A representative office cannot generate revenue in Thailand, but it still has accounting and compliance obligations. Representative office accounting in Thailand includes bookkeeping, withholding tax, payroll, social security, annual financial statements and an audit. The RO must also remain within its five permitted activities and maintain clear records of funding received from its foreign head office.
Introduction
A representative office (RO) allows a foreign company to establish an entity in Thailand while maintaining 100% foreign ownership. However, the structure comes with important restrictions. An RO cannot generate income in Thailand and is limited to a specific range of activities performed on behalf of its overseas head office.
These restrictions also create a unique set of accounting and compliance responsibilities. Although an RO does not generate revenue, it must still maintain proper accounts and comply with applicable tax, payroll, social security, audit and annual filing requirements. Assuming that “no revenue means no accounting” can therefore leave a foreign head office with missed filings, incomplete records or compliance problems that only become apparent at year-end.
Representative office accounting in Thailand needs to be managed much like the accounting of an operating business, even though the RO itself has a much narrower commercial role. Withholding tax, payroll, social security, bookkeeping and annual financial reporting can all continue to apply.
For information about establishing an RO rather than operating one, see our guide to a representative office in Thailand.
Key Points
- A representative office can only perform five permitted activities on behalf of its foreign head office and cannot invoice customers or generate local revenue.
- Head office funding used to cover the RO’s operating expenses is not treated as ordinary business income, but other income must be considered separately.
- Withholding tax, payroll and social security obligations can continue even though the RO does not make sales in Thailand.
- The RO must maintain proper accounting records and prepare audited annual financial statements despite not being a separate Thai-incorporated company.
- An RO may no longer be suitable if the Thai operation needs to generate revenue, enter commercial contracts or expand beyond the activities permitted for a representative office.
The five activities a Thai representative office (RO) is allowed to perform
The first step in understanding RO compliance in Thailand is knowing what the office is legally permitted to do. A representative office is established to support the activities of its foreign head office in Thailand rather than operate as a separate revenue-generating business.
A representative office is limited to the following permitted activities:
- Sourcing goods or services in Thailand for the head office.
- Inspecting and controlling the quality and quantity of goods purchased or manufactured in Thailand for the head office.
- Providing advice relating to products of the head office sold to agents or consumers in Thailand.
- Disseminating information concerning new products or services of the head office.
- Reporting on business movements and developments in Thailand to the head office.
These limitations are important to know because a representative office cannot begin operating like a commercial subsidiary simply because it already has staff and an office in Thailand. Activities such as invoicing customers, selling goods, providing paid services, holding stock for local sale or entering into sales contracts may fall outside the permitted scope of an RO.
Unlike a Thai limited company established to carry on commercial activities, a representative office is not intended to generate revenue in Thailand. This distinction is a key point to the RO structure. The Revenue Department has also confirmed that if an RO carries out activities beyond the permitted functions performed for its foreign head office, any resulting income may become subject to Thai corporate income tax.
How a representative office is taxed in Thailand
The unusual tax position of an RO is one reason representative office accounting in Thailand can be misunderstood. The office may have employees, rent premises, pay suppliers and maintain a Thai bank account while generating no commercial revenue of its own.
Corporate income tax
Where an RO operates within its permitted scope, funds received from its foreign head office solely to cover its operating expenses are not treated as ordinary business income. The Revenue Department recognises that head-office remittances used exclusively to meet the expenses of the representative office are not included as taxable income for corporate income tax purposes.
Clear documentation is therefore important. Funds received from the foreign head office should be clearly recorded as funding for the RO’s operating expenses, rather than as payment for services provided by the Thai office.
The tax treatment may change if the RO generates income from activities outside its permitted scope. Other sources of income, such as bank interest, should also be recorded separately in the accounts and should not automatically be treated in the same way as funding received from the head office to cover operating expenses.
Withholding tax obligations continue
Just because the RO does not have any local sales or generate revenue, it does not mean that an RO has no monthly tax filing obligations. Where the office makes payments subject to Thai withholding tax, the relevant returns must still be filed and any tax withheld must be remitted to the Revenue Department.
PND 1 applies to withholding tax on employee salaries, while PND 3 and PND 53 may apply to certain payments made to Thai individuals and juristic persons respectively. Payments to overseas service providers may also give rise to PND 54 and PP36 filing obligations, depending on the nature of the payment and the applicable Thai tax rules.
Paper withholding tax returns are due by the 7th of the following month, while electronic filings can be submitted by the 15th. These deadlines remain an important part of the Thailand RO requirements, even though the representative office does not generate revenue from local sales.
For more detail, see our guides to withholding tax in Thailand and PND forms and filing deadlines.
