Before a foreign hire in Thailand ever sees a payslip, an HR team needs three things in place: a valid Non-Immigrant B visa and work permit tied to that specific employee and role, registration with the Social Security Office (SSO) under Section 33, and a payroll process that withholds personal income tax correctly from day one. Miss any one of these and the company risks fines, a rejected work permit renewal, or a foreign employee who technically isn't allowed to be paid at all. Issa Compass works with companies across Thailand on the visa and work permit side of this exact process, which means the corporate services team sees, on a recurring basis, where HR departments get tripped up between the immigration paperwork and the payroll setup that has to follow it.
TL;DR
- A foreign employee needs a Non-Immigrant B visa and a work permit tied to a specific employer, job title, and location before they can legally be paid [sprout.co.th].
- Once employed legally, foreign staff fall under Section 33 of the Social Security Act with the same 5% employer and 5% employee contribution rate as Thai nationals, capped at THB 750 per party per month.
- Payroll tax withheld from salaries must be remitted using Form P.N.D. 1, due the 7th of the following month on paper or the 15th if filed electronically.
- Non-B sponsorship has its own company-side requirements (registered share capital and a Thai-to-foreign staff ratio) that are separate from payroll and SSO obligations.
- Getting the visa and work permit sequencing wrong is the most common reason a foreign employee's first paycheck gets delayed.
About the Author: This article draws on Issa Compass's corporate services work helping Thai-registered companies hire and onboard foreign employees, including work permit compliance and coordination with the visa side of the process, alongside insights from the platform's immigration consultants and legal team who track embassy and Ministry of Labour requirements as they change.
What Documents Does a Company Need Before Hiring a Foreign Employee in Thailand?
The starting point is legal employment authorization, not payroll software. Foreign employees in Thailand generally require a Non-Immigrant B visa and a valid work permit tied to a specific employer, job title, and location [sprout.co.th]. Without it, a company cannot legally register the employee for social security, cannot withhold tax against a valid employment record, and cannot run that person through normal payroll.
Required documentation for setting up a foreign hire typically includes a signed employment contract, a passport copy, and completed Social Security registration paperwork [globalli.io]. Think of the work permit as the ignition key and payroll as the engine: the engine can be fully built and ready, but nothing moves until the key turns. HR teams sometimes build out the payroll and benefits side first, assuming the visa is a formality that will catch up. It's the reverse dependency that causes delays.
What Are Thailand's Work Permit Requirements for Foreign Employees?
Work permit requirements in Thailand center on matching the employee to an eligible sponsoring company and an eligible role, not just having valid immigration status. Foreign professionals applying for a Non-Immigrant B visa are generally expected to hold relevant qualifications and professional experience, and their role must not fall under an occupation restricted to Thai nationals.
On the company side, the Non-B canonical requirements are separate from these employee-side qualifications. The sponsoring company needs 2,000,000 THB in registered share capital per foreign employee it wants to hire, plus a 4:1 Thai-to-foreign employee ratio, meaning at least 4 Thai employees per foreign hire with consistent SSO contributions for at least 3 months before the company becomes eligible to sponsor. These are the Non-B requirements. Foreign ownership caps under the Foreign Business Act are a separate consideration entirely, governing which business activities a foreign-owned company can engage in, not how many foreigners it can sponsor. Conflating the two is a common mistake, and one worth flagging early to avoid building a hiring plan around the wrong rule.
For companies weighing whether a role should go through the Non-B / work permit route versus a longer-term option like the LTR visa for senior professionals, it's worth reviewing the full range of Thai visa options and eligibility before committing to a structure.
How Much Does a Thailand Work Permit Cost?
Thailand work permit cost isn't a single line item; it sits inside a broader cost structure that includes the visa itself, the government issuance fee, and any service fee if a company uses a platform or firm to manage the process. HR teams budgeting for a foreign hire should separate these clearly: the government fee is paid directly to Thai authorities, while a bundled fee from a service provider includes that government fee plus a separate service charge on top. Exact current government fee amounts should be confirmed directly, since they can shift, and a company's finance team should never assume a bundled quote from any provider represents the government fee alone.
How Does the Thailand Social Security Card and SSO Registration Work for Foreign Employees?
Once an employee has a valid work permit, they don't get a different or lighter version of Thai social security, they get the same one. Foreign employees working in Thailand under a valid work permit are subject to the same SSO obligations as Thai nationals, with no separate exemption [omnihr.co]. Practically, this means registering the new hire with the SSO, issuing them a Thailand social security card, and starting monthly contributions from the first eligible payroll cycle.
