Accounting firmBangkokThai · English · French
Cloud-based accounting, tax filing & payroll for businesses in Thailand. All-inclusive pricing, zero hidden fees, 24/7 online access.
Service guide
Outsourced Accounting in Thailand.
Outsourced accounting in Thailand: what an external accounting back office covers, how it differs from bookkeeping alone, and when foreign-owned SMEs use it.
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Key facts
- What does outsourced accounting include?
- The whole accounting back office run by an external firm: monthly bookkeeping, financial statements, tax filings, and management reporting. Bookkeeping alone covers only the monthly books.
- Who is it for?
- Most often foreign-owned SMEs with real activity but no case for an in-house finance team. The firm replaces the function rather than supplementing it.
- Which deadlines does the firm manage?
- The fixed ones: the annual corporate income tax return within 150 days of the accounting period's close, the half-year return, and for VAT-registered companies the monthly VAT return within 15 days of the following month.
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What outsourced accounting in Thailand covers
Outsourced accounting in Thailand means an external firm runs the company's whole accounting function: the monthly books, the financial statements, the tax filings, and the management reporting that tells you how the business is doing. One engagement, one firm, one set of numbers.
That is the difference from bookkeeping, which covers the monthly books alone. A bookkeeping firm records what happened; an outsourced accounting firm also closes the periods, prepares the statements, files the returns, and reports back. If you only need the ledger maintained, bookkeeping is the cheaper engagement. If you have no finance function at all, outsourcing is the one that replaces it.
The filings behind the engagement are fixed by law. Thai and foreign companies carrying on business in Thailand are required to file corporate income tax returns, with the annual return due within 150 days of the closing date of the accounting period, and VAT-registered companies file the monthly VAT return within 15 days of the following month. The firm's job is to make those deadlines a routine instead of a scramble.
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GPS Accounting
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Accounting firmBangkokEnglish · Thai · Filipino · Swedish
Full service accountancy practice registered with the Thai Federation of Accounting Professions delivering accountancy and tax services in English.
Law firmBangkokEnglish · Thai · Spanish
Experts assisting clients in conducting their businesses and protecting their rights and investments in Thailand across a wide range of legal matters.
When foreign-owned SMEs choose it over hiring
The usual client is a foreign-owned SME with real activity but no case for a full finance team. The accounting records and the tax forms are in Thai, the rules are Thai, and a part-time foreign manager cannot review work they cannot read. Hiring one Thai accountant solves the language problem but creates a single point of failure: one resignation and the books stop.
An outsourced firm spreads that risk across a team, keeps cover during holidays and turnover, and scales the scope as the company grows. The trade-off is distance: the firm is not in your office, so the engagement lives or dies on the monthly reporting rhythm and how fast questions get answered. Companies with high transaction volume, an in-house CFO, or complex operations often do better hiring and keeping only the audit and specialist tax work external.
On cost, firms price outsourced accounting as a recurring monthly engagement scoped by transaction volume and filings. Compare what the monthly scope actually includes, not the headline fee: statement preparation, tax filings, and payroll are exactly the items that quietly sit outside a cheap quote.
How an outsourced accounting engagement runs
Scope and handover
The firm defines what it takes over: bookkeeping, statements, which tax filings, and whether payroll is included. Existing records, access, and prior filings are handed over and reviewed, and gaps in the old books are flagged before they become the new firm's problem.
Run the monthly cycle
Each month the firm records transactions, reconciles accounts, files the VAT return where the company is registered, handles withholding remittances, and sends a reporting pack so you see the numbers without asking.
Close the year
At year end the firm closes the books, prepares the annual financial statements, coordinates with the auditors, and supports the annual tax return through the 150-day filing window.
Review the scope annually
Once a year, engagement scope and fees are reviewed against how the company has changed: new VAT registrations, headcount growth, or activity that has outgrown the original package.
Choosing an outsourced accounting firm
Ask three things before signing. Who exactly works on your account, and what happens when that person leaves. What the monthly pack contains, and in which language. And where the boundaries sit: whether corporate tax filing, payroll, and statement preparation are inside the fee or billed as extras. Firms that answer all three in writing tend to be the ones that run clean engagements.
Payroll is the most common boundary dispute: some firms include it, many treat it as a separate service, and payroll firms exist precisely because it is a discipline of its own. There are many accounting firms in Thailand that offer the full back office; the fit question is scope and communication, not size.
This page is general information, not legal advice. Rules, deadlines, and procedures change; for a specific company, speak with a qualified professional.
Also listed
More firms that handle outsourced accounting
Every one of these is verified on Justenda and can take on outsourced accounting work in Thailand.
Accounting firmBangkokThai · English · French
Cloud-based accounting, tax filing & payroll for businesses in Thailand. All-inclusive pricing, zero hidden fees, 24/7 online access.
GPS Accounting
Free consultation
Accounting firmBangkokEnglish · Thai · Filipino · Swedish
Full service accountancy practice registered with the Thai Federation of Accounting Professions delivering accountancy and tax services in English.
Law firmBangkokEnglish · Thai · Spanish
Experts assisting clients in conducting their businesses and protecting their rights and investments in Thailand across a wide range of legal matters.
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Common questions
Frequently asked questions
- What is the difference between outsourced accounting and bookkeeping in Thailand?
- Bookkeeping is the monthly books: recording transactions and reconciling accounts. Outsourced accounting is the full external back office: the books plus period closes, financial statement preparation, tax filings, and management reporting. A company that already has an accountant may only need bookkeeping support; a company with no finance function usually needs the full engagement.
- When should a foreign-owned company outsource its accounting in Thailand?
- When there is real activity but not enough to justify a finance team, when the owner cannot review Thai-language records personally, or when a single in-house accountant would be a single point of failure. Companies with high transaction volume or an in-house CFO often do better hiring and keeping only audit and specialist tax work external.
- What tax filings does an outsourced accounting firm handle?
- Typically the monthly cycle of VAT returns, due within 15 days of the following month for VAT-registered companies, plus withholding tax remittances, and the corporate income tax calendar: the half-year return and the annual return due within 150 days of the accounting period's close. The exact list depends on the company's registrations, which the firm confirms at handover.
- How is outsourced accounting priced in Thailand?
- As a recurring monthly engagement, scoped by transaction volume and the filings involved. Fees vary widely with scope, so compare what each quote includes: statement preparation, tax filings, and payroll are the items most often billed as extras. A firm quotes a figure for a specific company after seeing the volume.
All firms
Every firm that can help you with outsourced accounting
Accounting firmBangkokThai · English · French
Cloud-based accounting, tax filing & payroll for businesses in Thailand. All-inclusive pricing, zero hidden fees, 24/7 online access.
GPS Accounting
Free consultation
Accounting firmBangkokEnglish · Thai · Filipino · Swedish
Full service accountancy practice registered with the Thai Federation of Accounting Professions delivering accountancy and tax services in English.
Law firmBangkokEnglish · Thai · Spanish
Experts assisting clients in conducting their businesses and protecting their rights and investments in Thailand across a wide range of legal matters.
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