Bookkeeping services in Thailand.
Clean books make every other filing easier: VAT refunds clear faster, audits resolve quicker, tax positions are defensible, management can read the numbers. We keep them clean.
What does Thai bookkeeping require?
Under the Accounting Act B.E. 2543, every company has to keep accounts from the day it is registered. It must appoint a qualified bookkeeper who is registered with the Federation of Accounting Professions (FAP), maintain those records in the Thai language and in baht, and retain them for at least five years. The rules are not optional, and the Revenue Department expects them to be met from day one.
The books themselves follow Thai Financial Reporting Standards. Listed and publicly accountable entities apply full TFRS; private SMEs apply the lighter TFRS for NPAEs. Whichever framework applies, clean and consistent records make a real difference — audits close faster, VAT refunds clear sooner, and tax positions are far easier to defend.
The records behind a compliant set of books.
Bookkeeping is more than data entry. It is a structured set of ledgers, reconciliations and source documents that has to hold up to an auditor and the Revenue Department alike.
General ledger & monthly close
The core ledger maintained throughout the period and formally closed each month so management accounts are timely.
Bank, credit-card & petty-cash reconciliation
Every cash and card account reconciled to statements monthly, with discrepancies flagged and resolved early.
Sales & purchase ledgers
Customer and supplier ledgers kept current, with VAT input and output reports prepared from them.
Fixed-asset & inventory registers
Assets tracked with depreciation schedules and stock recorded so the balance sheet stays accurate.
Source-document management
Invoices, withholding-tax certificates and contracts captured, filed and cross-referenced to the ledger.
Bilingual reporting
Records kept to Thai standards and reported in both Thai and English, with terminology you can map to home-country accounts.
What you must keep, and for how long.
The law is specific about which documents support the accounts and how long they have to remain available. Getting this right is what keeps an audit straightforward.
Records you must keep
- Approved payment vouchers and expense claims
- Bank statements, deposit slips and advices
- Sales and purchase invoices, and VAT tax invoices
- Withholding-tax certificates
- Contracts and agreements
- The general ledger and financial statements
How long, and where
- At least five years from the last entry under the Accounting Act
- Extendable to seven years by the Revenue Department during an investigation
- Kept in Thailand and readily accessible
- Electronic records allowed if they can be reproduced and are backed up
- Foreign-language documents accompanied by Thai translations
The framework, and who has to sign off on it.
Which standard applies depends on the company. TFRS for NPAEs is the SME framework and covers most privately held businesses; full TFRS applies to listed and publicly accountable entities. Both are issued by the Federation of Accounting Professions, and both expect statements prepared in baht and records maintained in Thai.
People matter as much as the framework. The appointed bookkeeper must be FAP-registered and complete the required continuing-education hours each year — it is a regulated role, not an informal one. Where clean books really pay off is at year end: they lower the cost of the annual audit and speed up VAT refunds.
- TFRS for NPAEs — the SME framework for private companies
- Full TFRS — for listed and publicly accountable entities
- Both issued by the Federation of Accounting Professions
- Bookkeeper FAP-registered with annual continuing-education hours
- Statements in baht, records in Thai
How bookkeeping runs, month to month.
A steady monthly rhythm keeps the books current and feeds every downstream filing without a scramble at deadline.
Setup
Chart of accounts agreed, opening balances reconciled, and your records migrated from any prior provider.
Daily intake
Source documents captured within one to two business days, so nothing piles up at the end of the month.
Monthly reconciliation
Bank, credit-card and petty-cash accounts reconciled, with any discrepancies flagged for resolution.
Monthly close
Books closed for the period and management accounts produced so you can read the numbers promptly.
Hand-off
Closing balances feed the VAT (PP30), withholding (PND 1/3/53) and social-security filings and the year-end audit.
How we keep your books.
Thai accounting follows the Thai Financial Reporting Standards (TFRS), which align broadly with IFRS but with local specifics around revenue recognition, withholding taxes, and VAT treatment. Foreign owners often find the books accurate in Thai but unreadable in any other language.
We bookkeep to Thai standards — because that's what the Revenue Department and the auditor need — and we report to you in English with consistent terminology you can map back to your home-country accounts. Bank reconciliations are run monthly; petty cash and credit-card statements are reconciled; suppliers and customers are kept tidy.
Bookkeeping is rarely sold alone. It pairs with our accounting & tax package — and most clients take the bundled version.
What we do
- Daily / weekly invoice and receipt capture
- General ledger maintenance
- Bank reconciliation (monthly)
- Petty cash and credit-card reconciliation
- Supplier and customer ledger maintenance
- Inventory and fixed-asset register
- Monthly close
- Bilingual reporting (English and Thai)
What you get
- Books kept clean enough that audit and VAT filings happen without rework
- Monthly close so management accounts are timely
- English chart of accounts available alongside Thai
How we work
Setup
Chart of accounts agreed, opening balances reconciled, system migration if changing from another provider.
Daily intake
Documents come to us by email or shared drive; entries are captured within 1–2 business days.
Monthly reconciliation
Bank statements, credit cards, and petty cash reconciled monthly. Discrepancies flagged early.
Monthly close
Books closed; management accounts produced; balances handed over for VAT, PND, and SSO filings.
Speak with our team
Send a message — typical response within one hour during office hours.
WhatsApp +66 95 332 2447 Send an Enquiry Call +66 2 026 0600Frequently asked
Do you use Thai accounting software or international platforms?
We use Thai-standard software so the output is directly acceptable to auditors and the Revenue Department.
How quickly are documents booked?
Standard turnaround is 1–2 business days. Tighter cycles available on a higher-tier retainer.
Can you do bookkeeping for a foreign-domiciled subsidiary?
We bookkeep for the Thai entity. Group-level bookkeeping for foreign entities is outside our scope, but we hand over a clean monthly pack that consolidates easily.
Is bookkeeping included in the accounting & tax package?
Yes — that's most of what the monthly accounting fee covers. Bookkeeping standalone is for clients who already have a tax provider in place.
Reviewed by the Khonsu Legal team · 1 July 2026
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