Revenue Code
Governs corporate and personal income tax, VAT and withholding tax, with surcharges and penalties for late filing.
Northern Thailand — Chiang Rai
Tax, Accounting & Employer Compliance in Chiang Rai
Keeping every statutory tax and accounting deadline under control.
Why Chiang Rai matters are different
Chiang Rai borders both Myanmar and Lao PDR and combines border trade, highland agriculture, tourism and a growing foreign-resident community. Legal work includes cross-border trade and transport contracts, land disputes in use-restricted areas, and civil-status matters for people with incomplete registry records, which require careful historical document review.
A company registered in Thailand carries layered statutory duties: monthly filings with the Revenue Department, social security contributions, bookkeeping under the Accounting Act, and annual financial statements submitted to the Department of Business Development. We handle these alongside the legal work so that everything filed with the authorities is consistent, reducing exposure to surcharges arising from late filing or mismatched figures.
- Border trade routinely involves documents in several languages and systems, so contracts should state which language version prevails on conflict.
- Many highland plots lie in use-restricted zones, so title type and boundaries must be verified before price negotiations.
- Correcting civil registry entries relies on historical documents and witnesses, taking longer than ordinary registration work.
- Cross-border transport raises carrier liability and insurance points that must be written into the contract, or in-transit loss becomes a dispute that is hard to prove.
Courts and authorities in Chiang Rai
Jurisdiction and filing requirements should be confirmed for each matter, because practice and required attachments differ between offices.
| Court / authority | What it handles |
|---|---|
| Chiang Rai Provincial Court and Chiang Rai Municipal Court | Civil and criminal cases within the province |
| Chiang Rai Juvenile and Family Court | Family, juvenile and minors’ status matters |
| Labour Court Region 5 | Labour cases in the upper north |
| Chiang Rai Provincial Land Office and branch offices | Land registration and verification of title types |
| Chiang Rai Immigration Office | Foreign-national matters, extensions of stay and border checkpoint work |
| Chiang Rai Legal Execution Office | Enforcement of judgments in the province |
| District offices in Chiang Rai (civil registration) | Civil registration, marriage registration and correction of registry entries |
| Chiang Rai Provincial Commercial Office | Local company registration services |
What we handle in Chiang Rai
- VAT registration and employer registration with the Social Security Office
- Monthly withholding tax and VAT filings
- Closing the books, preparing financial statements and liaising with the auditor
- Half-year and annual corporate income tax filings
- Payroll, employee income tax and social security contributions
- Advice on cross-border transactions and double tax treaties
- Responding to tax assessments and handling appeals
The local process, step by step
- 1Initial case assessment of the business structure and existing records
- 2Building a monthly and annual compliance calendar for the client
- 3Collecting documents each cycle, bookkeeping and checking tax invoices
- 4Filing on time and returning filing evidence to the client’s records
- 5Annual review with the auditor before the financial statements are filed
Documents to prepare
- Company affidavit, shareholder list and memorandum of association
- Input and output tax invoices and receipts for the period
- Company bank statements
- Employment contracts and payroll data
- Commercial contracts affecting revenue and expense recognition
Points to watch
- Late filings attract penalties and surcharges under the Revenue Code and are not automatically waived.
- Expenses without supporting documents may be disallowed on audit.
- Payments abroad usually carry withholding obligations; check the applicable tax treaty before remitting.
- Assessment outcomes rest with the revenue officer; we cannot guarantee the result of an appeal.
Typical timeframe
Monthly filings follow the Revenue Department’s deadlines for each cycle, while annual closing and submission of financial statements to the Department of Business Development follow the statutory windows after the accounting year end. Your company’s specific dates are set out in advance in the compliance calendar.
Timeframes are indicative and depend on the court calendar and the authority handling the matter in Chiang Rai.
Areas of Chiang Rai we regularly serve
เมืองเชียงรายแม่สายเชียงแสนเชียงของแม่จันพานเทิงแม่ฟ้าหลวงเวียงป่าเป้าป่าแดด
Laws that govern this matter — Chiang Rai
Summarised for general understanding only. The application of each provision depends on the facts of your case.
Accounting Act B.E. 2543 (2000)
Sets duties to keep accounts, appoint a bookkeeper and retain accounting records.