VAT
An RO operating within its permitted non-revenue-generating activities does not make taxable supplies in the same way as an ordinary operating company and therefore would not normally register for VAT for those activities.
This has an important accounting consequence. Without VAT registration and taxable supplies, input VAT incurred on the RO’s expenses generally cannot be recovered in the same way as it can by a VAT-registered operating company. Instead, the VAT becomes part of the RO’s operating costs and should be taken into account when the foreign head office budgets for the cost of maintaining its presence in Thailand.
Personal income tax and social security
Employees of an RO remain subject to the normal Thai rules for employment income, including foreign employees who work in Thailand and receive a salary or other payment for their work. The RO must therefore manage the relevant payroll, personal income tax withholding and reporting obligations for its employees.
The RO must also comply with Social Security Office requirements for eligible employees. Registration is generally required within 30 days of an employee being employed. For 2026, both the employer and employee generally contribute 5% of qualifying wages, subject to the applicable monthly contribution ceiling.
These payroll and social security requirements remain an important part of RO compliance in Thailand. Although a representative office does not generate local revenue, it is still an employer and must meet the same applicable employment-related filing and payment obligations.
Bookkeeping, audit and annual filings for a representative office
Representative office accounting in Thailand requires proper books and accounting records to be maintained throughout the year. An RO cannot simply track its expenses at head-office level and reconstruct its Thai accounts when the annual filing deadline approaches.
Accounting books and supporting documents must be maintained in accordance with Thai accounting requirements, with relevant records generally retained for at least five years. Foreign-language documents may also need to be translated into Thai where required for accounting or regulatory purposes.
The RO must prepare annual financial statements and have them audited by a Thai licensed auditor. The relevant annual filings are due within 150 days of the end of the accounting period. Unlike a Thai limited company, however, an RO does not hold an annual general meeting to approve its financial statements because it operates as an extension of the foreign head office rather than as a separate Thai-incorporated company.
Compliance also continues throughout the year. An average monthly cycle may include withholding tax filings, payroll reporting and social security contributions, with the applicable deadlines depending on the filing method and obligations involved.
Keeping the accounts up to date throughout the year also makes the annual closing process considerably easier. This is particularly important where the foreign head office requires the RO’s Thai financial information for consolidated reporting or group audit purposes.
Capital, staffing and head office funding rules
The financial relationship between the RO and its foreign head office should be clearly reflected in the accounting records. Because an RO is funded by its head office rather than through commercial revenue generated in Thailand, remittances, expense reimbursements and cost allocations need to be properly recorded and supported.
The minimum capital requirement for an RO is THB 2 million, which must be funded by the foreign head office. This head office funding should be supported by bank records and accounting entries that clearly identify the source and purpose of each remittance.
The same approach should be taken with expenses shared between the RO and its head office. Where the head office pays an expense on behalf of the Thai RO, or the RO incurs a cost that is later reimbursed, the transaction should have a clear supporting trail. Consistent accounting treatment and regular expense reporting help identify genuine inter-office funding and reimbursements from commercial revenue.
An RO can also benefit from different staffing requirements when employing foreign personnel. While a regular Thai limited company generally needs four Thai employees for each foreign employee when supporting a work permit, a representative office can operate on a 1:1 ratio, with one Thai employee required for each foreign employee. This means Thailand RO requirements are considerably less staff-intensive where the Thai operation only requires a small number of foreign representatives, although the applicable work permit and immigration requirements must still be satisfied. This can be particularly useful for representative offices that only require a small team in Thailand.
If the business only needs to employ one or more people in Thailand, a PEO or EOR service may provide an alternative to establishing an RO.
Further information on the establishment and capital requirements is available in our guide to a representative office in Thailand.
How representative offices lose their status
The biggest risk for a representative office is often not a missed or incorrect accounting entry but a change in what the office actually does and the activities it carries out.
A representative may begin discussing prices with prospective customers and move from introducing the head office to effectively negotiating and closing transactions. An RO might invoice a local distributor for “support services”, begin keeping stock that can be supplied to customers, or allow a foreign representative to start working before the required work authorisation has been obtained.
These activities can create compliance issues because regulators consider the actual activities performed by the Thai office rather than its designation as a representative office. If the RO begins generating income or carrying out activities beyond its permitted scope, the foreign head office may be considered to be carrying on business in Thailand, potentially creating additional tax and regulatory obligations.
This is also where representative office tax Thailand issues can overlap with permanent establishment risk. See our guide to a permanent establishment in Thailand for a more detailed explanation.
Regularly reviewing the RO’s actual activities against its permitted scope should therefore form part of ongoing RO compliance in Thailand, particularly as the Thai operation grows.
