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GSL / International Taxation / Thailand

Tax Planning and Optimization in Thailand

Tax planning and optimization in Thailand features a combination of direct and indirect taxes, leveraging a territorial taxation principle for individuals alongside specialized fiscal regimes for targeted taxpayer categories. The core taxes include corporate and personal income taxes and VAT. Thailand also offers investment promotion programs managed by the Board of Investment (BOI), providing full corporate tax exemptions. The jurisdiction boasts a wide network of TDAs and participates in international tax information exchange.

Core Taxes

Corporate Tax
20%
Individual Income Tax
0-35%
Capital Gains Tax
Нет
Value Added Tax (VAT)
0%/7%
Withholding Tax on dividends and interest
10%/15%

Key Features of the Tax System

Taxation Principle

Territorial with specific foreign-source income remittance criteria

Corporate Tax Residency Criteria

Place of incorporation

Individual Tax Residency Criteria

180 days of physical presence

CFC Rules

None

Foreign Exchange Control

Yes

National Currency

Thai Baht (THB)

The Revenue Department

Thai Tax Authority

The Revenue Department under the Ministry of Finance of Thailand is responsible for formulating tax policy, managing statutory compliance, and collecting core internal revenues. Its mandate encompasses Personal Income Tax (PIT), Corporate Income Tax (CIT), Value Added Tax (VAT), Specific Business Tax (SBT), Withholding Tax (WHT), and stamp duty.

The authority holds comprehensive supervisory powers, including the right to execute field tax audits at an entity’s registered office.

The Revenue Department processes all corporate tax returns electronically via the e-Filing digital portal and is systematically transitioning businesses to mandatory, real-time verified electronic invoicing (e-Tax Invoice) and electronic receipts (e-Receipt).

Corporate Tax Residency Criteria

Tax residency status of a company is determined by its place of incorporation. A company registered under the laws of Thailand is recognized as a tax resident.

For domestic corporate taxation purposes, the concept of a tax resident is applied differently than in most jurisdictions.

A foreign company effectively managed from Thailand is not automatically recognized as a domestic tax resident based solely on its place of management under local law. However, conducting commercial activities within Thailand may trigger a tax liability on profits attributable to operations in the country.

For the purposes of a specific Double Taxation Agreement (DTA), the applicable criteria may differ. In cases of dual residency, the relevant treaty may utilize the place of incorporation and/or the place of effective management to determine tax residency.

Taxation

Companies incorporated in Thailand are subject to tax on their net profits under standard regulations.

Foreign companies are subject to tax on profits derived from business activities conducted within Thailand. Foreign entities that do not conduct business operations in Thailand but receive specific categories of income from Thai sources are subject to taxation via withholding tax.

Corporate Income Tax

The standard corporate income tax rate is 20% assessed on net profits.

For small and medium-sized enterprises (SMEs) with a paid-up capital not exceeding 5 million THB and an annual gross income from the sale of goods and services of up to 30 million THB, a progressive reduced corporate tax scale applies:

Annual Net Profit (THB) Tax Rate
Up to 300 000 0%
Above 300 000 to 3 000 000 15%
Above 3 000 000 20%

The taxable base is determined by aggregating the company’s gross revenues generated during the reporting tax period less all allowable business expenses.

Allowable Expense Deductions

When assessing net taxable corporate profits, expenses directly incurred to derive business revenue and complying with statutory tax regulations are deductible. The following items qualify for deduction:

  • Ordinary and necessary expenses related to business activities;
  • Interest on borrowings, subject to compliance with established requirements;
  • Specific taxes, duties, and levies;
  • Bad debts, provided all statutory non-collectibility criteria are met;
  • Depreciation and asset depletion allowances within prescribed legal thresholds;
  • Net operating tax losses carried forward for up to 5 consecutive subsequent tax periods;
  • Qualified donations to approved charities, educational institutions, and public welfare initiatives, subject to statutory caps;
  • Mandatory contributions to state-regulated funds.

Expenses explicitly prohibited under the Revenue Code are non-deductible. These include the corporate income tax itself, administrative fines, interest penalties, personal expenses, capital expenditures, and unapproved provisions.

