Setting up a Thai company: when founders actually need one

The most common reason founders ask about forming a Thai company is a visa. That is almost always the wrong reason.

The DTV exists precisely for people earning income from outside Thailand. It requires no Thai employer, no Thai company and no work permit — see the DTV application step by step. Forming a company to support it solves a problem it does not have, and buys a set of obligations that do not go away.

That said, some founders genuinely need one. The distinction is worth getting right, because it is expensive in both directions.

The ownership rule shapes everything

Thailand’s Foreign Business Act reserves broad categories of business — services in particular — for majority Thai ownership. The ordinary consequence is that a Thai limited company is structured with at least 51% Thai shareholding.

There are legitimate routes past this:

Each has qualifying criteria and none is available by default. The important thing is to check the Foreign Business Act position first, because it determines the entire shape of the structure — and because arrangements that put shares in Thai names without genuine Thai involvement are not a workaround. Nominee shareholding to disguise foreign control is unlawful in Thailand, and it is not a grey area.

What a company does not solve

It does not make the DTV work better. The DTV is a five-year multi-entry visa for foreign-source earners. A company adds nothing to it.

It does not make you a Thai tax resident. That is a pure 180-day presence count under Section 41, covered in the 180-day rule. Directorship changes nothing.

It does not reduce your personal tax. Your personal position turns on residency and remittance, not on whether you own a Thai entity.

And it may work against you. A Thai company is a Thai tax resident in its own right, filing Thai corporate income tax on its profits. It creates a Thai presence for a business that previously had none — potentially pulling income into the Thai net that was comfortably outside it. Founders who form a company hoping to improve their tax position frequently achieve the reverse.

What it does solve

A Thai company is the right answer when the business is genuinely Thai:

• Thai customers and Thai revenue. Selling into the Thai market, invoicing Thai clients.
• A Thai physical operation. Premises, staff, inventory, local delivery.
• A licensed activity. Some sectors simply require a local entity.
• A work permit for genuine work in Thailand. If you need to perform actual work here, a company is the standard route to a work permit and a Non-B visa.

Three of those are about the business, and one is about you. If none apply — if your customers, revenue and operations are all outside Thailand — the default answer is that you do not need a Thai entity.

The cost is the recurring part

Incorporation is the small number, and it is the one people research. The recurring obligations are the real commitment:

• Monthly and annual filings
• Statutory accounting
• A mandatory annual audit by a licensed Thai auditor
• A registered office
• Corporate income tax returns
• VAT registration and returns above the threshold

These continue whether or not the company trades. A dormant company formed “just in case” is a permanent cost line and a permanent compliance risk, and dissolving one is slower and more annoying than forming it.

Get a full annual figure before deciding, and hold it against what the company is actually solving.

The question almost nobody asks

Here is the part that matters most to founders who already run a company elsewhere, and it is routinely skipped: managing your existing company from Thailand may have Thai consequences.

Two mechanisms:

Permanent establishment. If the business is effectively carried on from Thailand, it may create a Thai permanent establishment, bringing some of its profit into the Thai net.

Place of effective management. Where key management decisions are actually made can affect where a company is treated as resident. Several European systems apply their own place-of-management test in the other direction — the Belgian position on effective management is one example touched on in leaving Belgium.

So the founder who relocates and keeps running their Estonian or Dutch or Spanish company from a Bangkok apartment may have changed the company’s position without changing anything on paper. This is the single most under-examined issue in founder relocations, and it is analysed against specific facts — not resolved by a general article.

Get it looked at before the move. Place of management is determined by what actually happens, and what actually happens starts the day you land.

The short version

If your customers, revenue and operations are outside Thailand, you probably do not need a Thai company, and the DTV does not require one. If the business genuinely operates in Thailand, or you need a work permit for real work performed here, a company is the standard route — check the Foreign Business Act position first and price the recurring compliance, not the incorporation fee.

And whichever applies, if you already run a company elsewhere, get the permanent-establishment and place-of-management question analysed before you move.

For the visa itself, the DTV application step by step and LTR vs DTV. For the personal tax picture, Thailand tax guide 2026 and the 180-day rule. To model your own numbers, the Thailand tax calculator.

CERØ does not incorporate companies. What the diagnosis does is establish whether you need one at all, and flag the permanent-establishment exposure on your existing structure before it becomes a fact — book the free diagnosis call.