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Payroll, Social Security & Workmen's Compensation
An employer with one or more employees must register as an employer and enrol insured persons within 30 days of hiring under the Social Security Act B.E. 2533. Section 33 contributions are ordinarily 5 percent from each side on a monthly wage ceiling of THB 17,500, maximum THB 875 per person per side from 1 January 2026 through 31 December 2028; check temporary reductions. Contributions are not registration fees, remitted with form SPS.1-10 by the 15th of the following month. Separately, the employer funds the Workmen's Compensation Fund under the Compensation Act B.E. 2537. Contribution rates have been temporarily reduced by ministerial regulation in the past, so confirm the rate applying to the month being filed.
Updated August 2026 and based on the Revenue Code and related legislation. Rates and e-Filing extensions change — verify with the Revenue Department (rd.go.th) before acting.
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Official sources — accounting, tax, social security
The information on this page follows the official sources below. Always check the latest version before you file.
- Revenue Department — Revenue Code, income tax, VAT— Revenue Department
- Social Security Office— Social Security Office
- Department of Business Development — company registration— Department of Business Development
- Office of the Council of State — Thai law database— Office of the Council of State
- Board of Investment (BOI) / LTR Visa— Thailand Board of Investment
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