Depreciation and Amortization

Depreciation of fixed assets is deductible in accordance with the maximum statutory ceiling rates established under Thai tax law:

Asset Classification Depreciation Rate
1. Buildings
Permanent buildings 5% per year
Temporary buildings 100%
2. Depletable Natural Resources 5%
3. Leasehold Rights
Without a written lease agreement 10%
With a fixed-term written lease agreement (no renewal right or fixed renewal periods) 100% / lease term (including all statutory renewal periods)
4. Intellectual Property and Intangible Assets
(Processes, formulas, goodwill, trademarks, licenses, patents, copyrights)
Unlimited useful life span 10%
Limited useful life span 100% / useful life duration
5. Other Fixed Assets (excluding land and inventory)
Equipment utilized for R&D operations 40% initial deduction, residual balance at 20%
Cash registers and POS automation machinery 40% initial deduction, residual balance at 20%
Passenger cars and buses with a capacity of up to 10 persons 20% (the total depreciable asset value base is capped at 1 million THB)
6. Computers and Component Hardware
Small and Medium-Sized Enterprises (SMEs) 40% initial deduction, residual balance over 3 years
Standard corporate entities Straight-line over 3 years
7. Computer Software and Systems
Small and Medium-Sized Enterprises (SMEs)* 40% initial deduction, residual balance over 3 years
Standard corporate entities Straight-line over 3 years

*For depreciation purposes, an enterprise is classified as an SME if it is a Thai corporation maintaining total fixed assets (excluding land) valued at less than 200 million THB and employing no more than 200 individuals.

VAT / Sales Tax

Thailand implements a Value Added Tax (VAT) at a standard rate of 7%. The tax legislation also provides for a 0% rate and specific VAT exemptions.

While the Revenue Code formally establishes a statutory baseline rate of 10%, it has been reduced to 7% by Royal Decree and will remain applicable until 30 September 2027.

Tax Rate / Regime Key Applications
Standard 7% Most taxable supplies of goods and services within Thailand, as well as import operations
Zero Rate 0% Export of goods and qualified international transactions
VAT Exemption Goods and services designated as exempt under the Revenue Code

Small Business VAT Exemption

Taxpayers executing VAT-eligible transactions are fully exempt from VAT registration and compliance if their annual gross turnover does not exceed 1.8 million THB. Registration for entities below this threshold is not mandatory but remains available on a voluntary basis.

Specific Business Tax (SBT)

The Specific Business Tax (SBT) applies instead of VAT to targeted commercial sectors, including banking, financial services, life insurance, pawnshops, and specific real estate transactions. This tax is assessed on gross revenue rather than net profit, with rates ranging from 0.1% to 3% depending on the business activity.

In addition to the baseline rate, a local municipal tax is imposed at a rate of 10% of the calculated SBT amount.

Taxpayers are required to submit the monthly statutory return via Form SBT.40 no later than the 15th day of the month following the taxable period.

TAX ADVISORY

Dividend Income

The taxation of dividend income received by a Thai company depends on the source of the income and compliance with shareholding thresholds and holding period requirements.

Dividends from Thai Companies

Dividends received by a Thai company from another domestic corporation are fully excluded from taxable income if the recipient entity meets the following conditions:

  • It holds a minimum of 25% of the distributing company’s voting shares,
  • There is no direct or indirect cross-shareholding structure between the two entities,
  • The underlying shares are held for a minimum of 3 months prior to the dividend distribution date and are not disposed of for at least 3 months after the distribution.

An identical full tax exemption applies to dividend distributions received by companies listed on the Stock Exchange of Thailand (SET), provided they satisfy the required statutory holding period rules.

If these conditions are not met, 50% of the received dividends must be included in the company’s taxable corporate profits. Given the standard corporate tax rate of 20%, this non-compliance triggers an effective tax rate of 10% on the gross dividend distribution.

Dividends from Foreign Companies

Dividends from a non-resident foreign company are fully exempt from CIT in Thailand provided that the receiving Thai company satisfies the following criteria:

  • It holds a minimum of 25% of the foreign corporation’s voting shares;
  • It maintains this minimum equity participation for at least 6 months prior to the dividend distribution date;
  • The underlying profits from which the dividends are distributed have been subject to tax in the foreign jurisdiction at a statutory rate of at least 15%.

