Monthly Bookkeeping
ทำบัญชีรายเดือน (Bookkeeping) · § Bookkeeping
Quick Answer
We record your monthly documents, reconcile bank accounts, prepare PP.30 and PND.1/3/53 on time, and send a profit-and-loss summary in Thai or English. Fees are quoted after we see your actual transaction volume.
Timeline: Send documents early the following month · WHT forms due by the 7th (e-filing extensions per Revenue Department notices) · PP.30 due by the 15th · actual turnaround depends on how complete your documents are.
Official fee: There is no government filing fee, but late filing or payment triggers surcharges and penalties under the Revenue Code. Check current rates with the Revenue Department.
Legal Basis
The Accounting Act B.E. 2543 requires juristic partnerships and limited companies to keep books under Thai financial reporting standards and to retain books and supporting documents for at least five years. The Revenue Code sets the monthly VAT and withholding-tax filing duties.
Who Needs This
Newly registered companies without an in-house accountant, online sellers with high transaction volume, foreign-owned companies that need English reporting, and owners who want real monthly numbers instead of waiting for year-end.
Required Documents
- Sales and purchase tax invoices for the month (originals or e-Tax Invoice files)
- Statements for every company bank account
- Expense receipts plus the withholding-tax certificates you issued
- Sales reports from online platforms or POS (if any)
- New contracts signed that month, e.g. leases or service agreements
Common Pitfalls
- Tax invoices missing legally required particulars may not be usable as input-tax credit
- Forgetting to withhold tax on service payments makes the company jointly liable
- Paying company costs from personal accounts makes expenses hard to prove in an audit
- VAT registrants must still file PP.30 in months with no sales
Typical Use-cases
- A new company registered at a virtual office that needs books from month one
- A multi-platform online store reconciling payouts against sales
- A company whose shareholders live abroad and need English reports
- A business switching accountants mid-year with back-work to clean up
FAQ
- Is outsourcing worth it for a very small company?
- When monthly volume is modest, an accounting firm is usually more economical than a full-time hire, because you get both a bookkeeper and a reviewer for tax forms. Consider an in-house team once volume grows.
- Which accounting software do I need?
- We work with the software you already use. If you have none, we recommend one based on your invoice volume and whether you need to issue e-Tax Invoices.
- I haven't filed for several months — what now?
- Gather documents and file the overdue months quickly, because surcharges accrue with time. We prioritise the months and calculate what is due; any penalty reduction follows Revenue Department rules.
- Can I send documents online?
- Yes, by LINE or email each month. Keep the originals at your company as the law requires.
Other Accounting & Payroll Services
Request a quote — Call 083-2494999 · LINE @NYC168 · contact@nyclegal.co.th
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Official sources — accounting, tax, social security
The information on this page follows the official sources below. Always check the latest version before you file.
- Revenue Department — Revenue Code, income tax, VAT— Revenue Department
- Social Security Office— Social Security Office
- Department of Business Development — company registration— Department of Business Development
- Office of the Council of State — Thai law database— Office of the Council of State
- Board of Investment (BOI) / LTR Visa— Thailand Board of Investment
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Frequently asked questions
- Can a foreigner own 100% of a Thai company?
- Full foreign ownership is possible for some activities, but there is no blanket permission. Check the Foreign Business Act definition, actual activities, sector-specific restrictions and any required licence or certificate. BOI promotion and treaty rights apply only within their approved scope; they do not automatically confer land rights, visas or work permits. Do not use nominee shareholders. Verify the proposed structure with DBD.
- What is the minimum registered capital for a Thai company?
- Do not apply one capital figure to every incorporation, foreign-business licence, visa or work-permit application. Registered capital and paid-up capital are different, and the applicable requirements depend on actual activities, ownership, permit category and any BOI or treaty conditions. Capital is a company funding requirement, not our service fee. Confirm the relevant criteria with DBD, the Department of Employment and Immigration before choosing the structure. Ask our team for a quotation for the agreed work.
- How long does company registration take?
- Separate document preparation, name reservation, signatures and DBD review from VAT registration, Social Security and bank onboarding. Timing depends on the filing channel, complete documents and any requests for corrections or additional evidence; no completion date is guaranteed. Ask our team for a quotation and a planning estimate after the proposed structure and documents have been reviewed.
- What ongoing accounting obligations does a Thai company have?
- A Thai limited company keeps statutory books and prepares audited annual statements even without trading. Tax returns depend on its payments, VAT status, accounting period and taxpayer category: PND1, PND3 and PND53 are not universal monthly returns for every company, and PP30 applies to VAT-registered businesses, including nil-return months while registration remains active. Check PND50, PND51 and each filing deadline with RD; check annual statements and shareholder filings separately with DBD.
