Accounting, Financial Reporting, and Audit in Thailand
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
Preparation of Annual Audited Accounts
VAT Registration
Preparation and Submission of VAT Returns
Tax and VAT Advisory Services
Financial Reporting and Filing Workflow for a Thai Company
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.
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.
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.
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.
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.
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
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.
Accounting Fee Calculator
The interactive calculator provides an estimated cost for accounting, bookkeeping, and statutory audit services.
Total fees depend on annual gross turnover, transaction volume, invoice frequency, the format of primary documentation submissions, and the overall scope of required advisory services.
Statutory audits are performed by licensed local auditors registered with TFAC.
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
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
The Process of Audit in Thailand
- Verifying the general ledger and journal entries prepared by the corporate accountant.
- Conducting spot-checks of primary documentation (invoices, contracts, customs declarations, and vouchers) to ensure compliance with TFRS standards.
- Requesting original bank confirmation letters directly from commercial banks to verify account balances and reconcile cross-border payments.
- 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
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:
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- 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%.
Thai regulatory authorities (the Department of Business Development and the Revenue Department) implement a mirror penalty framework.
For any compliance violation, administrative fines and statutory sanctions are levied simultaneously on both the corporate entity and personally on each authorized director with signing capacity.
Intentional data concealment or systematic non-compliance triggers direct criminal prosecution.
Penalties and Liability for Non-Compliance with Financial Reporting Requirements
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.