400, but that arithmetic alone still does not establish the final annual tax.

The 2026 PND.94 form visibly contains the 0.5% comparison for the half-year computation and a specific treatment where that computed amount is below THB 5,000. The annual return should be prepared from the current annual form and guidance for the relevant tax year without mechanically copying a line from the half-year form. The useful output of this example is therefore the structure of the calculation, not a fabricated final tax bill.

A property manager can simplify collection without taking the owner’s personal tax position away. The contracts should show the payment chain: who deals with the tenant, who receives the rent first, who legally pays the owner, and where withholding occurs. A statement showing only the net transfer leaves too much missing information for a clean tax reconciliation.

The core file should connect the legal arrangement to the cash: lease or management agreement, bank records, owner statements, withholding certificates, taxpayer identification number and copies of filed returns. An owner claiming actual expenses also needs evidence for each cost claimed, including support for its tax treatment.

Gross rent is often the figure that prevents mistakes. If the tenant pays THB 40,000 and the owner receives less after fees and tax, the records still need to show the income reported in the owner’s name and what created the difference. A mismatch between the company in the management agreement and the payer on the withholding certificate deserves explanation before filing.

Land and Building Tax is a separate property-based regime and does not replace personal income tax on rent. Short-stay or hotel-style letting is outside this article as well because it can introduce licensing and other regulatory issues.

The final filing position still turns on the owner’s status, the legal payer, the contract, allowable expenses and the complete tax base for that year. Those facts should drive the return, not a headline percentage on a management report.