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Thailand Work Permit Renewal — 4:1 Ratio & Salary Compliance

Renew your Thai Work Permit and Non-B extension in one coordinated filing. NYC audits accounting, payroll and social-security records first, then handles both the Department of Employment and Immigration counters in a single week.

Cases/month
60+
Ratio
4 Thai : 1 foreign
Min. salary
THB 25K–50K
Service from
THB 12,000
Quick answer

You must file WP.5 at the Department of Employment and a Non-B extension at Immigration in the last 30 days of the current permit. Compliance requires a nationality-based minimum salary (US/UK 50K, EU 45K, China/India 35K, ASEAN neighbours 25K), a 4:1 Thai-to-foreign staff ratio and THB 2M paid-up capital per foreign hire. NYC service fee THB 12,000 plus THB 4,900 government fees.

2025 nationality-based salary bands

USA/CA/UK/JP/AU/EU/NO/CH: THB 50,000. Advanced-Asia (KR/SG/TW/HK): THB 45,000. China/India/Middle East: THB 35,000. ASEAN neighbours (MM/LA/KH/VN): THB 25,000. Payroll slips and PND.1 must match reality — inflated payroll triggers revocation and criminal liability for the director.

The 4-to-1 Thai staff ratio

The Department of Employment requires four Thai employees per foreigner and THB 2,000,000 paid-up capital per foreign hire. Exemptions apply to BOI, EEC, US Treaty of Amity companies and IEAT industrial-estate tenants. NYC monitors social-security records so mid-year Thai resignations do not sink the renewal.

Three-year financial trail

The company must show profit or a rolling loss no worse than three consecutive years — otherwise a paid-up capital top-up is required. Officers review PND.50 (annual), PND.51 (mid-year) and PP.30 (VAT) for the last 12 months. NYC reconciles books with your accounting firm before filing.

Job-title or branch changes

Job or branch changes require WP.14 within 15 days (penalty THB 100 per day). The new position must fall within the 39 permitted occupations (excluding hairdressing, tour-guiding and farming). NYC maintains the 2025 occupation list plus title-mapping guidance.

SMART Visa / LTR alternatives

Executives earning THB 200,000+ per month or working in S-Curve industries can switch to SMART Visa (4 years, no WP required) or LTR-WFTP (10 years, family included). NYC's OSS team evaluates the trade-off and files through BOI on your behalf.

How it works

  1. 1. Company file

    Company affidavit (<30 days), shareholder list, 2 years of financials, PND.51/50 tax filings, and the last 3 months of SPS.1-10 social-security returns.

  2. 2. Employee file

    Passport, valid Non-B, employment contract, 3-month payroll statement, and PND.1 withholding tax filings.

  3. 3. Ratio audit

    Confirm four Thai employees per foreigner via SSO records (BOI/EEC firms are exempt). NYC pre-checks each month's payroll before submission.

  4. 4. Submit WP.5

    File 30 days before expiry; fee THB 3,000 per year (or THB 1,500 for six months). Collection in 5-7 business days.

  5. 5. Non-B extension

    Once the new WP is issued, file TM.7 + WP + employer letter at Immigration for THB 1,900. Extension is stamped along with the 90-day report.

FAQ

Do I renew WP and Non-B together?

You must — Work Permit first, then a Non-B extension within 7 business days. NYC blocks paired appointments the same week.

Can a 6-month-old company renew?

Yes with at least 3 months of PP.30 filings, four Thai staff on SSO, and a trial balance showing preliminary profit.

The foreign CEO left — now what?

File form WP.14 to cancel the departing executive's work permit within the statutory deadline, then apply with WP.3 for the replacement. The company must again show the full paid-up capital per foreign employee and maintain the four Thai staff to one foreigner ratio at the time of the new filing.

What if the new WP is delayed past expiry?

Stop working immediately and request an 'Under Consideration' letter from DoE — this preserves the Non-B until the new book is issued.

Is the 6-month permit cheaper overall?

The government fee for a six-month permit is lower than for a twelve-month one, but you double the number of filings, medical certificates and supporting document sets in a year. Once service work is counted, the annual permit is normally the cheaper and less disruptive option for a settled employee.

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