Thai vehicle-tax due date and surcharge
Count days and estimate the 1% late annual-tax surcharge from a user-confirmed month-or-part count.
How to use it
- Enter the expiry date and the annual vehicle-tax amount shown in your records.
- Confirm the number of late months or parts of a month with the competent authority before entering it.
- Review the estimated 1% surcharge and the exclusions before payment.
Important limitation
This does not query DLT records, infer the legal period count, calculate compulsory-insurance fines or support vehicles whose tax has lapsed for three years.
The interactive form is fully localized in English.
Reviewed 2026-09-23; next review 2026-12-23.
The 1% vehicle-tax surcharge per month or part has been checked. Users must confirm the tax base and period count. Compulsory-insurance fines and vehicles unpaid for three years are excluded.
Sources
พระราชบัญญัติรถยนต์ พ.ศ. 2522 และที่แก้ไขเพิ่มเติม — ฉบับรวมสำนักกฎหมาย กรมการขนส่งทางบก · opens in a new tabSupports the legal basis for annual vehicle tax and the surcharge per month or part. The tool does not infer the period count from dates.Source checked 2026-09-23คู่มือชำระภาษีรถประจำปี — เงินเพิ่มกรณีชำระล่าช้ากรมการขนส่งทางบก / ศูนย์รวมข้อมูลเพื่อติดต่อราชการ · opens in a new tabSupports the 1% per-month late annual-tax surcharge. Users must confirm the tax base and month-or-part count.Source checked 2026-09-23เงื่อนไขบริการชำระภาษีรถผ่านอินเทอร์เน็ต — สถานะทะเบียนกรมการขนส่งทางบก · opens in a new tabSupports the limitation that registration may be suspended after three consecutive unpaid years; the estimator therefore accepts at most 35 periods.Source checked 2026-09-23พระราชบัญญัติคุ้มครองผู้ประสบภัยจากรถ พ.ศ. 2535 และที่แก้ไขเพิ่มเติมสำนักงาน คปภ. · opens in a new tabSupports the insurance duty and prohibition on using an uninsured vehicle under sections 7 and 11. The tool does not determine offences or calculate fines.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.
- Added a sourced vehicle-tax surcharge estimate
Added the 1% per month-or-part estimate from a user-confirmed base and count, stopped before three unpaid years and excluded compulsory-insurance fines.
- Current review snapshot recorded
The 1% vehicle-tax surcharge per month or part has been checked. Users must confirm the tax base and period count. Compulsory-insurance fines and vehicles unpaid for three years are excluded.
Method version: review-2026-09-23