Corporate Secretarial · Scenario S.35
Register Your Company as a New SSO Employer in Thailand
A Thai company that hires its first employees must register with the Social Security Office within 30 days — establishing the employer account, obtaining the employer number, and enrolling each employee simultaneously. Monthly contribution remittances begin from the following month and continue for every employee on the payroll. UnionSPACE manages the full setup: obligations review, employer and employee registration forms, SSO filing, employer number issuance, and a compliance memo covering the ongoing contribution cycle — completed in 7–10 working days.
The SSO Registration Creates the Employer Account — Every Employee Is Then Enrolled Under It
The Social Security Office registration is not a one-time enrolment — it is the creation of the company's permanent SSO employer account. The employer number assigned at registration is the identifier used for every subsequent employee enrolment, monthly contribution remittance, and departure notification for the life of the company.
Getting the registration right at the outset — correct company details, correct area office, correct contribution rates assessed against the initial salary structure — avoids corrections that require follow-up filings and SSO correspondence later. The compliance memo UnionSPACE delivers at the point of registration gives the payroll team the practical information they need: contribution rates, monthly remittance deadlines, and the process for adding or removing employees going forward.
The 30-day statutory registration window runs from the first employee's start date. UnionSPACE completes the full employer and employee registration within 7–10 working days — comfortably within the statutory window for a company that engages us as soon as the first hire is confirmed.
How Much Does a New Company SSO Registration Cost in Thailand?
New Company SSO Registration
Fee Breakdown
All-inclusive. No hidden charges. No SSO office visits required.
Information & Document Verification
Company profile review, obligation assessment, employee details verification, and area office confirmation
THB 2,000
Preparation of SSO Application
Employer registration form and employee enrolment forms
THB 2,500
Printing & Disbursements
Document production and incidentals
THB 500
SSO Filing & Follow-Up
Submission, officer liaison, employer number issuance, and compliance memo delivery
THB 2,500
Total Fee. Everything included.
New Company SSO Registration — Full Setup
Obligations review through employer number and compliance memo — 7–10 working days
Total fee
THB 7,500
Revenue Department registration also needed?
Employee TIN and withholding tax setup — we coordinate both in parallel
See also
Scenario S.34
Prices shown in Thai Baht (THB) and exclude VAT. Monthly SSO contribution remittances are handled as part of the monthly accounting and payroll service.
Get Started Talk to UsThe statutory registration deadline is 30 days from the first employee's start date. Engage us as soon as the first hire is confirmed — the 7–10 working day process fits within the 30-day window. Monthly contribution remittances begin from the month following registration and are due by the 15th of each subsequent month.
What Is Included in the New Company SSO Registration Package?
Full employer setup — from obligations review to employer number and compliance memo
Standard Package
New Company SSO RegistrationFixed fee THB 7,500 |
|---|
| Company SSO obligation assessment | |
| Employee eligibility and contribution rate confirmation | |
| Company documents and director details verification | |
| Employee identity and salary details verification | |
| SSO area office identification | |
| SSO employer registration form preparation | |
| SSO employee enrolment form preparation | |
| Submission to the SSO area office | |
| SSO officer liaison and query management | |
| SSO employer number — delivery confirmation | |
| Employee enrolment confirmation records | |
| SSO compliance memo — contribution rates, deadlines, ongoing obligations | |
| Monthly SSO contribution remittances | Accounting service |
| Revenue Department employee TIN registration | Scenario S.34 |
Prices are fixed and transparent. Shown in Thai Baht (THB) and exclude VAT. Monthly SSO contribution remittances and Revenue Department withholding tax filings are handled as part of the monthly accounting and payroll service.
Three Things the SSO Registration Sets Up for the Life of the Company
The employer account created here is used for every employee, every month, going forward
The Employer Number
The SSO employer number is the permanent identifier assigned when the company registers as an employer. It is required for every monthly contribution remittance, every new employee enrolment, every employee departure notification, and every SSO correspondence for as long as the company employs anyone. Getting the registration right at the outset — correct company details, correct area office — means the employer number is clean and usable from day one.
Monthly Contribution Cycle
From the month of registration, contributions for all enrolled employees are due by the 15th of each following month — every month, without exception. Both the employer's 5% and the employee's withheld 5% are remitted together, capped at THB 750 per party per employee per month. Late payment attracts a 2% per month surcharge. The compliance memo delivered at registration confirms the exact monthly remittance obligations and deadlines.
Ongoing Employee Management
Every new employee hired after the initial registration must be enrolled with the SSO within 30 days of their start date. Every departing employee must be notified to the SSO within 15 days of their last day. These are ongoing obligations that run for the life of the employment relationship — not a one-time registration. The compliance memo sets out the exact process and deadlines for both enrolments and departures.
