Thailand NON-B Business Visa & Work Permit — Full Service

Thai Notary Law & Service Co., Ltd.

Consultant helping a foreign client prepare visa and work-permit documents

Notarial Services Attorneys • Reg. 0405565001923

Thailand NON-B Business Visa — Work, Invest and Operate Business in Thailand

NON-B is the principal pathway for foreigners working or running businesses in Thailand. We prepare both company-side and applicant-side documents, coordinating with embassies, the Department of Employment and the Immigration Bureau — including BOI, IEAT and Smart Visa pathways for investors.

NON-B EmploymentWork PermitBOI / IEATSmart Visa1-Year ExtensionWP3 PreparationNotarial Services AttorneysFree 24h Consultation

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Serving Nationwide Thailand

Licensed & Trusted

Six Notarial Services Attorneys Licensed by the Lawyers Council of Thailand

Thai Notary Law & Service Co., Ltd. — Tax/Reg ID 0405565001923. Company registration and attorney certificates are displayed below.

Thai Notary Law & Service team photograph in Bangkok — Our notary and legal team — head office in Wang Thonglang, Bangkok

Business Registration Certificate of Thai Notary Law & Service Co., Ltd. — Registration No. 0405565001923 — Company Reg. No. 0405565001923

Notary License (1/6)

Notary License Miss Anutaree — Thai Notary Law & Service Co., Ltd. — Miss AnutareeCertified by The Lawyers Council of Thailand

Quick Answer

What you need to know

NON-B Business Visa with Work Permit for foreigners working or investing in Thailand. Full coverage — company registration, price on requestM registered capital per foreign role, 4:1 Thai-foreign staff ratio, visa and Work Permit lodgement. price on request processed in 30-45 days.

•Company structured to 4:1 ratio and 2M capital
•WP3, financials, PND.1 tax filings included

Quick Summary

›Company structured to 4:1 ratio and 2M capital
›WP3, financials, PND.1 tax filings included

Understanding Thailand NON-B Business Visa — Work, Invest and Operate Business in Thailand

Understanding NON-B and Its Connection to the Work Permit

The NON-B (Non-Immigrant B) visa is for foreigners coming to work, invest or run businesses in Thailand. Applicants must have a properly registered Thai employer or own a Thai-registered business. The NON-B authorizes "stay" while the Work Permit authorizes "work" — both are required for legal employment. We deliver end-to-end NON-B + Work Permit service, including the WP3 (employment invitation letter) the company must issue before the applicant applies at a Thai embassy abroad.

Eligibility — Employer Company and Applicant

Employer Company: registered in Thailand for ≥1 year, fully paid-in capital of THB 2 million per foreign position, 4 Thai employees per foreign worker, and properly filed corporate tax for the prior year (BOI companies receive relaxed criteria). Applicant: appropriate qualifications for the role, age 18-60, no serious criminal record, good health. We screen both sides and advise on capital increases, Thai-staff hiring or restructuring needed before filing.

Core Documents Required

Company side: (1) Company affidavit (≤6 months), (2) Shareholders’ list (Bor.Or.Jor.5), (3) Latest financial statements, (4) Por.Por.20 (VAT registration), (5) Por.Ngor.Dor.50 and Por.Ngor.Dor.1 Kor for 4 Thai employees, (6) Org chart, (7) WP3 employment invitation. Applicant side: (1) Passport with 18+ months validity, (2) Diploma and transcripts, (3) Resume, (4) Prior employment letters, (5) Police clearance from home country, (6) Medical certificate, (7) Photos. Foreign documents require full legalization (notary + Apostille / legalization) and certified Thai translation.

Why a Legal Team for NON-B Filing

NON-B + Work Permit involves complex steps — company documents must match Department of Business Development records, applicant documents need multiple levels of legalization, and three agencies (embassy, Department of Employment, Immigration Bureau) must be coordinated. A single delay restarts the entire flow. We deliver a Gantt-style project plan, an 80-point checklist and end-to-end coordination on behalf of clients and companies — yielding 35-50 days from start to combined NON-B + Work Permit approval for reviewed cases.

12-Step Process

Clear, transparent and traceable workflow

Initial case assessment — eligibility check

Assess company status, capital, Thai-staff ratio and applicant qualifications after reviewing the documents.

Sign Fixed-Fee engagement

Bilingual agreement with transparent scope, timeline and fees.

Prepare WP3 employment invitation

Prepare WP3 and file with the Department of Employment for the invitation letter.

Collect applicant overseas documents

Diploma, employment letters, police clearance + Apostille / legalization.

Certified translation & notarization

Certified Thai translation + notarial attorney certification.

Apply NON-B at Thai Embassy abroad

Submit dossier and liaise with Thai embassies in many countries.

Enter Thailand & file Work Permit

Within first 90 days after arrival — file WP1 at the Department of Employment.

