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Foreign Investment Guide

Which Businesses Can Apply for BOI Promotion: 10 Eligible Categories, Privilege Groups A1+ to B and Minimum Conditions

The BOI promotes only activities listed in the eligible activities list under Notification No. 9/2565, which is divided into 10 categories. Each activity receives privileges according to its group, from A1+ to B. This guide explains which activities are covered, how the privilege groups differ, the minimum investment, the general conditions, and the cases where foreigners cannot hold a majority of the shares.

News & Articles

Start a business in Thailand

Which Businesses Can Apply for BOI Promotion: 10 Eligible Categories, Privilege Groups A1+ to B and Minimum Conditions

BOI Application Process in Thailand: From Filing to Promotion Certificate, Review Times, Required Information and Deadlines You Cannot Miss

100% Foreign Ownership in Thailand: BOI, Foreign Business License and the US Treaty of Amity Compared

Latest articles

A Will on a Phone, in a PDF, a LINE Message or a Video: Does It Count in Thailand?

Employee Arrested or Facing a Criminal Case Outside Work: What an Employer Should Do Before Dismissing

Employees Have Filed Demands to Change Employment Conditions: How the Company Should Prepare to Negotiate

An Employee Criticises the Company on Social Media: How Far Can the Employer Go?

Estate Administrator Dies or Cannot Continue Before the Estate Is Divided: What Heirs Do

Paid for the Funeral: Can You Be Reimbursed from the Estate, What Evidence to Keep, and What If Heirs Dispute the Amount

Several Wills Found, Conflicting Terms, or a Thai Will Plus a Foreign One: What to Check First

Night Duty, Standby, On-Call and Travel Time: Does It Count as Working Time in Thailand?

Post-Divorce Alimony vs Child Support in Thailand: Who Can Claim, When, and How to Write It in the Divorce Agreement

Spouse Having an Affair: Divorce or Compensation Claim, What Evidence to Prepare and How to Gather It Lawfully

Spouse's Credit Card, Loan and Business Debts: Is the Other Spouse Liable?

Remarried and Want to Adopt Your Spouse's Child: What to Prepare

Estate Already Divided, Then a Bank Account or Another Plot of Land Turns Up: Do You Start Over?

Boss Gives Instructions on LINE After Hours or on a Holiday: Can You Claim Overtime?

Divorcing While the House Is Still Under a Bank Mortgage: Title Deed, Co-Borrowers, Down Payment and How to Split

Divorce When a Spouse Owns Company Shares or Runs a Business: Are the Shares Marital Property, and How Are Company Assets Separated?

Estate Administrator Not Distributing, Not Accounting, Not Replying: What Heirs Can Do

Pressured to Sign a Resignation Letter: What You Can Still Claim

Frequent Sick Leave, Absence or No Contact: What an Employer Should Check Before Dismissing

Inheriting Company Shares: Shareholder Register, Dividends and the Heir's Rights

Rent From Inherited Property Before the Estate Is Divided: Who Collects It, How to Keep the Books and What Heirs Must Be Told

Company Offers a Lump Sum to End a Labour Dispute: What to Check Before Signing, Item by Item

A Minor Child Inherits: How Far Can a Parent Manage the Money and Sell Property, and When Is Court Permission Needed?

Leaving to Join a Competitor in Thailand: Non-Compete Clauses, Trade Secrets, Customer Solicitation and Taking Data

What to Agree in a Thai Prenuptial Agreement, and Which Template Clauses to Avoid

Suspect Your Spouse Is Moving Money or Transferring Assets Before Divorce: How to Build an Asset and Money-Trail List Lawfully

Suspect a Will Is Forged or Was Made Under Pressure? What Heirs Should Gather and How Long They Have

Suspension During a Disciplinary Investigation in Thailand: Is Pay Owed, and What Should the Employer Document?

Taking a Child Abroad: Travel, Study or Relocation, and Whose Consent You Need

Contact Was Agreed but the Other Parent Refuses: Private Agreement, Divorce Record and Court Order Compared

Annual Bonus vs Performance Bonus: How to Write a Policy That Does Not Become an Unintended Debt

Consigned Stock Missing or Sales Money Unpaid: Who Is Liable?

