Thailand Company Annual Audit and Financial Statement Filing: Audit, Shareholder Resolution and Late Penalties

The Annual Audit Is a Statutory Duty, Not Optional

• Every Thai company must do it: regardless of size, trading or profit, a Thai limited company must prepare audited financial statements after each accounting year end
• Must be audited by a licensed auditor: the statements must be audited and signed by a Thai-registered licensed auditor (CPA/TA) — you can't just produce your own
• Dormant companies too: a "dormant" company that doesn't trade still needs statements, an audit and filing — don't assume no invoices means nothing to do
• This is a separate layer from monthly bookkeeping, withholding and VAT filing — for monthly duties see what a company must do each month

The Key Steps and Timeline Across the Year

1. Accounting year ends: fix the company's accounting year (most by a closing date) and close the books
2. Prepare financial statements: compile the year's accounts into a balance sheet, profit and loss statement, etc.
3. Auditor audits: a licensed auditor audits and issues an audit opinion
4. Hold a shareholders' meeting to approve: the law requires an annual general meeting within a set period after year end to approve the statements
5. File with the authorities: within the deadlines, submit the statements to the DBD and file with and pay corporate income tax to the Revenue Department

Each stage has a statutory deadline and links to the next (audit, then AGM, then filing), so a delay anywhere cascades into late filings. Exact dates depend on the company's accounting year and the Revenue Department and DBD current rules — set the timetable early in the year.

Documents to Prepare

• The year's accounting vouchers and books: invoices and receipts for income, cost and expenses
• Bank statements and transaction records
• Payroll, social security and withholding records
• Prior-year statements and tax returns (for comparison and carry-forward)
• Shareholder and director details and shareholders' resolution documents
• Keep monthly accounting tidy and the audit is easy; a mess crammed in at year end costs more and invites errors

Shareholder Resolutions: The Easily Overlooked Step

• The AGM is a legal requirement: hold it within the set period to consider and approve the audited statements
• Keep minutes and resolutions: written resolutions on approving statements, dividend decisions, director appointments/removals, etc. should be filed
• Many small companies with just one or two shareholders skip this, but a missing procedure is still non-compliance — don't cut it

Consequences of Late or Non-Filing

• Fines and surcharges: late statement submission and late tax filing both attract fines and surcharges that grow the longer you wait
• Directors may be liable: the filing duty sits with the company and its directors, and long-term non-filing can expose directors personally
• Affects company standing: prolonged failure to meet annual duties can flag the company or risk strike-off, affecting later dealings, banking and visa renewals
• High remediation cost: catching up on several missed years of audits, filings and fines far exceeds doing it on time each year

Common Misconceptions

• "No trading means nothing to do": wrong — a dormant company still needs an audit and filing
• "Monthly bookkeeping is enough": wrong — monthly filing is not the annual audit; do both
• "I'll catch up next year": wrong — late surcharges accumulate over time; delay only costs more
• If you won't keep operating a company, go through proper dissolution rather than leaving it to pile up fines

FAQ

My company doesn't trade or earn — do I still need an annual audit?

Yes. As long as a Thai company remains in existence, whether or not it trades or profits, each accounting year it must prepare financial statements audited by a licensed auditor and file with the DBD and Revenue Department. A dormant company does a "nil filing" but the process is the same. Assuming "no invoices, no business means nothing to do" is a common misconception that often ends in accumulated penalties years later. If you won't keep operating, dissolve it properly — don't just leave it, subject to current rules.

Is the annual audit the same as monthly bookkeeping and filing?

No. Monthly duties are bookkeeping, withholding, and — above the threshold — monthly VAT filing and social security. Annual duties are, after year end, preparing and auditing statements, holding a shareholders' meeting to approve them, and filing corporate income tax with the DBD and Revenue Department. They are different layers and both are required — doing the monthly work doesn't excuse the annual. Many owners watch only the monthly tasks, overlook the audit, and file late. Manage them as two parallel compliance lines.

What happens if the annual statements are filed late?

It triggers fines and surcharges that grow with the delay; the filing duty sits with the company and directors, so long-term non-filing can expose directors personally, and the company may be flagged, affecting banking and visa renewals. Catching up several missed years — back audits, back filings plus penalties — costs far more than filing on time each year. If you find you've missed one, remediate promptly rather than delaying further; exact penalties and remedies follow the Revenue Department and DBD current rules.

Can I prepare the audit report myself?

No. Thailand requires financial statements to be audited and signed off by a registered licensed auditor (CPA/TA); statements you prepare yourself can't replace the statutory audit. You can do routine bookkeeping yourself or via an agent, but the final audit sign-off must be a licensed auditor. So the usual split is: an accounting agent handles day-to-day books and monthly filings, and a partnered licensed auditor completes the audit at year end, followed by the shareholders' meeting and filing. Exact qualification requirements follow current rules.

Need Help?

TaiHuBang offers partner referrals and process support for Thai company tax and annual audit: day-to-day bookkeeping and monthly filing, annual statement preparation, connecting you with a licensed auditor to complete the audit, shareholders' resolution documents and annual filing guidance, plus dissolution advice for companies no longer trading. Everything follows the Revenue Department and DBD current rules, with professional conclusions to be verified by a licensed accountant/auditor. See our accounting and tax services or submit an enquiry, and an advisor will reply within 24 hours.