1-Year Extension of Stay

File 1-year extension at Immigration with Work Permit as primary document.

Re-Entry Permit

Issued before leaving Thailand — prevents automatic visa termination.

90-Day Reporting (TM.47)

Handle 90-day reports throughout the year — preventing fines and records.

TM.30 & Work Permit renewal

Monitor renewal dates and prepare documents 60 days in advance.

BOI / Smart Visa advisory if applicable

Advise on conversion to BOI or Smart Visa for enhanced benefits.

In-Depth Guide

Standard NON-B vs BOI vs Smart Visa — How to Choose

Standard NON-B suits companies operating in Thailand hiring foreigners for general roles — fast and requires no special approval. BOI Visa suits BOI-promoted companies — relaxed capital and Thai-staff requirements, faster approval via BOI One Stop Service. Smart Visa targets investors, experts, executives and startups in 13 priority industries — 4-year stay, no separate Work Permit required, and family inclusion. We analyze the client’s business model and recommend the path that saves the most time and money long-term.

NON-B & Work Permit Renewals — Common Pitfalls

NON-B 1-year extensions require the company to show "sufficient" performance — Immigration evaluates net profit and tax paid. Small or loss-making companies, or those not filing tax properly, may be rejected even if the applicant qualifies — forcing the holder to leave and restart. We audit employer-company health every 6 months and provide advance accounting/tax advice — reducing risk and ensuring smooth multi-year Work Permit renewals.

Family Visas — Dependent NON-O

NON-B holders may apply for NON-O Dependent visas for spouses and children under 20 — required documents include marriage certificate, child birth certificates and family-coverage financial documents. Dependent visas match the principal’s NON-B duration and renew together — but Dependents may not work unless converted to their own NON-B + Work Permit. We prepare family dossiers and coordinate joint filing with the principal — saving time and cost vs separate filings.

Upgrading to PR or Thai Nationality

NON-B holders working continuously in Thailand and paying tax for Lawyers Council–registered attorneys may apply for PR under the annual quota — requiring average salary ≥THB 80,000 (or ≥THB 100,000 annual tax) for the last 2 years. Fee: price on request. After 5 years of PR plus Thai-language proficiency and ability to sing the national anthem, citizenship may be sought. Our team has handled both PR and naturalization since 2010 and prepares long-term documents so clients can plan their Thai life with confidence.

Service Coverage — Thailand-Wide and Overseas

We serve companies in all 50 districts of Bangkok and 77 provinces — including major industrial estates (Laem Chabang, Amata City, Eastern Seaboard) and tourist provinces (Phuket, Pattaya, Chiang Mai) with many foreign-owned firms. Our HQ near MRT Phra Ram 9 sits close to the Department of Employment and the Immigration Bureau. For upcountry and overseas clients, we coordinate DHL/FedEx for documents and Zoom for consultation — companies need not send staff to Bangkok.

Non-Immigrant B Visa & Work Permit — Corporate Compliance Framework

Visa First, Work Permit Second, Tax Registration Third

Foreign employees of Thai-incorporated companies follow a strict three-stage onboarding sequence: Non-Immigrant B visa issued at a Thai embassy overseas (or a Non-O conversion inside Thailand for spouses of Thai nationals), work permit issued by the Department of Employment within 30 days of arrival, and Personal Income Tax (PND.91) registration with the Revenue Department within the first month of receiving Thai-source income. Skipping or reversing any step exposes both employer and employee to fines: working before work-permit issuance carries a fine of up to 50,000 THB on the worker and price on request on the employer under Section 9 of the Working of Aliens Act, while failure to register for PIT within the deadline triggers a back-assessment with surcharge interest. We coordinate all three stages from a single project plan so the employee can begin invoiced work on day one of arrival without compliance gaps.

Company-Side Eligibility Requirements

Not every Thai company is eligible to sponsor a Non-B work permit. The general rule under the Working of Aliens Act is that the company must have paid-up registered capital of at least 2,000,000 THB per foreign employee, employ four Thai nationals per foreign employee (BOI-promoted companies, US Treaty companies, and certain other categories have different ratios), and have filed at least one full fiscal year of audited accounts with the Department of Business Development. New companies (less than one year old) can sponsor work permits but receive only six-month initial work-permit terms instead of the standard one-year, and undergo additional documentary review at every renewal. BOI-promoted companies bypass most of these restrictions but must maintain compliance with the BOI-promotion conditions; revocation of BOI status during a foreign employee's visa period cancels the work permit immediately.

