Social Security Registration Services for Employers and Employees (Section 33)
Employers with 1 or more employees must register as an employer and register their employees as insured persons under Section 33 with the Social Security Office (SSO) within 30 days from the date they first have employees. Greenpro KSP handles social security registration for both parts, from checking documents and completing Form SPS 1-01 (employer registration) and Form SPS 1-03 (employee registration), to filing with the Social Security Office, until you receive your employer account number and e-Service login credentials. Service fees start at 2,000 baht, and there is no government fee for registration.
Support for Meeting Social Security
Registration Deadlines
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What Is Social Security Registration, and Who Must Do It?
Social security registration for a business has 2 parts that must be done together:
- Employer registration with Form SPS 1-01, so the business receives an employer account number. This form registers the business with both the Social Security Fund and the Workmen’s Compensation Fund at the same time.
- Registering employees as insured persons under Section 33 with Form SPS 1-03. If an employee already has a social security card from a previous workplace, use Form SPS 1-03/1 (registration of a previously insured employee).
Which Businesses Must Register?
- Limited companies and partnerships hiring their first employee
- Shops, restaurants, cafés or sole proprietorships that have employees, even just 1
- Online shops that hire admins or packing staff
- Businesses whose owners are foreign nationals but that hire staff in Thailand
- Foundations, associations, condominium juristic persons and housing estates, which must additionally attach their bylaws or the meeting minutes appointing the manager
Employees who must be registered as insured persons under Section 33 are employees aged not less than 15 and not more than 60, including probationary employees and foreign employees with work permits. For daily-wage, part-time and short-term contract employees, read “Which employees must join social security?”
What Greenpro KSP Handles for You
- Check whether the business and each employee meet the conditions for insured persons under Section 33
- Prepare and complete Forms SPS 1-01 and SPS 1-03, together with attachments and a power of attorney
- File with the Social Security Office for the area where the business is located (Bangkok and surrounding provinces)
- Request an e-Service user ID so the employer can report hires and departures and pay contributions online themselves
- Summarize the monthly and annual deadlines the employer must meet after registration
Social Security Registration Steps with Greenpro KSP
| Step | Details | Estimated time |
|---|---|---|
| 1. Consultation and sending information | Tell us the employment start date, the number of employees and their wages, then send the documents via LINE or email | 1 day |
| 2. Checking documents and completing forms | Our team completes SPS 1-01 and SPS 1-03 and sends them to the employer for signature | 1–2 business days |
| 3. Filing at the Social Security Office | Our team files on your behalf (Bangkok and surrounding provinces), or the client takes the document set to file themselves (other provinces) | Officials check and review on the filing day when the documents are complete |
| 4. Receiving the results | You receive the employer account number, contribution rate, contribution assessment notice and e-Service login | About 3–5 business days in total after complete documents are received |
Required Documents
| Juristic person (company / partnership) | Sole proprietor (individual) |
|---|---|
| Form SPS 1-01 (completed by our team) | Form SPS 1-01 (completed by our team) |
| 13-digit juristic person registration number (Form SPS 1-01 does not require attaching the company affidavit) | Copy of the business owner’s national ID card |
| Copy of the national ID card of the authorized director (foreigners use a passport, work permit or visa) | Lease agreement or letter of consent to use the premises |
| Location map and photos of the business premises | Location map and photos of the business premises |
| Power of attorney with stamp duty affixed, together with a copy of the grantor’s ID card (prepared by our team) | Power of attorney with stamp duty affixed, together with a copy of the grantor’s ID card (prepared by our team) |
Documents for each employee: Form SPS 1-03 (completed by our team), copy of the national ID card, start date, position and wage. Foreign employees use a copy of the work permit together with a passport or alien identification card.
Deadlines Employers Must Remember After Registration
| Matter | Form used | Deadline |
|---|---|---|
| Registering the employer and the first group of employees | SPS 1-01 + SPS 1-03 | Within 30 days from the date of having the first employee |
| Reporting new employees | SPS 1-03 or SPS 1-03/1 | Within 30 days from the start date |
| Reporting employee departures | SPS 6-09 (notice of termination of insured status; state the reason for leaving) | By the 15th of the following month |
| Reporting changes to insured person details, such as name or marital status | SPS 6-10 (notice of change in insured person details) | By the 15th of the following month |
| Deducting and remitting monthly contributions | SPS 1-10 (contribution remittance form) | By the 15th of the following month |
| Workmen’s Compensation Fund contributions (paid by the employer only) | According to the SSO’s assessment notice | Once a year in January; in the first year, pay within 30 days from the date the obligation to pay arises |
Social Security Contributions for 2026
Employers and employees each contribute 5% of wages, calculated on a minimum wage base of 1,650 baht and a maximum of 17,500 baht per month, effective from January 1, 2026 under the Ministerial Regulation announced on December 12, 2025. Employees earning 17,500 baht or more therefore have a maximum deduction of 875 baht, and the employer contributes another 875 baht per month. The maximum base will rise to 20,000 baht in 2029 and to 23,000 baht from 2032.
