Accounting and tax in Thailand: questions and answers
1026 answered questions on VAT registration and monthly returns, withholding tax and certificates, corporate and personal income tax, payroll and social security, annual audit and DBD e-Filing, e-Tax Invoice, and double tax agreements. General information only, not a case-specific tax opinion; fees are quoted by our staff after scoping.
value added tax (VAT) (152)
- What documents are required for VAT registration (form PP.01)?
- What is the step-by-step process for VAT registration (form PP.01)?
- How long does VAT registration (form PP.01) normally take?
- Which authority handles VAT registration (form PP.01)?
- What conditions must be met before VAT registration (form PP.01)?
- Why is VAT registration (form PP.01) most often rejected or returned?
- How far in advance should VAT registration (form PP.01) be arranged?
- Can someone else act on your behalf for VAT registration (form PP.01), and what power of attorney is needed?
- What is most commonly overlooked in VAT registration (form PP.01)?
- Does VAT registration (form PP.01) require additional translation or certification?
- What happens if a document for VAT registration (form PP.01) is lost or expired?
- How does VAT registration (form PP.01) differ for foreign nationals compared with Thai nationals?
- Can VAT registration (form PP.01) be completed online?
- Is personal appearance required for VAT registration (form PP.01)?
- Is there a legitimate express route for VAT registration (form PP.01)?
- How long does the result of VAT registration (form PP.01) remain valid?
- How is VAT registration (form PP.01) coordinated with the receiving authority?
- Does VAT registration (form PP.01) differ between Bangkok and the provinces?
- If VAT registration (form PP.01) is refused, when can it be filed again?
- Which parts of VAT registration (form PP.01) can IVC handle for you?
withholding tax (152)
- What documents are required for withholding tax on service fees and rent?
- What is the step-by-step process for withholding tax on service fees and rent?
- How long does withholding tax on service fees and rent normally take?
- Which authority handles withholding tax on service fees and rent?
- What conditions must be met before withholding tax on service fees and rent?
- Why is withholding tax on service fees and rent most often rejected or returned?
- How far in advance should withholding tax on service fees and rent be arranged?
- Can someone else act on your behalf for withholding tax on service fees and rent, and what power of attorney is needed?
- What is most commonly overlooked in withholding tax on service fees and rent?
- Does withholding tax on service fees and rent require additional translation or certification?
- What happens if a document for withholding tax on service fees and rent is lost or expired?
- How does withholding tax on service fees and rent differ for foreign nationals compared with Thai nationals?
- Can withholding tax on service fees and rent be completed online?
- Is personal appearance required for withholding tax on service fees and rent?
- Is there a legitimate express route for withholding tax on service fees and rent?
- How long does the result of withholding tax on service fees and rent remain valid?
- How is withholding tax on service fees and rent coordinated with the receiving authority?
- Does withholding tax on service fees and rent differ between Bangkok and the provinces?
- If withholding tax on service fees and rent is refused, when can it be filed again?
- Which parts of withholding tax on service fees and rent can IVC handle for you?
corporate income tax (152)
- What documents are required for the annual corporate income tax return (PND.50)?
- What is the step-by-step process for the annual corporate income tax return (PND.50)?
- How long does the annual corporate income tax return (PND.50) normally take?
- Which authority handles the annual corporate income tax return (PND.50)?
- What conditions must be met before the annual corporate income tax return (PND.50)?
- Why is the annual corporate income tax return (PND.50) most often rejected or returned?
- How far in advance should the annual corporate income tax return (PND.50) be arranged?
- Can someone else act on your behalf for the annual corporate income tax return (PND.50), and what power of attorney is needed?
- What is most commonly overlooked in the annual corporate income tax return (PND.50)?
- Does the annual corporate income tax return (PND.50) require additional translation or certification?
- What happens if a document for the annual corporate income tax return (PND.50) is lost or expired?
- How does the annual corporate income tax return (PND.50) differ for foreign nationals compared with Thai nationals?
- Can the annual corporate income tax return (PND.50) be completed online?
- Is personal appearance required for the annual corporate income tax return (PND.50)?