Common Compliance Failures During Work-Permit Renewal

At each annual renewal, the Department of Employment audits the company's ratio of Thai to foreign employees, social security registrations (which must show every Thai employee, not just a token number to maintain the ratio), corporate income tax filings (PND.50), and the personal income tax filings of the foreign employees (PND.91). Companies that have under-staffed their Thai-employee ratio, or that have employees on payroll for ratio purposes only without actual social security registration, are routinely caught at this audit and have foreign work-permit renewals refused until the ratio is corrected. The cleanest remedy is monthly compliance review rather than annual scramble — we offer this as a retained service for companies with multiple foreign employees, and it has eliminated work-permit renewal refusals across our retained portfolio.

Visa Extension Coordination and Multiple Re-Entry Permits

The Non-Immigrant B visa and the work permit have separate validity dates and must be renewed in sequence: the visa extension is filed at Immigration first, then the work-permit renewal at the Department of Employment is filed using the new visa expiry as the work-permit expiry. Filing in the wrong order means the work permit will be issued with a shorter expiry than the visa, defeating the purpose of the renewal. The multiple re-entry permit (price on request) is essential for any foreign employee who travels for business — without it, leaving Thailand cancels the visa and forces a fresh embassy application overseas. We file the visa extension, work-permit renewal, and multiple re-entry permit as a single coordinated workflow each year, and pre-position copies of all three documents with the company HR for inclusion in the employee's personnel file.

Compare NON-B + Work Permit Services

Criteria	Thai Notary Law	In-house HR / DIY	Generic Visa Agent	Big-4 Consulting
NON-B + BOI + Smart Visa coverage	✓ All 3 categories	△ NON-B only	△ NON-B only	✓ All 3 categories
Project Plan + 80-point Checklist	✓ Gantt + Status Report	✗	✗	△ Charged extra
PR + Citizenship Pathway Advisory	✓ Long-term planning	✗	✗	✓ Separate engagement

Step-by-step How-To

1
Initial case assessment — eligibility check
Assess company, capital, Thai-staff ratio and applicant qualifications within 24h.
2
Prepare WP3 + 7 company doc sets
WP3 + affidavit + Bor.Or.Jor.5 + Por.Por.20 + Por.Ngor.Dor.50 + org chart + JD.
3
Legalize applicant overseas documents
Diploma + police clearance + employment letters + Apostille / legalization + Thai translation.
4
Apply NON-B at Thai Embassy abroad
Submit dossier and liaise with Thai embassies in many countries — visa in 5-10 days.
5
Enter Thailand + file Work Permit (WP1)
Within first 90 days — file WP1 at Department of Employment — Work Permit in 7-15 days.
6
1-Year extension + 90-day reporting
File 1-year extension at Immigration 30 days before expiry + 90-day reporting — we manage Calendar + Reminders.

FAQ

Frequently Asked Questions

Legal Basis

Lawyers Act B.E. 2528 (1985)มาตรา 27 — Notarial Services Attorney
Notarial Services Attorneys in Thailand must hold a licence from the Lawyers Council of Thailand under the 2003 Notarial Services Regulation.
Read full text →
Hague Apostille Convention 1961HCCH Apostille
Thailand’s Apostille accession (30 June 2026) only enters into force on 28 February 2027 — documents require dual legalisation by MFA Consular Affairs and the destination embassy.
Read full text →

Common Pitfalls

Signature does not match passport
A signature or name that differs from the passport may trigger a request for more evidence. Check the recipient’s rule and bring original identification when signing before an officer or attorney is required.
Translation by an unregistered translator
Translator requirements depend on the receiving authority. Some accept a translator declaration; others specify a sworn or registered translator. Check the current list before translation starts.
Missing final embassy authentication
Before 28 February 2027, many Thai documents used abroad still need destination-embassy legalisation after the Department of Consular Affairs. The exact order depends on the document and recipient.

Related Services

Thailand Visa (Overview)

NON-O Marriage/Family

Work Permit

Retirement Visa

APEC Business Travel Card

Visa Document Translation

Start your Thailand NON-B Business Visa — Work, Invest and Operate Business in Thailand today

Send your document details for staff to assess the steps and timing before work begins.

094-895-8999 Request quote

Mon-Fri 09:00-18:00 • Sat–Sun 09:00–17:00 (ICT)

Key Takeaways

Company structured to 4:1 ratio and 2M capital
WP3, financials, PND.1 tax filings included

Service Areas — NON-B Visa

Choose a nearby area to see service details, pricing, and our team in your district or BTS/MRT station.