From obligations review to employer number and compliance memo — what happens at each stage
How We Manage New Company SSO Registration in Thailand
Company & Obligation Review
We review the company's profile — registered address, authorised signatory, and the details of all employees being enrolled — to confirm the registration obligations and identify the correct SSO area office. We assess the contribution rates applicable to each employee's salary and calculate the monthly remittance amount the payroll team will need to plan for from the first contribution due date.
The SSO area office responsible for the registration is determined by the company's registered address. Using the wrong area office causes the application to be redirected and delays the employer number issuance. We confirm the correct office before any form is prepared.
Document Verification & Form Preparation
We collect and verify the company affidavit, director identity documents, and employee details — names, Thai ID numbers or passport numbers, start dates, and salary figures. We prepare both the employer registration form and the employee enrolment forms. Where a Power of Attorney is needed for the submission, we prepare it as part of this stage.
The employee details on the enrolment forms must exactly match the employees' identity documents — discrepancies in name spelling or ID number cause the SSO to reject individual enrolments and require resubmission. We verify each employee's details against their identity documents before the forms are finalised.
SSO Submission, Employer Number & Compliance Memo
We submit the complete registration package to the SSO area office, manage all officer liaison, and confirm the employer number once registration is processed. We deliver the enrolment confirmation records for each employee and a compliance memo covering the monthly contribution structure, remittance deadlines, and the process for future employee enrolments and departures.
The compliance memo is the practical handover document for the payroll team — it specifies the employer number, the monthly remittance amount for the current employee headcount, the deadline (15th of each following month), and the process for adding and removing employees going forward. It is the starting point for the company's ongoing SSO compliance, not just a registration receipt.
- Document collection and preparation: 2–4 working days.
- SSO submission and processing: 5–6 working days (office-dependent).
- Total end-to-end: 7–10 working days.
- Statutory deadline: 30 days from first employee's start date.
Frequently Asked Questions — New Company SSO Registration in Thailand
Answers to the questions we are asked most often
Within 30 days of hiring the first employee. The registration creates the employer account and assigns the employer number used for all subsequent contribution remittances and employee management. Missing the deadline results in penalties and continued liability for unremitted contributions from the date employment began. The 7–10 working day registration process fits comfortably within the 30-day window for companies that engage us as soon as the first hire is confirmed.
The SSO employer number is the unique identifier issued to the company at registration. It is required for all monthly contribution remittances, all employee enrolments, all departure notifications, and all SSO correspondence for the life of the company. Once assigned, it does not change — it is the company's permanent SSO identity.
Both the employer and the employee each contribute 5% of the employee's monthly salary, calculated on a salary base capped at THB 15,000. The maximum per party is THB 750 per employee per month. The employer withholds the employee's 5% from salary and remits both portions to the SSO by the 15th of the following month. Late payment attracts a 2% per month surcharge.
Yes. Foreign employees working in Thailand on a valid work permit are subject to the same SSO contribution obligations as Thai employees and are enrolled through the same process. The enrolment form uses the employee's passport number rather than a Thai national ID. We handle both domestic and foreign employee enrolments as part of this service.
Monthly contributions for all enrolled employees must be remitted by the 15th of each following month. New employees must be enrolled within 30 days of their start date. Departing employees must be notified to the SSO within 15 days of their last day. The compliance memo delivered at registration covers all of these obligations with specific deadlines and the forms required for each type of transaction.
Yes. SSO registration and Revenue Department employee TIN and withholding tax registration are separate filings with separate agencies, but both are required for a new company taking on employees. UnionSPACE handles each as a distinct service and can coordinate them in parallel to minimise the overall turnaround time.
Related Corporate Secretarial Services
Register Foreign Employee at Revenue Department
Employee TIN and withholding tax setup — coordinate with SSO registration. THB 6,500
Register First Employee with SSO
Simplified first employee SSO registration for companies with a single hire. THB 5,500
Terminate Employee (SSO Update)
Notify the SSO within 15 days when an employee leaves. THB 7,000
Accounting & Tax Reporting
Monthly payroll, SSO remittances, withholding tax, and financial statements. From THB 8,500/month
Work Permit Application
Required before foreign employee SSO enrolment can be submitted. From THB 38,000
Change Registered Office Address
Address change requires updating the SSO employer registration. From THB 16,500
30 Days From the First Hire — Employer Account and Employer Number
The Employer Number Is Used Every Month — For Every Employee — Forever
The SSO employer account created at registration is the foundation of the company's entire social security compliance structure. Every monthly remittance, every new hire, every departure — all use the employer number assigned at this registration. Set it up correctly once.
THB 7,500 — obligations review, employer number, employee enrolment & compliance memo. 7–10 working days.
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