- Is there a legitimate express route for the annual corporate income tax return (PND.50)?
- How long does the result of the annual corporate income tax return (PND.50) remain valid?
- How is the annual corporate income tax return (PND.50) coordinated with the receiving authority?
- Does the annual corporate income tax return (PND.50) differ between Bangkok and the provinces?
- If the annual corporate income tax return (PND.50) is refused, when can it be filed again?
- Which parts of the annual corporate income tax return (PND.50) can IVC handle for you?
personal income tax for individuals and foreign nationals (152)
- What documents are required for personal income tax for foreigners working in Thailand?
- What is the step-by-step process for personal income tax for foreigners working in Thailand?
- How long does personal income tax for foreigners working in Thailand normally take?
- Which authority handles personal income tax for foreigners working in Thailand?
- What conditions must be met before personal income tax for foreigners working in Thailand?
- Why is personal income tax for foreigners working in Thailand most often rejected or returned?
- How far in advance should personal income tax for foreigners working in Thailand be arranged?
- Can someone else act on your behalf for personal income tax for foreigners working in Thailand, and what power of attorney is needed?
- What is most commonly overlooked in personal income tax for foreigners working in Thailand?
- Does personal income tax for foreigners working in Thailand require additional translation or certification?
- What happens if a document for personal income tax for foreigners working in Thailand is lost or expired?
- How does personal income tax for foreigners working in Thailand differ for foreign nationals compared with Thai nationals?
- Can personal income tax for foreigners working in Thailand be completed online?
- Is personal appearance required for personal income tax for foreigners working in Thailand?
- Is there a legitimate express route for personal income tax for foreigners working in Thailand?
- How long does the result of personal income tax for foreigners working in Thailand remain valid?
- How is personal income tax for foreigners working in Thailand coordinated with the receiving authority?
- Does personal income tax for foreigners working in Thailand differ between Bangkok and the provinces?
- If personal income tax for foreigners working in Thailand is refused, when can it be filed again?
- Which parts of personal income tax for foreigners working in Thailand can IVC handle for you?
payroll, employee tax and social security (114)
- What documents are required for running payroll and withholding employee tax?
- What is the step-by-step process for running payroll and withholding employee tax?
- How long does running payroll and withholding employee tax normally take?
- Which authority handles running payroll and withholding employee tax?
- What conditions must be met before running payroll and withholding employee tax?
- Why is running payroll and withholding employee tax most often rejected or returned?
- How far in advance should running payroll and withholding employee tax be arranged?
- Can someone else act on your behalf for running payroll and withholding employee tax, and what power of attorney is needed?
- What is most commonly overlooked in running payroll and withholding employee tax?
- Does running payroll and withholding employee tax require additional translation or certification?
- What happens if a document for running payroll and withholding employee tax is lost or expired?
- How does running payroll and withholding employee tax differ for foreign nationals compared with Thai nationals?
- Can running payroll and withholding employee tax be completed online?
- Is personal appearance required for running payroll and withholding employee tax?
- Is there a legitimate express route for running payroll and withholding employee tax?
- How long does the result of running payroll and withholding employee tax remain valid?
- How is running payroll and withholding employee tax coordinated with the receiving authority?
- Does running payroll and withholding employee tax differ between Bangkok and the provinces?
- If running payroll and withholding employee tax is refused, when can it be filed again?
- Which parts of running payroll and withholding employee tax can IVC handle for you?
financial statements, audit and DBD filing (152)
- What documents are required for preparing financial statements and the annual closing?
- What is the step-by-step process for preparing financial statements and the annual closing?
- How long does preparing financial statements and the annual closing normally take?
- Which authority handles preparing financial statements and the annual closing?
- What conditions must be met before preparing financial statements and the annual closing?
- Why is preparing financial statements and the annual closing most often rejected or returned?
- How far in advance should preparing financial statements and the annual closing be arranged?
- Can someone else act on your behalf for preparing financial statements and the annual closing, and what power of attorney is needed?
- What is most commonly overlooked in preparing financial statements and the annual closing?
