Setting Up a Business in Thailand Guide

Every year, thousands of founders arrive in Bangkok convinced the hard part is over once the plane lands. The deal is signed. The market is huge. The lifestyle sells itself. Then the paperwork begins and Thailand teaches its first lesson: this is a country that rewards preparation and quietly punishes guesswork. Here is what it actually takes to launch and run a business here in 2026.

Choosing the right company structure

Most foreign-led ventures begin with one of three structures and the choice shapes everything that follows.

The Thai Limited Company (Co., Ltd.) is still the workhorse. As of 2026 you need just two shareholders, down from the old requirement of three and registration now runs entirely through the Department of Business Development's digital DBD BizRegist platform. The structure is flexible. Banks understand it. It pairs cleanly with visas and work permits. Its catch is the 49 percent foreign ownership ceiling, which we will come to shortly.

A BOI-promoted company is where serious investors look. Promotion from the Board of Investment can unlock full foreign ownership, corporate income tax holidays of up to eight years, import duty exemptions and the right to own land. These are privileges a standard company never sees. BOI promotion is activity-based, so it favours high-value sectors: artificial intelligence, advanced manufacturing, digital platforms, biotech.

A Foreign Business License (FBL) is the third route. It allows majority foreign ownership in certain restricted activities without BOI promotion, though approval is discretionary and the timeline is slower.

Understanding foreign ownership rules

This is where newcomers stumble. Under the Foreign Business Act, a standard Thai Limited Company caps foreign shareholding at 49 percent. Thai nationals must hold the other 51 percent. Some are tempted to paper over the gap with nominee shareholders who hold Thai shares in name only. Do not. The practice is illegal, increasingly scrutinised and a liability rather than a shortcut.

Founders who want genuine majority or full control have two legitimate options. Secure BOI promotion or obtain an FBL. Which one fits depends on your industry, your investment size and your exit plans. Getting this single decision right at the outset saves enormous pain later.

The visa-and-work-permit chain

Owning your Thai company does not give you the right to work in it. The sequence is unforgiving.

First, obtain a Non-Immigrant B visa from a Thai embassy before you arrive. You generally cannot convert a tourist entry into work status from inside the country. Second, apply for a work permit once the company is registered. Third, renew both every year.

For a standard company, each foreign work permit typically requires around two million baht in registered capital and four Thai employees enrolled in Social Security per foreign hire. That is the well-known four-to-one ratio and it must hold continuously, not just on application day. BOI-promoted companies are exempt from the ratio and enjoy faster, dedicated processing. That exemption is precisely why scaling teams favour the BOI route.

The compliance most people underestimate

Setup is the easy part. Staying compliant is where unprepared businesses get caught.

The obligations are relentless once you look closely. Monthly tax filings for withholding tax and VAT land on strict deadlines. Social Security contributions are due for every employee. Audited financial statements are mandatory each year regardless of revenue. Annual general meetings and corporate filings go to the DBD. Foreign nationals file 90-day reports alongside visa and work permit renewals. BOI companies now face fresh 2025 to 2026 rules on expatriate salary thresholds and PND 1 payroll filings, applied retroactively to existing promotions.

Miss a filing and the penalties stack fast: fines, blocked renewals, even cancelled permits. The paperwork never truly stops. It only becomes routine in the hands of people who do it every day.

One team, the whole journey

The honest truth is that setting up in Thailand is not one task but a dozen interlocking ones: structuring, registration, ownership strategy, visas, work permits, accounting, payroll and year-round compliance. Stitch together separate lawyers, accountants and visa agents and you will spend more time managing them than building your business.

That gap is exactly what Settlr was built to close. We handle company formation, BOI and FBL applications, the full visa-and-work-permit chain and ongoing compliance under one roof, with one point of contact who understands your business.

Thinking about launching or expanding into Thailand? Book a call with our team and we will map out the right structure for your goals before the paperwork starts.