Corporate Tax Planning & Filing
วางแผนและยื่นภาษีนิติบุคคล · § Tax
Quick Answer
We review figures before mid-year and year-end so the PND.51 estimate is reasonable, flag non-deductible items, and prepare PND.50 with supporting schedules. Planning stays strictly within the law.
Timeline: Mid-year review about a month before the PND.51 deadline · PND.50 prepared alongside year-end close · filed within 150 days of year-end.
Official fee: No government filing fee. Under-estimating half-year profit beyond the threshold or filing late can trigger surcharges and penalties; confirm current rules with the Revenue Department.
Legal Basis
The corporate income tax provisions of the Revenue Code require PND.51 for the half-year within two months after the sixth month, and PND.50 within 150 days after the fiscal year-end, together with rules on deductible and non-deductible expenses.
Who Needs This
Profitable companies that want to know their tax burden in advance, BOI-promoted companies that must separate exempt income, and businesses transacting with related companies abroad.
Required Documents
- Latest trial balance or profit-and-loss report
- Details of large expenses such as entertainment, donations, director loan interest
- Fixed-asset register and depreciation method
- BOI certificate and conditions (if any)
- Contracts with related or foreign companies
Common Pitfalls
- Grossly under-estimating half-year profit, leading to surcharges at year-end
- Booking directors' personal expenses as company costs
- Entertainment or donations exceeding the deductible ceiling
- BOI companies failing to separate promoted and non-promoted income
Typical Use-cases
- A fast-growing company that needs to reserve cash for tax
- A foreign subsidiary paying service fees or royalties to its parent
- A first-year BOI company that must file separated schedules
FAQ
- Do SMEs get a reduced rate?
- Companies meeting the SME conditions in the Revenue Code use a tiered rate. Capital and revenue conditions can change, so check with the Revenue Department each year before filing.
- Does a loss-making company still file?
- Yes. PND.50 is filed every year even with a loss, and net losses can be carried forward for the period the law allows.
- Do payments abroad require withholding?
- Certain payments to foreign companies require withholding and a PND.54 filing; double-tax treaties may reduce the rate. We check the income type and the applicable treaty.
- Do we need transfer-pricing documentation?
- Companies with related-party transactions above the revenue threshold must file an annual disclosure. We check whether you fall within scope and prepare the supporting data.
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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.