Immigration Attorney Analysis

E-E-A-T

Non-B Visa & Work Permit: The Compliant Workflow for Employers and Foreign Employees

Hiring a foreign national in Thailand is governed by the Emergency Decree on the Management of Foreign Workers B.E. 2560 (2017, as amended) read with the Immigration Act B.E. 2522. The correct sequence is: (1) the Thai employer must hold 2 million THB paid-up capital per foreign hire, satisfy the 4 Thai : 1 foreigner staff ratio, and be current on corporate tax and social-security filings; (2) issue a WP3 employment certification through the Department of Employment (DOE); (3) the applicant files the Non-B Visa at a Thai embassy or consulate abroad with the WP3, company affidavit, audited financial statements, tax certifications, and personal documents; (4) within 30 days of entry, file the Work Permit application at the DOE. The mistakes that derail cases: company documents older than 3 months, a job title that falls within the 27 reserved-occupations list, and minimum-salary thresholds that fail the DOE's nationality table (e.g. EU / US / Japan nationals require price on request monthly, other Asian nationalities price on request). For renewal, the 1-year Non-B extension and the 1-year Work Permit renewal must be filed together with PND.1 (last 3 months), prior-year PND.91, PND.50, audited financials, the Thai-staff register, and evidence of actual work performed. Falsified or materially-misstated documents trigger immediate revocation and a 5–10 year Blacklist entry. E-E-A-T Notice: Our team prepares notarized affidavits, powers of attorney, and MFA-certified translations for Work Permit cases across both Thai-owned and BOI / foreign-invested employers.

Primary Authority

Immigration Bureau · DOE · BOI · MFA Consular Affairs.

Legal Basis

Immigration Act B.E. 2522 · Foreign Workers Decree B.E. 2560 · LTR Royal Decree B.E. 2565.

Key Risk Points

Overstay, wrong-class work, un-legalized source documents, missed 90-day report.

Frequently Asked Questions

Authored by our immigration and notarial-services attorneys · Reviewed by a senior attorney (Lawyers Council of Thailand) · Sources: Royal Thai Police Immigration Bureau (immigration.go.th), Department of Employment (doe.go.th), BOI (boi.go.th), and MFA Department of Consular Affairs (consular.mfa.go.th) · General information only, not case-specific legal advice.

Six Notarial Services Attorneys Licensed by the Lawyers Council of Thailand

Notary License (1/6)

What you need to know

Quick Summary

Understanding Thailand NON-B Business Visa — Work, Invest and Operate Business in Thailand

Understanding NON-B and Its Connection to the Work Permit

Eligibility — Employer Company and Applicant

Core Documents Required

Why a Legal Team for NON-B Filing

Clear, transparent and traceable workflow

Initial case assessment — eligibility check

Sign Fixed-Fee engagement

Prepare WP3 employment invitation

Collect applicant overseas documents

Certified translation & notarization

Apply NON-B at Thai Embassy abroad

Enter Thailand & file Work Permit

1-Year Extension of Stay

Re-Entry Permit

90-Day Reporting (TM.47)

TM.30 & Work Permit renewal

BOI / Smart Visa advisory if applicable

In-Depth Guide

Standard NON-B vs BOI vs Smart Visa — How to Choose

NON-B & Work Permit Renewals — Common Pitfalls

Family Visas — Dependent NON-O

Upgrading to PR or Thai Nationality

Service Coverage — Thailand-Wide and Overseas

Non-Immigrant B Visa & Work Permit — Corporate Compliance Framework

Visa First, Work Permit Second, Tax Registration Third

Company-Side Eligibility Requirements

Common Compliance Failures During Work-Permit Renewal

Visa Extension Coordination and Multiple Re-Entry Permits

Compare NON-B + Work Permit Services

Step-by-step How-To

Initial case assessment — eligibility check

Prepare WP3 + 7 company doc sets

Legalize applicant overseas documents

Apply NON-B at Thai Embassy abroad

Enter Thailand + file Work Permit (WP1)

1-Year extension + 90-day reporting

All 50 Bangkok Districts & 77 Thai Provinces

Top Bangkok Districts

Top Provinces

Frequently Asked Questions

How long for NON-B + Work Permit?

Can a new company (under 1 year) apply?

Must the price on request M capital be fully paid-in?

Does the 4:1 Thai-staff ratio apply to all firms?

NON-B Single vs Multiple Entry difference?

If terminated, does NON-B end immediately?

Does 90-day online reporting work?

How is BOI Visa better than standard NON-B?

Can overseas clients use the service?

Total government fees?

Legal Basis

Common Pitfalls

Related Services

Thailand Visa (Overview)

NON-O Marriage/Family

Work Permit

Retirement Visa

APEC Business Travel Card

Visa Document Translation

Start your Thailand NON-B Business Visa — Work, Invest and Operate Business in Thailand today

Key Takeaways

Service Areas — NON-B Visa

Bangkok Districts

Provinces

BTS/MRT Stations

Non-B Visa & Work Permit: The Compliant Workflow for Employers and Foreign Employees

Primary Authority

Legal Basis

Key Risk Points

Frequently Asked Questions

How many Thai staff per foreign hire are required?

Which jobs are reserved for Thai nationals?

Six Notarial Services Attorneys Licensed by the Lawyers Council of Thailand

Notary License (1/6)

What you need to know