Siam Legal International - Thailand Business in H2 2026: Navigating a More Uncertain Regulatory Landscape

As Thailand enters the second half of 2026, businesses are operating in an environment shaped by geopolitical uncertainty, slower structural growth, tighter financial oversight, and evolving regulatory expectations. For foreign businesses and investors, these developments make proactive compliance and sound business structures increasingly important.

Speaking at the Bank of Thailand Southern Region Office’s annual seminar on July 13, 2026, Bank of Thailand Governor Vitai Ratanakorn warned that uncertainty has become a permanent feature of the global business environment, driven by tariffs, trade restrictions, and divisions between major economic blocs.

For businesses operating in Thailand, this means that global developments are increasingly influencing the domestic business environment and the way companies manage risk.

A More Challenging Economic Environment

The Bank of Thailand maintains its forecast of 2.3% GDP growth for Thailand in 2026. However, Governor Vitai also highlighted longer-term structural challenges, noting that Thailand’s potential GDP growth has declined from around 5% to approximately 2.7%, influenced by an aging population and weak investment over the past two decades.

Thailand's investment growth has also lagged behind regional peers. Using 1997 as a base year, Thailand's investment index has risen to approximately 106, compared with 200 in Malaysia and 900 in Vietnam.

These challenges suggest that businesses should look beyond short-term economic growth when planning for H2 2026. Companies should also consider how changes in trade, investment, technology, and global supply chains may affect their operations.

Financial Transactions Under Closer Scrutiny

One of the key developments businesses should watch is increased scrutiny of financial transactions.

The Bank of Thailand has instructed financial institutions to strengthen monitoring of transactions that may carry money-laundering risks. This includes certain gold purchases through mobile applications followed by immediate physical withdrawals. Such transactions reportedly reached around 4,000 kilograms per month before falling to approximately 700 kilograms following tighter supervision.

Cash transactions are also receiving greater attention. Cash withdrawals exceeding THB 5 million are subject to enhanced monitoring, while suspicious transactions in this category reportedly fell by 35% within two months following increased oversight.

From the fourth quarter of 2026, cash deposits exceeding THB 5 million will also require clearer identification of the source of funds.

For businesses, these developments reinforce the importance of maintaining accurate financial records and being able to demonstrate the legitimate commercial purpose and source of significant transactions.

Foreign Ownership and Corporate Structures

Foreign ownership and nominee arrangements remain another important area of regulatory attention.

Authorities continue to scrutinize corporate structures where Thai shareholders may be acting on behalf of foreign investors to circumvent foreign ownership restrictions. Foreign businesses should therefore ensure that shareholder arrangements, investment funds, corporate records, and ownership structures accurately reflect the underlying business relationship.

Businesses should not wait for a regulatory inquiry before reviewing these arrangements. Existing companies with foreign participation should consider reviewing their structures and supporting documentation, while businesses planning new investments should address compliance requirements from the outset.

What Businesses Should Watch in H2 2026

The remainder of 2026 is unlikely to be defined by one single regulatory change. Instead, businesses should prepare for continued scrutiny across several connected areas.

Foreign businesses operating in Thailand should consider reviewing their:

• Corporate and ownership structures to ensure compliance with applicable foreign ownership requirements.
• Financial transactions and documentation to ensure significant payments and transfers have clear commercial purposes and traceable sources of funds.
• Tax positions and reporting to identify potential issues arising from cross-border activities or foreign income.
• Internal compliance procedures to ensure the business can respond effectively to requests from financial institutions or regulatory authorities.

As Rex Baay, Operations Manager at Siam Legal International, explains:

            “The current environment calls for businesses to take a more proactive approach to compliance. Regulatory compliance, ownership structure, and financial transaction monitoring are no longer secondary considerations for foreign businesses operating in Thailand. Businesses should review their structures and compliance practices now rather than wait for a regulatory issue to expose a weakness.”

For foreign businesses in Thailand, H2 2026 is ultimately about preparation. As economic and regulatory conditions continue to evolve, businesses that maintain transparent structures, well-documented financial practices, and up-to-date compliance procedures will be better positioned to manage uncertainty and move confidently into 2027.

Siam Legal International is a full-service law firm with more than 22 years of experience assisting foreign nationals and businesses in Thailand. With offices in Bangkok, Chiang Mai, Phuket, and Pattaya, the firm provides legal support across corporate structuring, foreign investment, regulatory compliance, immigration, property transactions, and litigation.
 

For more information about Siam Legal International, contact the company here:

Siam Legal International
+662 254 8900
info@siam-legal.com
18th Floor, Unit 1806 Two Pacific Place, 
142 Sukhumvit Rd, Khlong Toei,
Bangkok 10110, Thailand