BOI One Stop Service in Thailand for Visa and Work Permit

A strong CV does not create access to BOI One Stop. The route starts with the employer: the company must be operating an investment-promoted activity with the relevant Section 25 and 26 privileges, and the foreign hire must be tied to work that BOI can approve for that promoted operation. A degree, a senior title or a high salary may help the individual satisfy the role criteria, but none of those facts substitutes for the employer-side entitlement.

Think of a manufacturing engineer brought in for a promoted production project, a software or data specialist working in a promoted digital activity, or a manager whose responsibilities sit inside the promoted operation. Those are plausible profiles because the job can be connected to the project. The same company may also employ foreign staff whose roles do not qualify for this channel. BOI promotion is not a blanket visa privilege for everyone on the payroll.

This is also why BOI One Stop should not be grouped together with LTR, Smart Visa or the ordinary Non-B route. LTR and Smart Visa have their own eligibility tests. Standard employment sponsorship does not require a BOI-promoted project. The BOI route is a separate employer-sponsored process built around project privileges, an approved foreign position and an individual who fits that position.

For an employee with an offer, the useful first question is therefore not “Which BOI visa should I apply for?” It is whether the employer can identify the promoted project, confirm the Section 25–26 privilege and map the job to an approvable position. Until that is clear, travelling to a visa-and-work-permit centre is premature.

There are two employer-side approvals that are easy to collapse into one. First, the promoted company seeks approval for the foreign position itself: the job function, responsibilities, headcount, requested term and the business reason the role is needed. After that, the company places a named foreign national into the approved position. BOI then assesses whether the individual’s background meets the criteria for that role.

The criteria changed materially before 2026. BOI Announcement Por.8/2568 cancelled Por.3/2567 and, for promotion certificates issued before the announcement, became effective on 1 January 2026. It introduced current income thresholds and employer-side staffing conditions. For manufacturing entities with more than 100 total employees, Thai personnel must generally make up at least 70% of employment for position approval under this framework; the ratio does not apply to service activities or manufacturing entities with 100 or fewer employees, and short positions of no more than six months are treated separately.

Individual tests vary by category. A management-level placement generally requires the applicant to be at least 27, have five years of directly relevant experience and meet the current income threshold — THB 75,000 a month, or THB 50,000 with a bachelor’s degree or higher. An engineer is assessed under a different rule: from age 22, with an engineering degree plus relevant experience, or substantially more direct engineering experience if the degree is missing; the applicable income threshold also changes with the qualification profile. These are examples of the current framework, not a substitute for checking the exact role.

That distinction matters before relocation. A job offer written for internal corporate purposes may not map neatly to the BOI position the company needs. If the duties, seniority or candidate profile do not match, changing the title at the last minute does not solve the underlying issue. HR should align the real job with the BOI category before treating the immigration side as the main task.

The immigration counter is not the first step. The promoted employer needs a valid project basis and a foreign position that has been approved, or is ready to be approved, under the current rules. Only then does the employee’s entry status become operationally relevant. BOI’s published procedure uses Non-B as the normal entry status for the working specialist and Non-O for accompanying family members. Someone already in Thailand under another status may have a conversion route, but that has to be verified for the individual case.

The company then places the named employee into the approved role. This is where the candidate’s education, experience, age and current income criteria are matched to the position. Once BOI approves the placement, the case still has two separate government outcomes to complete: Immigration handles permission to stay, while the Department of Employment handles work authorization. In 2026, Single Window introduced a revised Digital Work Permit procedure specifically for BOI cases handled through TIESC.

“Single Window” describes integration, not a single legal decision. The platform lets the agencies share filings and reduces the need to submit the same case independently to BOI, Immigration and the Department of Employment. It does not turn BOI approval into immigration permission, and a Non-B visa is not itself permission to work. Those distinctions matter whenever an HR team is planning travel dates or relying on the remaining period in the employee’s passport.

Dependants run alongside the main case, but they are not simply extra names on the employee’s work authorization. The BOI framework allows qualifying family members to accompany the foreign expert, normally through Non-O status, with relationship evidence and their own immigration records. A spouse who later wants to work needs a lawful work basis of their own; dependant status should not be treated as automatic employment authorization.

The practical advantage of the system appears when the employer-side file is already coherent. A mismatch between the approved role, the employment contract, the candidate’s credentials and the current immigration status is not cured by arriving at TIESC with more paperwork. The integrated system is most useful after those underlying facts line up.

Legacy BOI pages can still send readers to Chamchuri Square. That is no longer the right default location. The Thailand Investment and Expat Services Center began operating at One Bangkok on 17 March 2025, bringing the One Stop Service for Visa and Work Permit into the new centre. Immigration and the Department of Employment handle eligible visa and work-permit services there, while BOI remains responsible for the promotion and foreign-position side of the process.

Much of the case moves through Single Window. The employer files position and personnel information electronically, and the connected agencies can work from the shared case rather than requiring three entirely separate submissions. That does not make every step remote. Depending on the transaction, the foreign national may still need an appointment, identity check, immigration action or another in-person step at TIESC, so the current portal notice and appointment confirmation matter more than an old checklist.

