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Key Takeaways
- The conventional route is a Non-Immigrant B visa followed by a work permit, both employer-sponsored.
- Employer conditions matter as much as your own — registered capital and Thai employee ratios determine whether a company can hire you.
- The SMART Visa targets specialists, investors, executives and startups in defined industries with lighter conditions.
- The Long-Term Resident visa offers a multi-year route for high earners, specialists, remote workers and retirees.
- Working on a tourist visa is unlawful and enforcement is real.
The conventional route
How most foreign employment in Thailand is authorised.
Non-Immigrant B visa. Obtained before entry, on the basis of employment documentation from your Thai employer. It permits entry for the purpose of work; it does not itself permit working.
Work permit. Applied for after arrival, through the Ministry of Labour, on the basis of the employer's documentation. Only this authorises you to work.
The distinction matters. Holding a Non-B visa without a work permit does not make working lawful.
The permit is tied to the employer, the position and frequently the work location.
Extensions of stay are then applied for through immigration, aligned to the employment.
90-day reporting. Foreigners staying long-term must report their address to immigration at defined intervals, which is an ongoing obligation people forget.
Re-entry permits are needed if you leave and return, otherwise your extension of stay lapses.
And changing employer requires a new permit, not a transfer.
What the employer must satisfy
The conditions that frequently decide the outcome.
Registered capital at a specified minimum per foreign employee.
Thai employee ratio — a specified number of Thai staff per work permit issued.
These are the reason many small Thai companies simply cannot employ foreigners, whatever they might wish.
BOI-promoted companies face relaxed conditions, which is a substantial practical advantage and worth identifying when job hunting.
Representative offices and regional offices have their own arrangements.
Which means the single most useful question to ask a prospective Thai employer is whether they have employed foreigners before and whether they hold BOI promotion.
SMART Visa and LTR
The newer routes that changed the picture for some people.
SMART Visa targets four groups — highly skilled talent, investors, executives and startup entrepreneurs — in targeted industries defined by government policy.
Its advantages include a longer permitted stay, exemption from the work permit requirement in defined circumstances, relaxed reporting obligations and provisions for family.
Eligibility is industry-specific, which is the main constraint — it applies to targeted sectors rather than to all employment.
The Long-Term Resident visa is broader, covering wealthy global citizens, wealthy pensioners, work-from-Thailand professionals and highly skilled professionals.
Its advantages include a multi-year stay, a digital work permit route, relaxed reporting and family inclusion.
The work-from-Thailand category is the significant one for remote workers, requiring employment with an established foreign company and meeting income and experience conditions.
Both have specific criteria including income thresholds, and both are revised — verify current requirements with the Thai authorities rather than relying on summaries.
Documents and process detail
What the application actually needs.
From you: passport, degree certificates, professional qualifications, employment references, a medical certificate and passport photographs.
Document legalisation where required — practice varies by nationality and document type, so confirm what your case needs.
From the employer: company registration documents, financial statements, VAT registration, the employee list demonstrating the Thai staffing ratio, and a description of the position.
The employer does most of the work, which is why their experience with the process matters so much.
Processing is generally reasonably quick once the file is complete, which puts the emphasis on document preparation.
The permit book — historically a physical blue book — records your employer, position and location, and changes must be recorded in it.
And keep it with you or accessible, since you can be asked to produce it.
Family and dependants
The arrangements that follow.
Dependants can generally obtain Non-Immigrant O visas on the basis of your employment, with extensions aligned to yours.
A spouse's right to work is separate. Accompanying status does not confer permission to work, and a spouse wanting employment needs their own permit through their own employer.
International schooling in Bangkok is extensive and expensive, and it is frequently the largest cost in a family relocation.
Healthcare is excellent privately, and international insurance makes it accessible.
The LTR visa includes family provisions that are more generous than the conventional route, which is a further argument for checking eligibility.
And 90-day reporting applies to dependants too, which is easy to overlook.
Common problems and how to avoid them
Six that recur.