Interest Income

For a Thai company, interest income is integrated into total taxable profits and subject to the standard corporate tax rate of 20%.

Upon payment of interest to a Thai company, the paying party withholds tax at source at a rate of 1%. The withheld amount is fully creditable against the company’s annual corporate income tax liability.

Royalties

For a Thai corporation, royalties are included in the taxable corporate income base and taxed at the standard corporate tax rate of 20%.

When royalties are distributed to a Thai company, a withholding tax of 3% is deducted at source. This withheld amount is creditable against the recipient’s final corporate tax liability.

Capital Gains

Thailand does not enforce a distinct or separate capital gains tax framework. Capital gains realized by a Thai company from the disposal of corporate assets are integrated into general taxable income and subject to the standard corporate tax rate of 20%.

Withholding Tax

In Thailand, withholding tax (WHT) applies to targeted income streams distributed to domestic and non-resident recipients. The tax must be deducted by the paying entity at source and remitted to the Revenue Department. The applicable rates depend on the category of income, the tax status of the recipient, and potential reductions under applicable Double Taxation Agreements (DTAs):

Income Type Domestic Recipient* Foreign Recipient*
Dividends 10% 10%
Interest 1% 15%
Royalties 3% 15%
Capital Gains None 15%
Rental Payments 5% 15%
Services and Professional Fees 3% 15%
Advertising Services 2% 15%
Prizes / Awards 5% 15%

*For Thai resident companies, the tax withheld serves as a creditable advance payment against their final corporate income tax liability.

**The specific withholding rate for non-resident foreign recipients may be significantly reduced or completely exempted under an applicable DTA.

Social Security

Thailand operates a mandatory social security system administered by the Social Security Office (SSO). Both the employer and the employee are required to contribute 5% each of the employee’s monthly gross salary (maximum is capped at 875 THB per month, for 2026-2028).

The maximum monthly contribution ceiling will increase to 1,000 THB starting in 2029, and to 1,150 THB starting in 2032.

Stamp Duty

Stamp duty applies to specified legal instruments, deeds, and commercial agreements. The applicable tax rate depends entirely on the nature of the document and its underlying financial value:

  • 0.1% for lease agreements, service contracts, share and bond transfers, and standard loan agreements;
  • 0.05% (capped at a maximum of 10,000 THB) for specific credit and financing agreements.

Thailand provides a comprehensive range of tax incentives designed to stimulate foreign direct investment, develop high-tech industries, and support small and medium-sized enterprises (SMEs). The most critical fiscal benefits are granted under the framework of the Investment Promotion Act (BOI), as well as via specialized regimes for specific high-value commercial operations.

Tax Incentives and Reliefs

Regime / Territory Tax Incentives and Reliefs
Standard Board of Investment (BOI) Incentives for Investment Projects Full corporate income tax exemption for up to 8 years, and up to 13 years for targeted high-tech projects. Additional tax and customs duty privileges may be granted depending on the project category.
Eastern Economic Corridor (EEC) (Chachoengsao, Chonburi, and Rayong provinces) Enhanced BOI incentives for projects in priority sectors, including advanced manufacturing, digital technologies, innovations, and the medical industry. A 50% reduction on corporate income tax may be granted in specific cases.
Special Border Economic Zones (SEZ) (10 provinces along the borders of Thailand) Full corporate income tax exemption for 8 years followed by a 50% tax reduction for an additional 5 years for specific priority activities. Reduced incentive periods apply to other eligible projects.
Northern Economic Corridor (NEC) Fiscal incentives for project development in agriculture, food processing, digital industries, creative economy, tourism, and wellness services.
Northeastern Economic Corridor (NeEC) Tax privileges for projects focused on agriculture, food processing, and biotechnology.
Central-Western Economic Corridor (CWEC) Investment promotion for projects in agriculture, food processing, electrical appliances, and electronics.
Southern Economic Corridor (SEC) Incentives for investment projects in agriculture, biotechnology, tourism, and wellness services.
20 Low-Income Provinces (Based on the lowest per capita income records) An additional 3-year corporate income tax exemption is granted for investment projects. Alternatively, for A1/A2 project categories, a 50% tax reduction applies for 5 years upon the expiration of the primary tax holiday.
BOI-Supported Industrial Estates and Industrial Parks An additional 1-year corporate income tax exemption is granted for eligible projects located within these designated industrial zones.

