Year-end closing in Thailand: what your auditor needs and what gets filed
The order of work for a Thai company's year end: gather documents, reconcile the bank, review receivables and payables, count inventory, hand over to the auditor, approve the accounts at a meeting, then file the financial statements and the corporate income tax return.
Zura Labs & Business Hub Co., Ltd.
A Thai company prepares annual financial statements, has them audited by a licensed CPA, presents them to a shareholders' meeting for approval, then submits the statements to the DBD and files the corporate income tax return with the Revenue Department within the statutory deadlines. The sequence that keeps this smooth: complete the document set, reconcile every bank account, confirm receivables, payables and inventory, then hand the auditor one consolidated package. Feeding documents over piecemeal is the main cause of a late close.
Reviewed 2026-09-21 by the Zura Labs corporate services team.
- Who audits
- A licensed CPA registered with the TFAC; every private limited company's statements are audited
- Two filings
- Financial statements to the DBD and the corporate income tax return to the Revenue Department
- Approval meeting
- Shareholders must approve the statements before filing; keep the minutes
- Always requested by auditors
- Full-year statements for every bank account, the fixed-asset register, loan agreements, and confirmation letters
- Half-year filing
- Companies also file a half-year estimate; under-estimating beyond the allowed margin can trigger a surcharge
- Record keeping
- Accounting records must be retained for the statutory period and be available for later inspection
How this works in practice
- 01
Back-plan deadlines from the filing date
Fix dates for handing documents to the bookkeeper, the draft to the auditor, the approval meeting, and the filing — with at least one revision round built in.
- 02
Complete revenue and expense documents
Chase missing tax invoices, receipts and withholding tax certificates. Expenses without supporting documents are typically added back for tax.
- 03
Reconcile bank and petty cash
Reconcile every account to period end, explain outstanding items and inter-account transfers, including any director transactions mixed into company accounts.
- 04
Confirm receivables, payables and inventory
Prepare an aged receivables listing, review doubtful debts, confirm payable balances, and count inventory with the count sheets retained.
- 05
Hand over one package and track auditor queries
Send the trial balance, chart of accounts, schedules for every balance, and key contracts in one go, then track every auditor query on one list until closed.
Reasons this gets delayed or rejected
Director money mixed with company accounts
Unexplained items become director loans or taxable income, and force repeated document requests from the auditor.
No inventory count evidence
A stock-holding business without period-end count evidence leaves the auditor unable to verify the balance, which affects the audit opinion.
Starting close to the deadline
Statements must be audited and approved at a meeting before filing. A late start leaves no room for corrections and risks a late submission.
Answers to the questions we hear most
Does a dormant company still close its accounts?
Yes. A registered company must prepare audited financial statements and file them on time even with no trading activity that year.
Who signs the financial statements?
The directors authorised in the affidavit sign the statements; the licensed CPA signs the audit report.
Can the accounting period be changed?
It can be changed, but only with prior approval from the relevant authority — it is not an internal decision.
What happens if filing is late?
Statutory fines and surcharges apply on both the statements and the tax side. Check current rates and conditions with the authorities.
- Federation of Accounting Professions (TFAC)
- The Revenue Department
- Department of Business Development (DBD)
This is general preparation information, not case-specific legal or accounting advice. Government fees, processing times and conditions change with official announcements. We review each guide on a schedule and show the review date on the page.