- Does preparing financial statements and the annual closing require additional translation or certification?
- What happens if a document for preparing financial statements and the annual closing is lost or expired?
- How does preparing financial statements and the annual closing differ for foreign nationals compared with Thai nationals?
- Can preparing financial statements and the annual closing be completed online?
- Is personal appearance required for preparing financial statements and the annual closing?
- Is there a legitimate express route for preparing financial statements and the annual closing?
- How long does the result of preparing financial statements and the annual closing remain valid?
- How is preparing financial statements and the annual closing coordinated with the receiving authority?
- Does preparing financial statements and the annual closing differ between Bangkok and the provinces?
- If preparing financial statements and the annual closing is refused, when can it be filed again?
- Which parts of preparing financial statements and the annual closing can IVC handle for you?
e-Tax Invoice, e-Receipt and e-Filing (76)
- What documents are required for e-Tax Invoice and e-Receipt?
- What is the step-by-step process for e-Tax Invoice and e-Receipt?
- How long does e-Tax Invoice and e-Receipt normally take?
- Which authority handles e-Tax Invoice and e-Receipt?
- What conditions must be met before e-Tax Invoice and e-Receipt?
- Why is e-Tax Invoice and e-Receipt most often rejected or returned?
- How far in advance should e-Tax Invoice and e-Receipt be arranged?
- Can someone else act on your behalf for e-Tax Invoice and e-Receipt, and what power of attorney is needed?
- What is most commonly overlooked in e-Tax Invoice and e-Receipt?
- Does e-Tax Invoice and e-Receipt require additional translation or certification?
- What happens if a document for e-Tax Invoice and e-Receipt is lost or expired?
- How does e-Tax Invoice and e-Receipt differ for foreign nationals compared with Thai nationals?
- Can e-Tax Invoice and e-Receipt be completed online?
- Is personal appearance required for e-Tax Invoice and e-Receipt?
- Is there a legitimate express route for e-Tax Invoice and e-Receipt?
- How long does the result of e-Tax Invoice and e-Receipt remain valid?
- How is e-Tax Invoice and e-Receipt coordinated with the receiving authority?
- Does e-Tax Invoice and e-Receipt differ between Bangkok and the provinces?
- If e-Tax Invoice and e-Receipt is refused, when can it be filed again?
- Which parts of e-Tax Invoice and e-Receipt can IVC handle for you?
double tax agreements and tax residence (76)
- What documents are required for using a double tax agreement to reduce withholding tax?
- What is the step-by-step process for using a double tax agreement to reduce withholding tax?
- How long does using a double tax agreement to reduce withholding tax normally take?
- Which authority handles using a double tax agreement to reduce withholding tax?
- What conditions must be met before using a double tax agreement to reduce withholding tax?
- Why is using a double tax agreement to reduce withholding tax most often rejected or returned?
- How far in advance should using a double tax agreement to reduce withholding tax be arranged?
- Can someone else act on your behalf for using a double tax agreement to reduce withholding tax, and what power of attorney is needed?
- What is most commonly overlooked in using a double tax agreement to reduce withholding tax?
- Does using a double tax agreement to reduce withholding tax require additional translation or certification?
- What happens if a document for using a double tax agreement to reduce withholding tax is lost or expired?
- How does using a double tax agreement to reduce withholding tax differ for foreign nationals compared with Thai nationals?
- Can using a double tax agreement to reduce withholding tax be completed online?
- Is personal appearance required for using a double tax agreement to reduce withholding tax?
- Is there a legitimate express route for using a double tax agreement to reduce withholding tax?
- How long does the result of using a double tax agreement to reduce withholding tax remain valid?
- How is using a double tax agreement to reduce withholding tax coordinated with the receiving authority?
- Does using a double tax agreement to reduce withholding tax differ between Bangkok and the provinces?
- If using a double tax agreement to reduce withholding tax is refused, when can it be filed again?
- Which parts of using a double tax agreement to reduce withholding tax can IVC handle for you?