Tax Reporting

For a Thai corporation, core tax reporting mandates compliance across corporate income tax, VAT, and withholding tax. All tax returns must be submitted electronically to The Revenue Department of Thailand.

CIT Return

Half-Yearly Corporate Tax Return (Form PND.51) is filed within 2 months following the end of the first 6 months of the fiscal year, accompanied by the corresponding advance corporate income tax payment.

Annual Corporate Tax Return (Form PND.50) is filed within 150 days following the close of the fiscal year, accompanied by the final corporate tax payment.

VAT Returns

VAT Return (Form PP.30) is submitted electronically monthly no later than the 23rd day of the following month, even if no taxable transactions occurred during the reporting period.

The return declares gross sales, zero-rated and exempt supplies, output VAT, input VAT, and the final net VAT payable or input VAT credit amount.

Additional

Specialized VAT Returns: Form PP.30.9 applies to foreign electronic service providers operating under the simplified digital tax regime. Form PP.36 applies to the reverse-charge VAT remitted by a Thai service recipient when utilizing cross-border services provided by a non-resident entity.

Withholding Tax Returns

When executing targeted distributions, a company must deduct withholding tax and remit it to the tax authority using specific forms based on the payment category and recipient status:

  • Form PND.1 – Tax withheld from salaries, wages, and employment-related remuneration paid to individual taxpayers;
  • Form PND.2 – Tax withheld from specific personal income streams, including royalties and designated investment yields;
  • Form PND.3 – Tax withheld from non-employment personal income distributions, such as rentals, professional fees, and independent service fees;
  • Form PND.53 – Tax withheld from targeted payments distributed to Thai resident corporate entities, including interest, dividends, royalties, rentals, and service fees;
  • Form PND.54 – Tax withheld from targeted payments distributed to foreign corporate entities not conducting business operations within Thailand, as well as taxes assessed on profit remittances outside the jurisdiction.

Tax Registration

A corporate entity subject to corporate income tax must secure a Tax Identification Number (TIN) within 60 days from its date of incorporation, or within 60 days from the commencement of commercial activities for foreign enterprises.

A Thai company assigned a corporate registration number by the Department of Business Development (DBD) utilizes this registration number as its statutory TIN. Consequently, a separate tax registration process is not required for domestic corporations.

A foreign company conducting business operations within Thailand must formally secure a TIN within 60 days from the date its local commercial activities begin. To register, the enterprise must submit Form L.P.10.3 to the regional tax office overseeing the business location.

VAT Registration

Taxpayers regularly executing VAT-eligible transactions in Thailand are legally required to register as a VAT vendor once their annual gross turnover exceeds 1.8 million THB. The statutory registration application must be submitted within 30 days from the date the threshold is breached.

VAT registration can be processed online via the official portal of The Revenue Department of Thailand.

Penalties and Liability for Non-Compliance

Tax non-compliance in Thailand triggers additional tax assessments, administrative penalties, interest surcharges, and, in severe cases of intentional evasion, criminal liability.

Violation Liability
Late Tax Settlement An interest surcharge of 1.5% per month (or partial month) assessed on the underpaid tax amount, capped at the total amount of the tax principal.
Late Filing of Annual Corporate Tax Return Administrative fine of up to 2,000 THB. If an additional tax liability exists – a monthly surcharge of 1.5% of the underpaid amount.
Underestimating Estimated Net Profit in Half-Yearly Return by More Than 25% Without Reasonable Cause A surcharge penalty of 20% of the underpaid corporate tax amount. This may be reduced if voluntarily amended prior to a formal tax audit.
Tax Understatement Discovered During a Tax Audit Assessment of the unpaid tax, a monthly surcharge of 1.5%, and an administrative penalty equal to 100% or 200% of the tax underpayment.
Failure to Submit or Submit Incorrect Transfer Pricing (TP) Documentation Administrative fine of up to 200,000 THB if committed without reasonable justification.
Failure to File a Monthly VAT Return Administrative penalty equal to 200% of the VAT payable for the corresponding taxable period, plus the standard interest surcharge.
Conducting Business Activities Without Mandatory VAT Registration Administrative penalty equal to 200% of the VAT amount due during the unregistered period, or a minimum of 1,000 THB per taxable period (whichever is higher), plus the standard interest surcharge.
Utilization of Fake Tax Invoices (e-Faktur) Administrative penalty equal to 200% of the VAT amount stated on the fraudulent invoice. Criminal prosecution may apply depending on the scale of the fraud.
Intentional Tax Evasion (Providing false declarations, submitting forged evidence, or executing fraudulent schemes) Criminal imprisonment from 3 months to 7 years and a fine between 2,000 and 200,000 THB.
Intentional Non-Submission of Tax Returns to Evade Tax Liability Fine of up to 200,000 THB and/or criminal imprisonment for up to 1 year.

