Sole trader or limited company in Thailand: how to decide
Comparing trading personally with incorporating a Thai limited company: tax, liability, credibility, annual upkeep and the point at which switching makes sense.
Zura Labs & Business Hub Co., Ltd.
Trading personally is easy to start with light paperwork, but you pay progressive personal income tax and carry unlimited liability for business debts. A limited company separates liability, uses corporate tax rates with reliefs for small companies, and opens doors with corporate buyers, at the price of bookkeeping, monthly filings and an annual audit. The usual tipping point is rising profit, or customers asking for tax invoices and contracts in a company name.
Reviewed 2026-09-12 by the Zura Labs corporate services team.
- Liability
- Sole traders bear unlimited liability; company shareholders are liable only for unpaid share capital
- Tax basis
- Individuals pay progressive personal income tax; companies pay corporate tax on net profit
- Small-company relief
- Companies meeting the tax law's SME conditions get graduated rates; capital and revenue conditions are checked yearly
- Ongoing obligations
- Companies keep accounts, file monthly and produce audited annual statements
- Standing with counterparties
- Most corporate buyers and tenders contract with juristic persons
How this works in practice
- 01
Estimate real profit, not turnover
The comparison turns on profit. With high costs and thin margins, the two forms can be closer than expected.
- 02
Look at who your customers are
If your main customers are companies or agencies, a juristic person is usually necessary from the start for contracts and tax documents.
- 03
Assess the risk in your work
Where work carries damage risk — contracting, installation, transport — separating liability has obvious value.
- 04
Include the annual upkeep in the maths
A company carries accounting fees, audit fees and document time. At low profit, that upkeep can consume the entire tax difference.
- 05
Plan the transition
Moving from personal trading to a company means handling contracts, customers, business assets and a clear handover date so income does not straddle two tax bases.
Reasons this gets delayed or rejected
Incorporating for image without accounting capacity
Penalties and overdue statements cause more harm than the image benefit.
Staying personal too long at high profit
Once profit reaches the higher personal brackets, delaying incorporation costs money every year.
Shifting work to the new company without redoing contracts
Invoicing as the company while contracts remain personal creates mismatches and tax exposure.
Answers to the questions we hear most
At what profit should I incorporate?
There is no single figure, because progressive personal tax must be weighed against corporate tax plus annual upkeep, and personal allowances differ. We run the comparison on your real numbers, with accounting and audit costs included on both sides.
Can I still take work personally after incorporating?
Legally yes, but keep the two clearly separate: separate bank accounts, documents matching the contracting party, and no undocumented use of company assets or staff for personal work, which becomes an issue on assessment.
How does a limited partnership differ from a limited company?
A limited partnership is simpler to set up with slightly lighter paperwork, but the managing partner has unlimited liability, and bringing in investors or selling the business is harder than with company shares. Businesses planning to grow or raise funds usually choose a company.
Is closing a company difficult if things do not work out?
Harder and slower than simply stopping as an individual: dissolution filing, liquidation, tax clearance and staged submissions, typically over several months. That is why you should incorporate when genuinely ready, not just in case.
When in the year should the switch happen?
The cleanest point is a tax-period boundary, which separates income and costs cleanly. If a mid-year switch is necessary, fix the handover date and the first company-invoiced date to match.
Customers want tax invoices but we are not VAT-registered
Only VAT-registered operators may issue tax invoices; otherwise you issue receipts or invoices. If key customers require tax invoices, assess registering earlier and prepare the document system for monthly filings.
This is general preparation information, not case-specific legal or accounting advice. Government fees, processing times and conditions change with official announcements. We review each guide on a schedule and show the review date on the page.