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Accounting, Financial Reporting, and Audit in Thailand

Audit in Thailand is mandatory for all registered enterprises. Companies must maintain bookkeeping and prepare financial statements in accordance with national accounting standards, and an independent certified auditor must conduct the audit. Our comprehensive audit services include bookkeeping, financial reporting, organizing audits with certified public auditors (CPAs), filing tax returns, and providing tax advisory.

Financial and Tax Compliance in Thailand

Accounting & Bookkeeping

Mandatory. Must be maintained by an accountant registered with the TFAC.

Records must be retained for 5 to 7 years.

Financial Statements Preparation

Annually

Accounting Standards

Thai Financial Reporting Standards (TFRS), based on IFRS

Consolidated Financial Statements

Mandatory if there are subsidiary companies, and the company is recognized as a holding

Dormant Reporting Option

Permitted, but does not exempt from annual audits and filings

Filing Financial Statements with the Registry

Yes

Filing Financial Statements with the Tax Authority

Yes, submitted as part of the Corporate Income Tax Return.

Statutory Audit

Mandatory for all companies. Conducted by a certified Thai public accountant (CPA).

Tax Returns

Annual return (PND 50), half-year return (PND 51), and monthly returns for VAT, withholding tax, and payroll tax.

Investment Reporting (BOI)

Annual reporting is required for companies approved by the Board of Investment.

Annual Return / Corporate Reporting

Annual general meeting of shareholders must be held, and an updated list of shareholders must be submitted.

Audit and Accounting Fees

Accounting & Bookkeeping

Maintenance of accounting records and systematic archiving of documents
Price 200 USD/hour

Preparation of Annual Audited Accounts

Depending on the scope of work and the specialist’s qualifications, but not less than USD 1,900
Price 100-400 USD/hour

VAT Registration

Price 1200 USD

Preparation and Submission of VAT Returns

Price 200 USD/hour

Tax and VAT Advisory Services

Price 400 USD/hour

Financial Reporting and Filing Workflow for a Thai Company

1

Accounting & Bookkeeping

Limited liability companies must maintain continuous accounting records, including invoice registration, journals, payroll, tax computations, and primary document retention in Thailand for at least 5 years.

Tax authorities can extend this retention period up to 7 years.

2

Ongoing Tax Compliance

Throughout the financial year, the company must fulfill regular monthly and half-year obligations:

  • File monthly returns for VAT (Form PP.30), withholding tax (Forms PND 1, 3, 53), and Social Security Fund (SSO) contributions.
  • Submit a half-year return forecasting net profits and pre-pay 50% of the corporate income tax using Form PND 51 within 2 months after the end of the first 6 months of the financial year.
3

Financial Statements Preparation

Annual financial statements are prepared under Thai Financial Reporting Standards (TFRS) in the Thai language, and must be completed by an accountant registered with the Federation of Accounting Professions (TFAC).

Holding structures require consolidated statements.

4

Statutory Audit

A financial audit is mandatory for all Thai companies without exception, even for dormant entities with zero operational activity.

A licensed independent Thai Certified Public Accountant (CPA) must perform the audit.

The audited accounts must be uploaded to the DBD e-Filing system within 1 month from the date of approval at the general meeting of shareholders.

5

Tax Return Preparation and Submission

Based on the audited financial statements, the annual corporate income tax return is completed.

The annual return, along with the independent auditor’s report and the financial statements, must be submitted to the Revenue Department via the e-Revenue portal within 150 days from the financial year-end date.

6

Parallel Annual Obligations

The company must hold its Annual General Meeting of Shareholders (AGM) within 4 months from the financial year-end.

Following the meeting, an updated list of shareholders (Form BOJ.5) must be submitted to the DBD within 14 days.

Accounting in Thailand

The obligation to maintain accounting records begins immediately upon company registration and is is regulated by the Accounting Act B.E. 2543 of 2000 (governing accounting requirements, appointments, and accountant qualifications) and the Accounting Professions Act B.E. 2547 of 2004 (governing professional practices under the Federation of Accounting Professions).

Under Act B.E. 2543, authorized directors bear ultimate liability for organizing corporate bookkeeping. Directors must:

  • Ensure the proper compilation of all primary documentation
  • Provide all supporting documents (invoices, receipts, bank statements, customs declarations) to the appointed accountant in a timely manner
  • Register the appointed accountant’s details with the Department of Business Development (DBD) within 14 days of appointment, and update any changes within 14 days of a new decision

Qualification Requirements for a Thai Accountant

Only specialists with verified qualifications who hold active membership with the Federation of Accounting Professions (TFAC) are legally permitted to maintain a company’s books in Thailand. Educational requirements depend on the size of the business:

Small and Medium-Sized Enterprises (SMEs) (Registered capital ≤ 5 million THB, total assets ≤ 30 million THB, and annual turnover ≤ 30 million THB) The accountant must hold at least a Higher Vocational Certificate (HVC) in accounting.
Large Businesses and Holdings (exceeding any of the SME criteria). The accountant must hold a Bachelor’s Degree in Accounting or higher.