Single Window made a specific change in 2026. A notice dated 29 January introduced a revised Digital Work Permit process for BOI visa cases at TIESC from 9 February 2026. The same notice expressly distinguished ordinary business Non-B cases, which continued under their existing document process rather than automatically moving into that BOI-specific workflow.

The familiar “three hours” claim needs the same historical context. Older official One Stop material said visa and work-permit applications or renewals could be processed within three hours once proper and complete documentation had been received; older BOI procedures also used three-hour wording for certain urgent permissions. That was never an end-to-end promise covering employer qualification, position approval, employee placement, Immigration and work authorization from scratch. In 2026, the safest operational source is the current Single Window or TIESC notice for the exact action being booked.

The BOI framework allows the promoted company to bring qualifying family members alongside the foreign expert. In BOI’s published procedure, the working specialist normally enters under Non-B, while accompanying family members use Non-O. Their stay is connected to the principal case, but family members still have their own immigration records and need evidence of the relationship.

Residence as a dependant is not the same as employment authorization. A spouse does not become an employee of the BOI-promoted company merely because the principal applicant has been approved, and Non-O should not be presented as an automatic right to work. If the spouse takes a job, the lawful work route has to be established for that employment and immigration basis.

Timing can become awkward when the family is added after the main employee’s case is already moving. Passports, marriage or birth evidence and the requested stay periods need to line up with the principal file. A family member who entered Thailand under another status may have a route to change status, but that is a separate immigration question and should not be assumed from the employee’s BOI approval.

For planning purposes, keep the two issues separate: BOI can support dependant residence for eligible family members; working in Thailand requires its own legal basis. The spouse-work question belongs to the spouse’s actual job and status, not to the employee’s BOI label.

There is no rule that a BOI work permit is always valid for one year. The current Por.8/2568 framework sets maximum approval periods by position and promoted activity. Many positions can be approved for up to two years at a time; certain service categories such as TISO, BPO and IBPO are capped at one year, while IHQ, ITC, IBC, research and development and specified technology activities can reach four years. Science and technology researcher positions can also be approved for up to four years.

Those are ceilings, not a promised validity period for every employee. The BOI approval is tied to the project, the position and the company’s conditions. Immigration and the Department of Employment then complete their own parts, and an employee’s passport validity or immigration history can affect the practical calendar.

Renewal is another eligibility check, not a rubber stamp. BOI can reassess the need for the position, employer staffing conditions and whether the individual still meets the applicable qualifications. In 2026, Single Window also published specific guidance on income evidence for extensions under Por.8/2568, which is a good reason to work from the current portal notice rather than reusing last year’s document pack.

A change of role, project or employer can trigger a new corporate process before the move happens. Section 26 ties permission to work to the position approved by the Board, and the Single Window manuals contain separate transactions for role changes, additional work and termination. An employee cannot carry a BOI approval to a new employer as if it were a personal licence.

Re-entry permission and 90-day reporting sit beside this process but solve different immigration obligations. They are worth tracking in the same calendar, yet neither replaces the need to keep the approved role, stay permission and work authorization valid.

The main difference is the employer’s legal basis, not the visa label. Under the BOI route, the company is using privileges attached to a promoted project, obtains approval for the foreign position and then places the named employee into that role. Single Window connects that BOI process with the later Immigration and Department of Employment actions.

A standard employment case does not need a promoted project or BOI position approval. The employer qualifies under the ordinary foreign-employment rules, the worker uses an appropriate Non-B status, and work-permit and immigration actions follow the normal channels. That is not an inferior route; it is simply a different sponsorship framework.

Non-B is not a work permit in either system. The distinction can disappear in casual conversation because people use “visa” as shorthand for the whole employment package. BOI cases can gain administrative convenience from Single Window and TIESC, but the integrated channel does not remove the underlying tests or detach work authorization from the approved role.

The 2026 Single Window notice makes the difference concrete. Its revised Digital Work Permit process at TIESC was expressly for BOI visa cases, while ordinary business Non-B cases remained under their existing document procedure. BOI One Stop is therefore not an upgrade an employee can elect for speed; it is available only when the employer and promoted project qualify.

The costliest delays usually begin before the TIESC appointment. A relocation date is promised while the foreign position is still unapproved; the internal job title does not match the duties filed with BOI; or the employee misses a current experience, qualification or income test. In 2026 there is an additional risk: HR may still be using Por.3/2567 even though BOI formally cancelled it and replaced it with Por.8/2568.

Immigration status creates a second class of failures. The principal employee is expected to use Non-B and the family Non-O, but the actual entry status or remaining stay does not support the planned action. BOI approval does not override the employee’s current immigration record or passport limits.

Then there is legacy guidance. Search results and old company folders still contain Chamchuri Square addresses, outdated forms, old document lists and the “three-hour” service claim without its context. For an operational step in 2026, the current Single Window and TIESC notice should control the preparation.

That is why the bottleneck in a BOI case is often upstream of the service centre. The case becomes difficult when employer entitlement, the approved role, the candidate profile and immigration status were never aligned in the first place.