Accounting Firm Thailand — Bookkeeping, Tax & Year-End

Identify your filing obligations before choosing a package

A Thai limited company needs accounting records and statutory financial statements even before it starts making sales. That does not mean every company files every withholding-tax or social-security form each month. The relevant returns depend on payments, employees, VAT status and other transactions.

VAT-registered businesses need to check their monthly PP.30 obligations, including months without sales. VAT registration itself depends on whether the activity is taxable and whether an exemption applies. A turnover test alone is not a universal answer. Confirm current due dates for the period and filing channel instead of relying on one deadline for all returns.

Reconcile sales to the money received

Foreign owners often receive management reports in a different currency or format from Thai statutory records. Tell staff what you need to read and which reports you already receive. An English summary is not a substitute for required Thai records or filings, and foreign ownership alone does not establish that BOI-specific reporting applies.

• Send sales records, invoices, credit notes and platform settlement reports.
• Provide statements for each company bank account so receipts and payments can be reconciled.
• Identify director funding, loans, asset purchases and overseas payments separately.
• Supply payroll changes and relevant employment records if the business has staff.

Readable scans help initial processing, but they do not establish that every original can be discarded. Agree document custody, access and retention responsibilities before work starts.

Input VAT and corporate tax deductions are different tests

Recording an expense, deducting it for corporate income tax and claiming input VAT are distinct assessments. A missing full tax invoice does not automatically make every expense non-deductible for corporate tax. Equally, possessing a tax invoice does not make all input VAT creditable.

Keep evidence of the business purpose, actual payee and payment, then check prohibited expenses and VAT credit restrictions separately. Personal spending by a director should not simply be treated as company expenditure.

Taking over from your previous accountant

Request the trial balance, general ledger, prior financial statements, filed returns and submission receipts, VAT reports, receivable and payable schedules, asset records and payroll data. Identify the last period the former provider handles and the person responsible for any outstanding returns.

Opening balances can only be assessed against the records supplied. A change of accountant does not certify that historic accounts are correct. Missing documents or unreconciled balances may require additional review; we do not promise an immediate takeover without interruption in every case.

Bookkeeping is not the statutory audit

Bookkeeping records transactions and prepares the agreed reports and filing information. The audit is a separate examination of financial statements under the requirements applying to the entity. For a Thai limited company, discuss the year-end audit arrangement separately from routine bookkeeping.

Annual work may include closing the ledger, supporting the auditor, shareholder approval, DBD submission and corporate income tax returns. These are separate steps with their own triggers and deadlines. Confirm what the quotation includes and who is responsible for each submission.

Give staff enough context for a quotation

Describe your business activity, accounting year, VAT status, monthly transaction volume, employees and overseas transactions. Explain whether you need historical corrections, payroll, year-end closing or audit coordination. Company service fees are provided by staff in a quotation, not published here.

Our actual offices are in Lat Phrao 95, Bangkok and Na Mueang Road, Khon Kaen. Contact staff by phone, LINE or email for the initial scope. Do not send tax-account passwords in ordinary messages; agree authorised filing access and a suitable document exchange arrangement before handing over records.

Related existing services

Questions before appointing an accountant

Official sources

• Revenue Department — VAT exemptions, input tax and returns
• Revenue Department — corporate income tax and deductions
• DBD — accounting law and financial-statement submission
• Federation of Accounting Professions — accounting and audit standards
• Social Security Office — applicable employer obligations