Englishอ่านฉบับภาษาไทย
Practical playbook: Accounting, Tax and Payroll in Thailand
A Thai company files monthly and annual returns on fixed statutory deadlines. The work is driven by the calendar: VAT and withholding tax each month, social security each month, audited financial statements and the corporate income tax return each year.
Documents to prepare
- Company affidavit, VAT certificate (Phor.Phor.20) and tax ID
- Sales and purchase tax invoices for the period, with receipts
- Bank statements for every company account
- Payroll register, employment contracts and social security registrations
- Prior-year audited financial statements and tax filings
Steps and method
1. Scope and system setup
Map the chart of accounts, VAT status, withholding categories and payroll cycle to the company's actual transactions.
Typical timeframe: 1–5 business days
2. Monthly bookkeeping
Record transactions, reconcile bank accounts and prepare withholding tax certificates for suppliers.
Typical timeframe: Monthly cycle
3. Monthly filings
File withholding tax (PND.3/53/54), VAT (PP.30/PP.36) and social security contributions within their statutory deadlines.
Typical timeframe: Monthly, by the filing deadline
4. Year-end close and audit
Prepare financial statements, work with the licensed auditor, then file with DBD and the Revenue Department (PND.50 and the half-year PND.51).
Typical timeframe: Annual cycle
Consultant tips
- Keep original tax invoices — an input VAT claim depends on a compliant tax invoice, not on the payment record alone.
- Issue withholding tax certificates at the time of payment; suppliers need them to claim their credit.
- Tell your accountant before a transaction is unusual (related-party, cross-border, share transfer) rather than after it is booked.
Pitfalls to avoid
- Late filing exposes the company to surcharges and penalties applied per return, even when tax is nil.
- Registering for VAT is mandatory once the turnover threshold is passed; waiting for a Revenue Department notice is not an option.
- Cash-basis records without supporting documents will not survive a Revenue Department review.
Official references
If you would rather not handle the paperwork yourself, the iVC team can run the whole file end to end — document review, translation, certification, submission and follow-up. Contact us by LINE @iVisa or call +66 80-557-8887 so we can assess your case before any work starts.
In-house accountant vs outsourced accounting firm
The difference is continuity, who owns the filing deadlines, and access to a licensed auditor.
| Aspect | In-house accountant | Outsourced firm |
|---|---|---|
| Scope | Day-to-day work as assigned | Monthly and annual closing and filing on the tax calendar |
| Continuity | Stops when the employee leaves | Backup staff and handover procedures |
| Specialist depth | Depends on the individual's experience | Registered bookkeepers plus coordination with a licensed auditor |
| Watch out for | Backlogs build up with no second reviewer | Documents must reach the firm each cycle or filings slip |
Doing it yourself vs having iVC manage the whole process
Both routes are valid. They differ in the time you spend, the risk of documents being returned, and whether an adviser reviews everything before submission.
| Aspect | Do it yourself | Managed by iVC |
|---|---|---|
| Pre-submission review | You check against the agency's published requirements | An adviser checks each document against the destination's rules first |
| Your time | You travel, queue and follow up yourself | We file and follow up; you receive progress updates |
| Rejection risk | Common causes: name spelling mismatch, expired documents, wrong certification order | We check the usual rejection triggers at source and fix them first |
| Specialist knowledge | You research each agency's rules yourself | A team with 15+ years of casework advises throughout |
| If something goes wrong | You restart the steps yourself | We assess the options and plan the fix immediately |
We work as advisers, not just a document courier
More than 15 years of casework (since 2011) in translation, certification and visa document preparation shows us the patterns behind repeated rejections, so we plan around them from the start.
- Case assessment first
- We review the profile, destination country and receiving authority before recommending a certification route.
- A document plan per person
- We sequence what must be re-issued, translated first, and certified in which order.
- Risks flagged early
- We point out the usual rejection triggers, such as name spelling that differs from the passport or document age limits.
- Follow-through to the end
- Regular progress updates, and immediate options if the authority requests more documents.
- Advice after completion
- The same set is often reused in the next step; we check whether it still qualifies or needs re-issuing.
If you would rather not chase each step yourself, send the case details for an assessment first, then decide.