Appointing an individual who lacks a TFAC license or the required degree constitutes a regulatory offense, subjecting both the company and its directors to a statutory fine of up to 10,000 THB.

Primary Records Retention

All accounting ledgers, journals, balance sheets, invoices, and payment receipts must be stored at the company’s registered office address in Thailand. The standard statutory retention period is at least 5 years from the financial year-end closing date. However, the Revenue Department may extend this period up to 7 years during in-depth tax audits or if the company carries forward tax losses from previous years.

Books must be kept exclusively in the national currency, Thai Baht (THB). All entries in the general ledger and journals must be written in the Thai language, and incoming foreign invoices must include a translation of key transaction details.

Financial Statements of a Thai Company

Both the Department of Business Development (DBD) and the Revenue Department jointly oversee the preparation and filing of annual financial statements in Thailand.

Submission is mandatory for all registered legal entities, including non-active or dormant companies.

Accounting and Reporting Standards

Bookkeeping must comply with Thai Financial Reporting Standards (TFRS), which are categorized into two frameworks:

  • Thai Financial Reporting Standards for Publicly Accountable Entities (Full TFRS)are fully converged with International Financial Reporting Standards (IFRS), this framework is mandatory for public companies, financial institutions, and large holding groups.
  • Thai Financial Reporting Standards for Non-Publicly Accountable Entities (TFRS for NPAEs) are a simplified national version of the standards used by most private companies with foreign ownership.

Foreign-owned entities are also permitted to adopt full international financial reporting standards (IFRS) if required.

Components of Financial Statements

A standard set of financial statements in Thailand includes the following components:

  • Statement of Financial Position (Balance Sheet)
  • Income Statement (or Statement of Comprehensive Income)
  • Statement of Changes in Equity
  • Notes to the Financial Statements
  • Comparative financial data for the preceding reporting year.

Large holding groups that follow the Full TFRS framework must also include a Statement of Cash Flows.

Reporting (Financial) Period

The initial reporting period begins on the exact date of corporate incorporation and must conclude within the following 12 months.

Most businesses use the standard calendar year from January 1 to December 31 as their financial year.

A company may select an alternative closing date (such as March 31 or June 30), but changing an established reporting period requires prior formal approval from both the Revenue Department and the DBD.

Language and Currency of Reporting

Financial statements must be prepared in the national currency, Thai Baht (THB), and written in the Thai language.

Consolidated Financial Statements

Companies holding subsidiaries with a ownership stake exceeding 50% are required to prepare consolidated financial statements for the corporate group.

Audit of Financial Statements

An independent certified auditor must examine and verify the financial statements under Thai Standards on Auditing. Only an independent specialist holding active Certified Public Accountant (CPA) status and a valid practicing license from the Federation of Accounting Professions (TFAC) can perform the audit. Shareholders must approve the appointment of the auditor annually at the General Meeting.

Thai legislation provides no small-business audit exemptions for limited liability companies; a statutory audit remains mandatory even for dormant entities filing nil returns.

The Process of Audit in Thailand

  1. Verifying the general ledger and journal entries prepared by the corporate accountant.
  2. Conducting spot-checks of primary documentation (invoices, contracts, customs declarations, and vouchers) to ensure compliance with TFRS standards.
  3. Requesting original bank confirmation letters directly from commercial banks to verify account balances and reconcile cross-border payments.
  4. Preparing the final Independent Auditor’s Report containing a professional opinion on the fair presentation of the company’s financial standing (unqualified, qualified, or adverse).

The finalized auditor’s report serves as the mandatory foundation for tax return submissions to the Revenue Department.

For public companies listed on the Stock Exchange of Thailand (SET), financial statements are subject to mandatory quarterly reviews by licensed auditors.

Filing Audited Financial Statements

Department of Business Development (DBD) The Revenue Department
Audited financial statements must be formally approved at the Annual General Meeting of Shareholders (AGM) within 4 months from the financial year-end date (by April 30 for a standard calendar year).

Directors must upload the approved financial reporting package and the auditor’s report to the DBD e-Filing system within 1 month from the AGM date (by May 31 for a standard calendar year).

A copy of the audited financial statements and the independent auditor’s report must be attached to the Annual Corporate Income Tax Return (Form PND 50). This return must be submitted via the e-Revenue portal within 150 days from the financial year-end closing date (by May 31 for a standard calendar year).

Tax Returns of Thai Companies

Tax compliance in Thailand is a continuous obligation. Companies must report their financial metrics through regular monthly returns, intermediate half-year payments, and final annual filings.

All tax reporting must be executed electronically through the state e-Revenue system.