Anti-Avoidance Rules

Transfer Pricing Rules

Thailand enforces transfer pricing regulations based on the arm’s length principle. They apply to transactions between related and interdependent entities. If the commercial or financial terms of such transactions deviate from conditions established between independent parties, the Revenue Department is legally authorized to adjust the company’s income and expenses to correct the taxable corporate profit base.

Related Party Criteria

For transfer pricing purposes, corporate entities are recognized as related or interdependent if they satisfy at least one of the following conditions:

  • One company directly or indirectly holds at least 50% of the equity capital in another company;
  • The same shareholders or participants directly or indirectly hold at least 50% of the equity capital in each of the respective companies;
  • The companies maintain a structural relationship in terms of capital, management, or corporate control such that one entity cannot act independently of the other, subject to criteria established by ministerial regulations.

In statutory practice, direct equity participation and common ownership represent the primary triggers for related party status.

Transfer Pricing Documentation

Thai tax regulations mandate the preparation of transfer pricing documentation to demonstrate that intercompany transactions comply with the arm’s length standard.

The legislation does not require documentation to follow the specific Master File and Local File formats utilized in other jurisdictions.

The Revenue Department recommends that entities compile this documentation concurrently with the execution of transactions and retain it locally at the company’s registered office. The documentation must disclose:

  • The corporate group structure;
  • The nature of business operations performed by the parties;
  • Terms, conditions, and financial volumes of intercompany transactions;
  • Functions performed;
  • Assets utilized and risks assumed;
  • The transfer pricing policies applied;
  • Method of TP choice;
  • Benchmarking results of comparable independent transactions.

Upon receiving a formal statutory request from the tax authority, the documentation must generally be submitted within 60 days. Upon demonstrating reasonable justification, this compliance deadline may be extended, provided the total combined period does not exceed 120 days.

Related Party Disclosure Form

Corporate entities with an annual gross turnover of at least 200 million THB must independently file the Transfer Pricing Disclosure Form. This statutory filing outlines all related party relationships and the financial volume of transactions executed between them. The report must be submitted concurrently with the annual corporate tax return (Form PND.50).

Country-by-Country Reporting (CbCr)

Thailand implements Country-by-Country Reporting (CbCr) compliance in strict accordance with the international OECD BEPS standards. This framework provides the tax authority with an overview of the global allocation of income, profits, taxes paid, and key operational indicators of a multinational enterprise (MNE) group across tax jurisdictions. Thailand executes the automatic exchange of CbC reports with foreign tax authorities under active international agreements.

Parameter Requirement in Thailand
Filing Entity The Ultimate Parent Entity (UPE) of a Thai-headed MNE group. In designated statutory scenarios, a designated Surrogate Parent Entity (SPE) may execute the filing instead.
Group Consolidated Threshold 28 billion THB in consolidated group revenue during the immediately preceding fiscal period.
Reporting Scope and Content Revenues, profit/loss before tax, corporate income tax paid, corporate income tax accrued, stated capital, accumulated earnings, number of employees, tangible assets, and explicit business activities of each constituent entity per jurisdiction.
Submission Format Electronically via the dedicated CbCr portal of the Revenue Department of Thailand. The report must be compiled in the standardized XML format based on the OECD benchmark.
Filing Deadline Within 12 months following the final day of the corresponding fiscal year.

CFC Rules

Thailand does not enforce specific Controlled Foreign Corporation (CFC) rules.

