Monthly bookkeeping and year-end closing

Monthly posting, trial balance, bank reconciliation and annual closing for filing with the Department of Business Development and the Revenue Department. It sits within accounting, tax, audit and payroll, so it can be planned alongside related work without duplicating filings.

Limited companies, partnerships and foreign-owned entities in Thailand. If you are unsure whether your case qualifies, share the documents and the receiving authority so the scope can be assessed first.

Normally: Input and output tax invoices and receipts · Bank statements for all accounts · Fixed-asset register and key contracts · Payroll and social-security data. The receiving authority may require additional items.

1) Collect monthly documents and check tax-invoice completeness 2) Post entries and reconcile bank accounts 3) Produce the trial balance and management report 4) File the applicable monthly tax returns 5) Close the year and prepare the auditor pack

• Tax invoices with incomplete buyer details may not support input-tax credit • Late posting cascades into late filings and penalties

Compared with an in-house accountant, an outsourced team adds review layers and continuity — a fit until transaction volume justifies a full department.

Department of Business Development and Revenue Department is the primary authority. Business services in Thailand map onto clearly separated authorities: company registration sits with the Department of Business Development, taxation with the Revenue Department, social security with the Social Security Office, certification of translations for overseas use with the Department of Consular Affairs (MFA), and signature certification with lawyers authorised under Lawyers Council regulations. Routing each task to the correct authority from the start is what prevents re-filing and rejection.

Send the documents you hold, the intended use, and the receiving authority or destination country. We assess scope, flag missing items and propose a filing order that reduces rejection risk. Available in Bangkok, Khon Kaen, Udon Thani, Nong Khai and online nationwide.

Yes. Most matters begin with a scan review, with originals couriered only when required. Clients across all 77 provinces and overseas clients can proceed online, in many cases with a power of attorney.

The content follows the published mandates of the responsible authorities and was last reviewed on 2026-08-17. Confirm current requirements with the receiving authority before filing, as forms and conditions change.

This item evidences a fact the receiving desk must verify before approval. If it is missing or inconsistent with the rest of the bundle, the file is usually returned at intake rather than at assessment.

This item evidences a fact the receiving desk must verify before approval. If it is missing or inconsistent with the rest of the bundle, the file is usually returned at intake rather than at assessment.

This item evidences a fact the receiving desk must verify before approval. If it is missing or inconsistent with the rest of the bundle, the file is usually returned at intake rather than at assessment.

This item evidences a fact the receiving desk must verify before approval. If it is missing or inconsistent with the rest of the bundle, the file is usually returned at intake rather than at assessment.

Collect monthly documents and check tax-invoice completeness This step must complete before the next one begins; working out of order usually forces a restart.

Post entries and reconcile bank accounts This step must complete before the next one begins; working out of order usually forces a restart.

Produce the trial balance and management report This step must complete before the next one begins; working out of order usually forces a restart.

File the applicable monthly tax returns This step must complete before the next one begins; working out of order usually forces a restart.

Close the year and prepare the auditor pack This step must complete before the next one begins; working out of order usually forces a restart.

Check it before work starts: reconcile the data across every document in the bundle and confirm the destination authority's conditions in writing before any step that incurs real cost.

Check it before work starts: reconcile the data across every document in the bundle and confirm the destination authority's conditions in writing before any step that incurs real cost.

Book ahead at the Bangkok office, or send scans for review first and bring the originals in a single visit. This keeps clients travelling from nearby areas from making a second trip over missing paperwork.

Book ahead at the Khon Kaen office, or send scans for review first and bring the originals in a single visit. This keeps clients travelling from nearby areas from making a second trip over missing paperwork.

Book ahead at the Udon Thani office, or send scans for review first and bring the originals in a single visit. This keeps clients travelling from nearby areas from making a second trip over missing paperwork.

Book ahead at the Nong Khai office, or send scans for review first and bring the originals in a single visit. This keeps clients travelling from nearby areas from making a second trip over missing paperwork.

Monthly posting, trial balance, bank reconciliation and annual closing for filing with the Department of Business Development and the Revenue Department. By contrast, preparation and filing of monthly VAT and withholding-tax returns, with input and output tax reports. Both sit in accounting, tax, audit and payroll and share base documents, so planning them together avoids duplicate filings when the destination requires both.

Monthly posting, trial balance, bank reconciliation and annual closing for filing with the Department of Business Development and the Revenue Department. By contrast, preparation of profit estimates and corporate income-tax returns with tax-adjustment working papers. Both sit in accounting, tax, audit and payroll and share base documents, so planning them together avoids duplicate filings when the destination requires both.

Monthly posting, trial balance, bank reconciliation and annual closing for filing with the Department of Business Development and the Revenue Department. By contrast, preparation of the audit pack, coordination with the certified public accountant, and follow-through on findings until the statements are signed. Both sit in accounting, tax, audit and payroll and share base documents, so planning them together avoids duplicate filings when the destination requires both.

Monthly posting, trial balance, bank reconciliation and annual closing for filing with the Department of Business Development and the Revenue Department. By contrast, payroll calculation, payslips, employee withholding-tax remittance, and social-security registration and contributions. Both sit in accounting, tax, audit and payroll and share base documents, so planning them together avoids duplicate filings when the destination requires both.

Monthly posting, trial balance, bank reconciliation and annual closing for filing with the Department of Business Development and the Revenue Department. By contrast, chart-of-accounts design, integration of sales, inventory and banking into cloud accounting, and automation to remove duplicate data entry. Both sit in accounting, tax, audit and payroll and share base documents, so planning them together avoids duplicate filings when the destination requires both.

Follow the receiving authority. Thai documents used abroad normally need an English or local-language translation; foreign documents used in Thailand need a certified Thai translation.

In many cases yes, using a power of attorney that states the scope, with ID or passport copies of both parties. Some authorities still require the applicant in person for specific steps, so confirm before travelling.

Always obtain the reason in writing first, then check three things: name and date consistency across every document, a complete certification chain, and the destination authority's required format. Refile only after the order is corrected.

Documents are used only as required to complete the matter, are not disclosed to third parties without consent, and working files are returned or destroyed on request once the matter closes.