When to convert from an RO to a Thai Limited Company
An RO can be suitable where the Thai presence is genuinely representative in nature. This may include gathering market information, monitoring suppliers, supporting products manufactured or sold by the foreign head office, and carrying out the other permitted RO activities without generating revenue in Thailand.
The structure may become less suitable as the business expands. If the company wants to invoice Thai customers, make local sales, provide paid services or establish a permanent revenue-generating operation, these activities can fall outside the permitted scope of an RO. Maintaining the existing structure at this stage can limit what the business is able to do in Thailand.
A Thai limited company can undertake commercial transactions within its registered business activities, subject to the applicable foreign ownership and licensing requirements. Where the Thai operation needs to generate revenue, the business may therefore need to close the RO and establish a Thai Limited Company. It is also possible in some cases to maintain both structures, although their employees, contracts, expenses and business activities should be kept separate.
Businesses undertaking eligible technology, digital, regional or other promoted activities should also consider BOI promotion. For qualifying activities, a BOI-promoted company can provide a structure for carrying out commercial operations in Thailand while potentially allowing 100% foreign ownership and access to tax and non-tax incentives.
Frequently Asked Questions
Does a representative office in Thailand pay corporate income tax?
An RO operating strictly within its permitted representative activities generally has no taxable operating income, and head office funding used solely to meet its expenses is not treated as business income. Other income, including interest or income arising from activities outside the permitted scope, must be reviewed separately.
Does a representative office in Thailand need an audit?
Yes. Having no sales revenue does not remove the accounting and audit obligations. Representative office accounting in Thailand includes preparing annual financial statements and having them audited in accordance with the applicable Thai accounting and filing requirements.
What can a representative office in Thailand legally do?
A representative office is limited to five categories of activity: sourcing for its head office, quality and quantity control, advising on head-office products, disseminating information about new head-office products or services, and reporting Thai business movements to its head office.
Can a representative office in Thailand invoice customers?
No. An RO is not intended to generate revenue from customers in Thailand. Issuing invoices for goods or services is a strong indication that the operation has moved beyond the permitted representative-office scope and may create Thai business and tax consequences for the foreign head office.
How many foreign staff can a representative office in Thailand employ?
The number depends on the activities undertaken and the applicable work permit criteria. Representative offices can have different staffing requirements from conventional Limited Companies, so the proposed Thai and foreign headcount should be reviewed before hiring rather than assuming the standard Limited Company ratio applies.
Is bank interest earned by a representative office taxable in Thailand?
Bank interest should not automatically be treated in the same way as head office funding received to cover expenses. Interest is income arising in its own right and its corporate income tax treatment and reporting should therefore be reviewed when preparing the RO’s annual tax position.
What monthly filings does a representative office in Thailand have?
Depending on its transactions and employees, filings can include PND 1 for payroll withholding, PND 3 and PND 53 for relevant Thai payments, and PND 54 and PP36 for certain overseas payments. Social security contributions must also be dealt with for eligible employees.
Does a representative office in Thailand need to register for VAT?
An RO carrying out only its permitted non-revenue-generating activities does not normally make taxable supplies requiring ordinary VAT registration. This also means VAT paid on Thai expenses will generally form part of the office’s cost rather than being recovered as input VAT.
How much capital must a representative office in Thailand bring in?
The general minimum capital requirement is THB 2 million, funded by the foreign head office in accordance with the applicable remittance requirements. Maintaining clear evidence of these transfers is an important part of both the thailand ro requirements and the RO’s accounting records.
When should a representative office convert to a Thai Limited Company?
Conversion should be considered when the Thai operation needs to generate local revenue, enter commercial contracts, expand beyond the RO’s permitted activities, increase its workforce significantly or develop into a permanent operating business. At that point, a Limited Company may provide a more appropriate structure.
Representative office accounting support from VB & Partners
Representative office accounting in Thailand requires more than recording expenses. The office must remain within its permitted activities while meeting its withholding tax, payroll, social security, bookkeeping, audit and annual filing obligations. Good accounting also provides the head office with a clear record of how its Thai operation is funded and where its money is being spent.
VB & Partners provides accounting services in Thailand through a Federation of Accounting Professions licensed, English- and French-speaking team. Packages start from THB 6,500 per month with fixed, transparent pricing, direct access to your accountants and continued ownership of your accounting data.
If you need support managing your RO’s accounting and compliance obligations, contact VB & Partners by WhatsApp or email to book a free consultation. We can review your requirements and provide a fixed-price quotation within 24 hours, with no obligation.
Disclaimer
This information is provided for general informational purposes only and is not legal, tax, or financial advice.
