Written by the Thai Legal & Immigration legal team · Last reviewed · Editorial policy
Companies with Board of Investment promotion can bring in foreign experts and executives through the BOI's Single Window system. Position approval is obtained from the BOI first, after which visas and work permits are issued together, often in a single visit.
BOI companies are not bound by the standard capital and Thai-headcount ratios for approved positions, but every foreign position must be justified against the promoted project. We prepare the position approvals and manage the Single Window filings.
What we handle
- Position approval applications to the BOI.
- Single Window visa and work-permit filings.
- Dependant visas for family members.
- Renewals and position changes.
How the process works
Step 1
Position approval
Foreign position justified against the promoted project.
Step 2
Filing
Visa and work-permit requests lodged online.
Step 3
Issuance
Documents issued at the service centre.
Step 4
Maintenance
Renewals tied to approval period.
Not sure this route fits you?
Get a Free Preliminary Eligibility Review from our licensed team.
Why are applications refused, and how do we prepare?
| Common refusal reason | How we prepare |
|---|---|
| Position not approved under the BOI promotion | We align positions with the BOI approval. |
Counsel's note
Position approvals expire and must match the actual role. We reconcile them annually against your organisation chart.
Frequently asked
Do BOI companies need four Thai staff per foreigner?
Can dependants work?
Advice by nationality
Why clients choose us
Six licensed Thai attorneys
Including Notarial Services Attorneys registered with the Lawyers Council of Thailand.
77 provinces covered
Offices in Bangkok and Khon Kaen with field representatives nationwide.
Your passport stays with you
We work from copies and only handle originals for filings you approve.
Honest assessment first
A Free Preliminary Eligibility Review tells you your options before any engagement.
Sources & references
- Thailand Board of Investment — checked 2026-11-03
- Department of Employment — checked 2026-11-03
General information only, not legal advice. Immigration decisions rest with the Thai authorities. See our disclaimer.