What an IBC does
Core activities are management, administrative, technical, support and treasury services to associated enterprises, plus certain international trading. Check the activity and associated-enterprise definitions in the rules in force.
IBC: a Thai company providing management, technical or treasury services to associated enterprises may claim Revenue Code tax incentives when it meets Thai staff and expenditure conditions, and may separately seek BOI non-tax rights.
IBC tax incentives come from tax law and Revenue Department approval, while non-tax rights such as foreign ownership and foreign experts come from the BOI. One does not grant the other. This page checks the structure before filing and is not a tax ruling.

| Topic | Starting information | Review question |
|---|---|---|
| Group | Group chart and associated recipients | Whether recipients qualify as associated enterprises |
| Functions | Management, technical and treasury services | Activities that qualify as IBC |
| Substance | Staff, expenditure and premises in Thailand | Minimum conditions in Revenue rules |
Core activities are management, administrative, technical, support and treasury services to associated enterprises, plus certain international trading. Check the activity and associated-enterprise definitions in the rules in force.
Tax conditions set minimum skilled employees and operating expenditure in Thailand. Real staff, premises and decision-making are needed; nominal arrangements risk losing incentives.
Reduced rates and certain exemptions require Revenue Department approval; BOI promotion of IBC activity gives non-tax rights. Decide whether you need both or one.
Measures may include a special personal income tax rate for qualifying foreign executives or experts. Check individual eligibility and correct filing.
Intra-group services need agreements, pricing and evidence of service. Prepare transfer-pricing documentation where required and align booked revenue with actual work.
Incentives depend on meeting conditions each accounting period. Check headcount, spending and qualifying income before closing accounts and monitor rule changes.
General preparation guidance. Check current announcements and project facts before filing; eligibility and approval are not assured.