Annual Tax Reporting Half-Year Tax Reporting
Form PND 50 serves as the final Annual Corporate Income Tax (CIT) return and must be filed within 150 days from the close of the financial year. The complete annual financial reporting package and the certified Thai auditor’s report must be attached to this form.

Submitting a return without an audit invalidates the tax filing.

Form PND 51 must be submitted within 2 months after the end of the first 6 months of the financial year. It requires companies to forecast their net profit and corporate income tax (CIT) liabilities for the entire current year, after which the entity pays 50% of the estimated annual tax as an advance.
If the actual net profit at year-end exceeds the forecast by more than 25% without a valid justification, the Revenue Department will levy a 20% fine on the underpaid advance tax amount.

Monthly Tax Reporting

Thai entities must submit the following tax forms through the electronic e-Filing system by the 23rd day of each subsequent month:

    • VAT Returns (Form PP.30), if the company is registered for VAT (upon reaching an annual turnover of 1.8 million THB or when hiring foreign employees). A nil return must be submitted if there was no business activity during the month.
    • Withholding Tax Returns when remunerating local contractors (e.g., 3% for services, 5% for rentals, 2% for advertising).

Form PND 3 for payments made to resident individuals, and

Form PND 53 for payments made to resident corporate entities.

  • Personal Income Tax Returns (Form PND 1) covers payroll taxes withheld by the company from employee salaries under a progressive tax rate scale ranging from 5% to 35%.

Penalties and Liability for Non-Compliance with Financial Reporting Requirements

Violation Corporate Fine Personal Fine for Directors Additional Sanctions & Consequences
Failure to maintain accounting / Lack of primary records Up to THB 30,000 Up to THB 30,000 Progressive daily fine of THB 1,000 per day until rectified
Failure to appoint a qualified accountant Up to THB 10,000 Up to THB 10,000 Suspension of access to the e-Filing electronic reporting system
Failure to perform an audit / Submission of an unaudited balance sheet Financial statements are deemed invalid Revenue Department field tax audit and full comprehensive audit
Late submission of annual financial statements to the DBD Up to THB 50,000 Up to THB 50,000 Automatic referral of the case to the Royal Thai Police to summon the director to the Economic Crime Division
Late submission of annual PND 50 THB 2,000 THB 2,000 A monthly surcharge of 1.5% of the unpaid tax amount
Late submission or failure to file monthly tax returns THB 200 per form – A monthly surcharge of 1.5% of the tax amount declared
Systematic failure to file financial statements (for more than 3 consecutive years) Compulsory strike-off from the registry Blacklisting by the DBD The company is deemed inactive, and the director is disqualified from registering new companies in Thailand
Use of Thai nominee shareholders (49/51 structure) Company liquidation / Dissolution Imprisonment for up to 3 years A fine ranging from THB 100,000 to THB 1,000,000 for all accomplices under the FBA
Tax evasion / Forgery of invoices Up to 200% of the concealed tax amount Imprisonment for a term of 3 months to 7 years Classified and prosecuted as a criminal offense

FAQ on Audit and Reporting

Is a statutory audit mandatory in Thailand?

Yes, a statutory audit is mandatory for all registered corporate entities in Thailand. Financial statements must be examined and certified by an independent Certified Public Accountant (CPA). Public companies are subject to additional requirements, including mandatory audits and quarterly reviews of their financial reporting.

What is the standard accounting period in Thailand?

The standard financial year in Thailand runs from January 1 to December 31. However, a company may apply for an alternative accounting period, subject to approval from the Department of Business Development (DBD).

Is a Thai company required to file financial statements and undergo an audit if it is inactive (dormant)?

Yes, full compliance is mandatory. Thai legislation does not grant compliance exemptions for inactive companies. Even if a company has zero bank transactions and no commercial operations, it is still required to file monthly nil tax returns. Furthermore, at the end of the fiscal year, the company must engage a licensed Thai auditor (CPA) to prepare a nil balance sheet and submit it alongside the audit report to both the Department of Business Development (DBD) and the Revenue Department.

Can a foreign company director with a relevant degree be appointed as the official accountant?

No, this is legally prohibited. Pursuant to the Accounting Act B.E. 2543, the individual responsible for bookkeeping must be an accountant officially registered with the Department of Business Development (DBD) and a member of the Federation of Accounting Professions (TFAC). It is impossible to qualify as an official accountant without holding Thai citizenship and passing the local professional accreditation.

What are the consequences of failing to file audited financial statements with the registry?

If a company misses the filing deadline (which is 1 month from the date of the Annual General Meeting of shareholders), the Department of Business Development (DBD) automatically issues fixed penalties to both the corporate entity and each director personally. If the fines remain unpaid and the statements are not filed within a few months, the DBD will officially refer the case to the Economic Crime Division of the Royal Thai Police. Consequently, the director will be issued a formal police summons to appear at the police station for questioning.

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