Arriving without the Non-B. The visa should generally be obtained before entry for the conventional route, and arriving as a tourist intending to convert is not reliable.
Working before the permit is issued. The visa alone does not authorise work, and the gap between arrival and permit issuance is a period in which you must not work.
Employer unable to sponsor. Capital and staffing ratio conditions are frequently the blocker, and discovering this after accepting an offer wastes months.
Missing 90-day reports. An ongoing obligation carrying penalties.
Travelling without a re-entry permit, which lapses your extension of stay and creates a genuine problem on return.
And letting documents expire mid-process — medical certificates and other supporting documents have validity periods.
The common thread is that Thailand's system is procedural rather than discretionary. Following the steps in order works; improvising does not.
Long-term status and permanent residence
Where the routes lead.
Permanent residence exists and is available after a qualifying period of consecutive annual extensions of stay, subject to a quota by nationality and to conditions including income, tax payment history and Thai language ability.
The quota is genuinely limiting — a fixed number per nationality per year — which makes Thai permanent residence considerably harder to obtain than in most countries covered in this series.
Citizenship follows permanent residence after a further qualifying period, with language and other requirements.
The LTR visa offers a long-term status without leading to permanent residence in the same way, which is a different proposition — long stay without settlement.
The Elite visa similarly offers long stay through payment without work rights or a settlement path.
Which means Thailand is a country where long-term living is achievable through several routes and formal settlement is genuinely difficult, and it is worth being clear about which you are pursuing.
Comparing the routes
A summary to help you choose.
Non-B plus work permit. For anyone employed by a Thai entity. Requires the employer to meet capital and staffing conditions. Ties you to that employer.
BOI-promoted employer route. Same structure with relaxed conditions on the employer's side, which is why identifying BOI companies matters.
SMART Visa. For specialists, executives, investors and startups in targeted industries. Longer stay, work permit exemption in defined circumstances, lighter reporting.
LTR visa. For high earners, specialists, remote workers and pensioners. Multi-year, digital work permit, annual rather than 90-day reporting, family inclusion.
DTV. Longer-stay multiple entry for remote workers and defined activities, with a lower bar and a different structure.
Elite visa. Long stay through paid membership, no work rights.
The question to ask yourself: do I have a Thai employer, a qualifying foreign employer, targeted-industry expertise, or none of these? The answer points directly at the right route.
Costs and who pays
The financial side of the process.
Visa fees at the Thai embassy or consulate for the Non-B.
Work permit fee, varying with the permit duration.
Extension of stay fee through immigration.
Re-entry permit fees, single or multiple entry.
Document legalisation and translation, which varies by nationality and is frequently the largest cost.
Medical certificate.
And agent fees, where the employer uses a visa agent — which many do, since the process is administratively fiddly.
Practice on who pays varies. Many employers cover the whole process; some expect the employee to bear document costs. Clarify at offer stage, since it is a normal question and the amounts are not trivial.
LTR fees are higher but cover a multi-year period, which changes the annualised comparison considerably.
A note on visa agents
Widely used and worth understanding.
Most employers use an agent for work permit and extension processing, because the paperwork is fiddly and the offices are bureaucratic.
Good agents save real time and know the current requirements at specific offices, which vary more than they should.
Poor agents create problems, including cutting corners in ways that put your status at risk.
Some arrangements are outright improper — agents offering work permits without genuine employment, or extensions based on documentation that does not reflect reality. These leave you personally exposed.
Ask who the agent is and whether the employer has used them repeatedly.
And retain your own documents. An agent holding your passport for extended periods is normal in the process and you should still know where it is and when you get it back.