Thailand's Social Security System does not require different enrollment procedures or contribution rates for foreign nationals. Under Section 33, registered foreign employees and Thai nationals are subject to the same mandatory 5% contribution rate and receive the same benefits. That rate is 5% of the employee's base salary from the employer and 5% from the employee, calculated on a base salary between THB 1,650 and THB 15,000, which caps the maximum monthly contribution at THB 750 per party. HR teams sometimes assume a foreign hire's higher salary means a proportionally higher contribution; because the contribution base is capped, it doesn't. The card and enrollment process itself is standard: it does not change based on nationality, only on whether the underlying work permit and Section 33 registration are in place.
One exception worth flagging for global mobility teams: foreign nationals with a valid Thai work permit are required to contribute to the Social Security Fund unless a bilateral exemption applies [sprout.co.th]. Companies moving employees between countries with a totalization-style agreement with Thailand should check this before assuming automatic enrollment applies uniformly.
What Are the Payroll Tax Withholding and Filing Deadlines HR Teams Need to Track?
Payroll compliance in Thailand runs on a monthly cycle that HR and finance need to treat as non-negotiable. Employers must withhold personal income tax from employee salaries and remit it to the Revenue Department using Form P.N.D. 1. The statutory deadline is the 7th of the following month for paper filings, or the 15th if filed electronically. Missing this deadline consistently, rather than occasionally, is what tends to draw scrutiny during compliance reviews, so building the filing date into a fixed monthly HR calendar rather than treating it as ad hoc is the more sustainable approach.
This deadline runs independently of visa renewal timelines, work permit extensions, or 90-day immigration reporting, which is a separate obligation entirely and not something payroll teams should conflate with tax filing dates.
How Should HR Teams Handle Foreign Employees Working Across Multiple Branches?
A related but distinct question companies run into once a foreign hire is settled in is what happens when the business wants that person working across more than one office or province. The recommended approach is to apply for the visa and work permit through the company's head office rather than through an individual branch. Once the visa and work permit are issued under the head office, the foreign employee can be assigned to, and physically work at, any of the company's branch locations without triggering a separate transfer process for the visa or work permit itself. This is worth building into HR planning from the outset, particularly for companies that expect to open additional locations, since retrofitting a branch-specific work permit later is far more disruptive than planning for head-office sponsorship upfront.
Frequently Asked Questions
Does a foreign employee need a work permit even for remote or part-time work in Thailand?
Yes, generally, any foreign national performing work in Thailand, including remote work for a Thailand-based entity, needs a valid work permit tied to that specific role and employer.
Is the social security contribution rate different for foreign employees than for Thai employees?
No. Registered foreign employees and Thai nationals are both subject to the same 5% contribution rate from employer and employee under Section 33, with the same contribution cap and the same benefits.
What qualifies an employee for a Non-B work permit?
Foreign professionals typically need relevant qualifications and professional experience for the role, and the position must not fall under an occupation restricted to Thai nationals under Thai law.
Can a company sponsor a foreign employee without meeting the 4:1 Thai staff ratio?
No. The Non-B canonical requirement includes both the registered share capital per foreign employee and the 4:1 Thai-to-foreign employee ratio, with at least 4 Thai staff having consistent SSO contributions for 3 months before the company can sponsor.
When is the payroll tax filing deadline in Thailand?
Form P.N.D. 1 for withheld payroll tax is due the 7th of the following month for paper filings, or the 15th if filed electronically.
Does the Foreign Business Act affect Non-B work permit eligibility?
Not directly. The Foreign Business Act governs which business activities a foreign-owned company can engage in; it is a separate consideration from the Non-B visa's capital and staffing requirements.
Should HR apply for a foreign employee's visa at each branch office separately?
No, the recommended approach is applying through the head office once, after which the employee can work across branch locations without a separate visa or work permit transfer process.
About Issa Compass
Issa Compass is a real-time visa platform that helps individuals and companies handle Thai visa applications through a guided workflow, backed by immigration consultants and a legal team for review and support. On the corporate side, Issa Compass assists businesses with hiring foreign employees, managing work permit compliance, and streamlining onboarding for international hires. The platform's decision engine checks applications against real-time embassy and government requirements, and the Issa Guarantee provides a full refund of both government and service fees for pre-qualified Full Service applications, where Issa Compass files on the client's behalf, that are rejected by immigration. For companies mapping out a foreign hire's visa pathway, from Non-B employment visas to longer-term options, finding the right visa for the situation is the first step before payroll and SSO setup can begin.
Setting up payroll and social security correctly the first time saves HR teams from unwinding compliance problems later. If your company is preparing to hire foreign talent in Thailand and needs the visa and work permit side handled clearly, get in touch with Issa Compass at Issa Compass.com.