Thailand’s double tax agreements
Relevant to tax residence and double taxation on cross-border income.
Example situations and how they are handled — Chiang Rai
These are constructed examples used to explain procedure. They are not client matters, and no outcome is implied or guaranteed.
Illustrative scenario: an invitation letter from the Revenue Department
Situation: A company is asked to explain historical expense items.
Usual approach: Assemble documents item by item and period by period, and reconcile tax invoices, contracts and payment trails before attending. (Hypothetical.)
Advice for your specific situation — Chiang Rai
Foreigners earning income in Thailand
- Days present in Thailand in a tax year affect residence status — keep an entry/exit log.
- Foreign tax documents usually need certified translation before filing in Thailand.
SME operators
- Separate personal and business accounts from day one — it greatly simplifies audits.
- Check withholding duties on every service payment — a frequent assessment trigger.
Every matter — what to do in the first 7 days
- Gather every original document in one place, keep scanned copies, and note the date you received each one.
- Write a dated timeline — the date you received a notice or learned of the event usually starts the limitation or appeal clock.
- Do not sign a settlement, debt acknowledgement or withdrawal before a lawyer reviews it — it may extinguish existing rights.
- Preserve digital evidence unaltered (full screenshots, original files, emails with headers) — edited files are easy to challenge.
Questions people in Chiang Rai ask
A bilingual border-trade contract has conflicting wording — which version governs?
Whichever the contract designates. Without a clause, it becomes a question of interpreting the parties’ intent — slow and uncertain. The fix is a clause naming the governing version and treating the other as a convenience translation.
Buying highland land — what needs special checking?
Verify whether the title type is transferable, whether the plot lies in a use-restricted zone, how actual boundaries compare with the cadastral map, and whether access is a legal right or merely permitted by consent — these affect both building and resale.
Civil registry records show inconsistent information — can they be corrected?
Yes, through the registrar’s procedure, supported by historical evidence and sometimes witnesses. Where evidence is insufficient, a court order confirming the facts may be needed first, so all older documents should be gathered before starting.
When must a company register for VAT?
When turnover reaches the threshold set by the Revenue Code, or where the activity requires registration by law. Some companies register voluntarily before the threshold to claim input tax; this should be weighed against the customer and supplier mix.
Does a company with no revenue still have to file?
Yes. Even with no movement the company must file for each period and submit annual financial statements. Stopping filings accumulates penalties and can affect the company’s standing.
Can you work with our existing auditor?
Yes. We commonly prepare and assemble the records for your certified auditor to examine, keeping the auditor’s opinion independent as professional standards require.
Same service in other provinces
Tax, Accounting & Employer Compliance — BangkokTax, Accounting & Employer Compliance — Chiang MaiTax, Accounting & Employer Compliance — PhuketTax, Accounting & Employer Compliance — ChonburiTax, Accounting & Employer Compliance — Khon KaenTax, Accounting & Employer Compliance — Udon ThaniTax, Accounting & Employer Compliance — Nakhon RatchasimaTax, Accounting & Employer Compliance — SongkhlaTax, Accounting & Employer Compliance — Surat ThaniTax, Accounting & Employer Compliance — RayongTax, Accounting & Employer Compliance — NonthaburiTax, Accounting & Employer Compliance — nationwide
Other legal services in Chiang Rai
Litigation & Court Representation — Chiang RaiCivil, criminal, labour, family, succession and land disputesCorporate & Commercial — Chiang RaiIncorporation, contracts, foreign business, BOI and complianceImmigration & Foreign Nationals — Chiang RaiVisas, work permits, residency and lawful statusIntellectual Property — Chiang RaiTrademarks, copyright, patents and enforcementLand & Real Estate — Chiang RaiTitle due diligence, sale, lease and transfer at the Land OfficeFamily & Succession — Chiang RaiMarriage, divorce, custody, wills and estate administrationMediation, Arbitration & Enforcement — Chiang RaiResolving disputes outside court and making awards effectiveNotarial Services & International Documents — Chiang RaiSignature and document certification, translation, consular and embassy legalisation
Discuss your Chiang Rai matter with an attorney
Tell us the facts and we will explain which authority applies, what documents are needed and the realistic timeframe.