Thin Capitalization Rules

Thailand does not enforce specific thin capitalization rules that establish a fixed debt-to-equity ratio or restrict interest deductibility based on corporate debt thresholds.

Foreign Exchange Control

Foreign exchange control in Thailand is administered by the Central Bank of Thailand (Bank of Thailand / BOT) under the framework of the Exchange Control Act.

While foreign exchange operations are generally liberalized, the purchase, sale, and remittance of foreign currency must be executed exclusively through authorized financial institutions. The import of foreign currency and Thai Baht (THB) into Thailand is permitted without any volume limitations.

Foreign Exchange Control Limits

Foreign exchange operations in Thailand are regulated by the Bank of Thailand (BOT) under the Exchange Control Act.

While currency transactions are largely liberalized, all foreign exchange purchases, sales, and cross-border transfers must be processed via authorized financial institutions. The limits, monitoring thresholds, and currency restrictions are structured as follows:

Transaction Type Limits and Restrictions
Import of Foreign Currency and THB Permitted without any volume limitations.
Cross-Border Cash Declaration Mandatory customs declaration is required when importing or exporting physical Thai Baht exceeding 450,000 THB, or foreign currency cash exceeding 15,000 USD (or its equivalent).
Inbound Fund Remittances Mandatory repatriation requirements apply to all inbound foreign currency receipts equivalent to 1 million USD or more per transaction.
Export Proceeds Repatriation Inbound foreign currency proceeds must be repatriated within 360 days from the export or transaction date, and subsequently sold to an authorized bank or deposited into a local foreign currency account.
Outbound Cross-Border Transfers Generally permitted for settlements of goods, services, qualified investments, and legitimate commercial obligations, subject to specific regulatory reporting rules set by the BOT.
Supporting Documentation Threshold For foreign exchange transactions equivalent to 200,000 USD or more, authorized banks must request comprehensive supporting documentation, unless the institution already maintains a verified client profile.
Export of Foreign Currency Cash Permitted strictly within the limits legally purchased from authorized domestic banks or licensed currency exchange portals.
Export of Thai Baht Cash Capped at 2 million THB for outbound travel to neighboring countries, Vietnam, and China’s Yunnan province. Capped at 50,000 THB for all other international destinations without prior BOT approval.

FAQ

Are dividends from a foreign corporation deposited into an offshore account of a Thai individual tax resident subject to tax?

Foreign dividends received starting 1 January 2024 are taxable in Thailand if the individual is physically present in the country for 180 days or more during the corresponding tax year and subsequently remits that income into Thailand. If only a portion of the dividends is remitted, tax applies strictly to the remitted amount.

If the dividends remain in the offshore bank account and are not remitted into Thailand, no Thai personal income tax liability arises. Furthermore, foreign-source income derived prior to 1 January 2024 remains completely exempt from Thai taxation upon subsequent remittance.

Has Thailand implemented the OECD Pillar Two global minimum tax, and how does it affect BOI-supported enterprises?

Yes, Thailand has formally implemented the Pillar Two framework. Effective from 2025 and continuing through 2026, multinational enterprise (MNE) groups with a consolidated global annual revenue exceeding 750 million EUR are subject to a 15% global minimum tax rate.

This implementation significantly impacts major corporations: if a Thai subsidiary of an MNE secures a corporate income tax holiday from the Board of Investment (BOI), but its effective tax rate drops below 15% under the OECD rules, a domestic Top-up Tax applies.

The Revenue Department of Thailand assesses the difference up to the 15% baseline locally to prevent these tax revenues from being collected by the parent company’s home jurisdiction. For mid-sized enterprises and independent companies not operating within large global groups, standard domestic BOI tax incentives remain fully active and unaffected.

Is a foreign national required to secure a TIN in Thailand if they are a tax non-resident?

Yes, a non-resident must secure a Tax Identification Number (TIN) if they derive income subject to Thai taxation, including real estate income, employment remuneration, or other income from Thai sources, regardless of where the payment is executed.

The foreign national must submit an application via Form L.P.10.1 within 60 days from the date the taxable income is received. A statutory exemption applies to foreign nationals present in Thailand for no more than 14 days per visit and no more than 90 days in aggregate during the tax year.

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