Mini checklist
- unchecked: Occupation checked against the restricted list
- unchecked: Employer's capital and ratio position confirmed
- unchecked: BOI promotion status asked about
- unchecked: SMART Visa industry eligibility checked
- unchecked: LTR category eligibility checked
- unchecked: Non-B obtained before entry if using the conventional route
- unchecked: Work permit understood as separate from the visa
- unchecked: 90-day reporting obligation noted
- unchecked: Re-entry permit understood before travelling
Scenarios
Scenario 1: You have a conventional job offer
Confirm the employer can legally sponsor you — capital and staffing ratio — before anything else, then obtain the Non-B before entering and the work permit after arriving. The order matters.
Scenario 2: You are a specialist in a targeted industry
Check SMART Visa eligibility. Where it applies it removes the work permit requirement in defined circumstances and offers a longer stay with lighter obligations.
Scenario 3: You work remotely for a foreign employer
The LTR work-from-Thailand category was built for this, with income and employer conditions. It is a considerably better position than trying to make a tourist or education visa work.
Tip: Remember that the Non-B visa and the work permit are two separate things. Holding the visa does not make working lawful — only the work permit does, and it is applied for after you arrive.
Do's and Don'ts
Do
- Confirm the employer meets the sponsorship conditions
- Ask about BOI promotion
- Check SMART and LTR eligibility
- Obtain the Non-B before entering
- Apply for the work permit after arrival
- Keep up 90-day reporting
Don't
- Work on a tourist visa
- Assume the visa alone permits work
- Assume a permit transfers to a new employer
- Leave the country without a re-entry permit
- Ignore the restricted occupation list
- Rely on outdated threshold figures
Common Mistakes
- Confusing visa with work permit. They are separate and only the permit authorises work.
- Assuming any employer can sponsor. Capital and ratio conditions frequently prevent it.
- Missing SMART or LTR eligibility. Both are considerably lighter where they apply.
- Forgetting 90-day reporting. An ongoing obligation that people overlook.
- Travelling without a re-entry permit. It lapses your extension of stay.
- Working on a tourist visa. Unlawful and genuinely enforced.
Related Guides
Keep building on this with the related guides in this series:
- Working in Thailand as a Foreign Professional
- Working in Bangkok
- Thailand's Digital Nomad and LTR Visas
- English Teaching Jobs in Thailand
- Vietnam Work Permits Explained
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Frequently Asked Questions
What is the difference between a Non-B visa and a work permit?
The Non-B permits entry for the purpose of work; the work permit authorises the work itself. Holding the visa alone does not make working lawful.
Why can some Thai employers not hire foreigners?
Minimum registered capital per foreign employee and a required ratio of Thai staff per permit. Small companies frequently cannot meet these conditions.
What is the SMART Visa?
A route for highly skilled talent, investors, executives and startup entrepreneurs in government-targeted industries, offering longer stay and work permit exemption in defined circumstances.
What is the LTR visa?
A long-term resident route covering wealthy global citizens, pensioners, work-from-Thailand professionals and highly skilled professionals, with multi-year stay and lighter obligations.
Do I have to report to immigration?
Yes. Long-term foreign residents must report their address at 90-day intervals, and it is an obligation people routinely forget.
Can I change employer on my work permit?
Not by transfer. A new permit is required, which is a genuine constraint on job mobility in Thailand.
What documents does a Thai work permit need?
From you: passport, degrees, qualifications, references and a medical certificate. From the employer: company registration, financial statements, VAT registration and the Thai employee list proving the staffing ratio.
Can my spouse work in Thailand?
Not automatically. Accompanying dependant status does not confer permission to work; a spouse needs their own work permit through their own employer.
Can I get permanent residence in Thailand?
It exists but is genuinely difficult — available after a qualifying period of consecutive annual extensions, subject to a fixed annual quota per nationality and conditions including income, tax history and Thai language ability.
Which Thai visa route fits my situation?
A Thai employer means Non-B plus work permit; targeted-industry expertise points to the SMART Visa; a qualifying foreign employer with sufficient income points to the LTR; and the DTV is the lower-bar alternative.
Who pays for a Thai work permit?
Practice varies — many employers cover the whole process while some expect you to bear document legalisation costs. Clarify at offer stage, as the amounts are not trivial.
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