When a Customer Deducts Penalties or Damages From Its Payment: What to Check Before You Agree a Figure

Delivered but the Customer Won't Sign Acceptance, So You Can't Invoice: How to Draft Delivery and Acceptance Terms

When a Director Leases a Building to the Company or Sells It Goods: What to Prepare

A Director Resigns: What to Hand Over So the Company Keeps Running (Documents, Signing Authority, Bank Accounts, Online Systems)

An Employee Resigns Without a Handover: What the Employer Can Do About Unfinished Work, Equipment, System Access and Final Wages

Employees Taking Side Jobs or Competing With the Employer: Conflict-of-Interest Rules That Are Not Too Broad

Extra Work Ordered on LINE, Customer Refuses to Pay: The Evidence Your Company Needs

Performance Improvement Plans (PIP) in Thailand: What Employers Should Do When an Employee Misses KPIs

Product Recalls: How Brand Owners, OEM Factories and Distributors Split the Duties

Quotation and Purchase Order (PO) Do Not Match: Which Terms Govern?

Raw Material Costs Rise Mid-Contract: When Can a Company Ask to Adjust the Price?

Cutting Wages, Working Days or Benefits: What an Employer Must Check First

SaaS Provider Shutting Down: How to Get Your Data and Work Back

Selling to Companies or to Consumers: How the Business Model Differs (B2B vs B2C)

What Is a Business Model Canvas? How to Fill It In, Block by Block, With a Coffee Shop Example

You Have a Business Idea but Don't Know Who to Sell To: How to Choose Your First Customer Segment

You Made a Sale, but What Is Left: Calculating Cost per Sale Before You Start a Company

From Business Model to First Customer: A Checklist Before You Take Work and Money

What Is a Lean Canvas? How to Fill It In and How It Differs From the Business Model Canvas, for Startups

What Money to Prepare Before Opening a Company: Registered Capital, Start-up Funds and Working Capital

Customers Say They're Interested, but Will They Actually Pay: Testing an Idea Before a Large Investment

Before Opening a Second Branch: A Systems and Legal Checklist for SME Owners

Received a Breach-of-Contract Letter? What to Prepare Before Replying

Broker, Agent or Reseller: Choosing a Sales Model That Fits Thai Law

What Is a Business Model, and How Each Choice Changes Contracts, Tax, Licences, Labour and Data

If the Business Owner Is Suddenly Seriously Ill, Injured or Detained: What the Company Should Have Prepared

Choosing B2B Customer Segments in Thailand: How Government, Large Enterprises, SMEs and Overseas Customers Differ in Law

Thailand Company Formation for Overseas Corporate Service Firms: Responsibilities and Handover

Coordinating Thai Legal, Accounting and Immigration Work: Who Does What?

Employee Fraud or Embezzlement in Thailand: Running an Internal Investigation

Expanding Your Business: Own Branches, Franchise or Distributors, and Which to Choose

Family Business: Dividing Roles, Pay and Decision Rules So Family Does Not Fall Out

A Former Employee Took the Customer List: Trade Secrets and the Paperwork to Have in Place

In-House or Outsourced: How an SME Should Decide and What the Contract Needs

Instructing Thai Counsel on Debt Recovery: Evidence, Budget and Reporting

Measuring a Legal Retainer: What You Get in a Month With No Lawsuit, and a Sample Executive Report

What Drives a Monthly Legal Retainer Quotation in Thailand, and What to Send to Get One

Monthly Management Meetings: Which Numbers to Review and What Legal Items Belong on the Agenda

More Work, Less Profit: Which Jobs to Accept, and the Contract Terms That Quietly Turn Jobs into Losses

Contract Manufacturing (OEM) or Your Own Brand: Which to Choose and What the Law Changes

Depending on One Big Customer: Measuring the Risk and Drafting Protection Before Orders Are Cut

Turning One-Off Projects into Monthly Revenue: Retainers, Care Plans and Subscription Contracts