| Monthly wage | Employee deduction | Employer contribution |
|---|---|---|
| 12,000 baht | 600 baht | 600 baht |
| 17,500 baht or more | 875 baht | 875 baht |
Social Security Registration Service Fees
- Service fees start at 2,000 baht, depending on the area and the service format: either our team prepares a complete document set for the client to file themselves, or our team files everything on your behalf in Bangkok and surrounding provinces.
Prices do not include 7% VAT · No government fee: registering as an employer with the Social Security Office is free of charge · Monthly contributions and Workmen’s Compensation Fund contributions are paid by the employer directly to the Social Security Office and are not included in the service fee.
Examples of Our Work
A newly opened coffee shop in Bangkok (a sole proprietorship) hired 3 full-time employees at once in its first month. The owner was not sure which forms to file and had less than 30 days left. Our team checked the documents, completed Forms SPS 1-01 and SPS 1-03, and filed them at the local Social Security Office, obtaining the employer account number and e-Service login within the deadline. After that, the owner could report employee hires and departures and pay monthly contributions through the online system themselves.
Frequently Asked Questions About Social Security Registration
Do I need to register for social security if I have only one employee?
Yes, you must register. The social security law applies to employers with 1 or more employees. The employer must file the employer registration form and register the employees as insured persons within 30 days from the date of having employees.
What is the penalty for registering for social security more than 30 days late?
Employers who do not file the forms within the deadline face imprisonment of not more than 6 months, or a fine of not more than 20,000 baht, or both. If contributions are remitted late, a surcharge of 2% per month on the unremitted contributions must be paid.
How much must employers pay in Section 33 social security contributions in 2026?
Employers and employees each pay 5% of wages, calculated on a minimum wage base of 1,650 baht and a maximum of 17,500 baht per month from January 1, 2026. Each side therefore pays a maximum of 875 baht per month, which must be remitted by the 15th of the following month.
Can a sole proprietor register themselves as an insured person under Section 33?
No. A sole proprietor has the status of an employer, so they cannot register as an insured person under Section 33 in their own business. If you want coverage for yourself, ask the Social Security Office about registering as a voluntary insured person.
Do foreign employees need to join social security?
For foreign employees working legally, the employer must register them as insured persons just like Thai employees, within 30 days from their start date, attaching a copy of the work permit together with a passport or alien identification card. See the detailed steps in the article on employer registration in the social security system.
After registering a company, do I still need to register as an employer?
Companies or partnerships registered with the Department of Business Development (DBD) are automatically registered as employers with the Social Security Office (the department shares the data), so they have an employer account number from the time the company is registered (companies registered before this system may not have one yet). However, when you start hiring employees, the employer must still register the employees as insured persons within 30 days every time. We check your employer account status before starting work to avoid duplicate filing.
How do I notify social security when an employee resigns?
The employer must report the termination of insured status with Form SPS 6-09, stating the reason for leaving, by the 15th of the month following the month in which the employee left. This can be done through the e-Service system or by filing at the Social Security Office.
How many days does social security registration take?
Generally about 3–5 business days after complete documents are received. Review at the Social Security Office does not take long when the documents are complete; the most time-consuming part is usually collecting the documents and the employer’s signatures.
Does the service fee include social security contributions?
No. The service fee covers preparing documents and filing the registration. Monthly contributions and Workmen’s Compensation Fund contributions are remitted by the employer directly to the Social Security Office, and there is no government fee for employer registration.
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Consult Us About Social Security Registration
Tell us your business type, the number of employees and the employment start date, and our registration team will let you know the documents to prepare and how much time remains before the deadline.
Address: 43 Thai CC Tower, 11th Floor, Room 111, South Sathorn Road, Yannawa, Sathorn, Bangkok 10120
Phone: 094 864 9799
LINE Official Account: @greenproksp
E-mail: surapa@greenproksp.com