Thailand social security contribution estimator
Estimate a normal Section 33 employee contribution using the displayed wage base and period.
How to use it
- Confirm that normal Section 33 employee coverage applies.
- Enter the monthly wage for the displayed contribution period.
- Review the capped wage base and rounding; check official guidance for any special reduction.
Important limitation
The displayed floor and ceiling follow the cited regulation for the stated period; special contribution reductions and other insured-person sections are outside scope.
The interactive form is fully localized in English.
Reviewed 2026-09-23; next review 2026-12-23.
The 2026–2028 Section 33 wage base and SSO-form rounding rule have been checked. Special temporary contribution reductions are excluded.
Sources
กฎกระทรวงกำหนดค่าจ้างขั้นต่ำและขั้นสูงที่ใช้เป็นฐานในการคำนวณเงินสมทบของผู้ประกันตนตามมาตรา 33 พ.ศ. 2568สำนักงานคณะกรรมการกฤษฎีกา · opens in a new tabSupports the THB 1,650–17,500 wage base for 2026–2028, excluding temporary contribution reductions.Source checked 2026-09-23แบบ สปส.1-10 ส่วนที่ 2 คำชี้แจงข้อ 4สำนักงานประกันสังคม · opens in a new tabUsed only for half-baht-up contribution rounding, not the old wage ceiling printed on the form.Source checked 2026-09-23Review history
This is the recorded review history available in the repository, not an inferred release history. Dates are added only when evidence is recorded.
- Current review snapshot recorded
The 2026–2028 Section 33 wage base and SSO-form rounding rule have been checked. Special temporary contribution reductions are excluded.
Method version: review-2026-09-23