Educational Information Only
The content on this page is for general educational purposes and does not constitute legal advice. Every legal situation is unique. For matters involving investigation, arrest, litigation, or formal proceedings, consult a qualified legal professional.
Por.Por.21 — Extension of Stay Application (Police)
Extension-of-stay form historically used in some categories; mostly superseded by TM7 in current practice. Verify with the relevant Immigration office whether TM7 or Por.Por.21 applies to your category.
When Used
Per current Immigration notification — verify before filing.
Who Files
Foreign nationals seeking specific extension categories.
Fee & Logistics
THB 1,900 standard extension fee
Same day
Local Immigration office
Filing Method
- In-person at Immigration office
Required Documents
- Passport
- Current visa stamp
- Category-specific evidence
Field-by-Field Walkthrough
Full name
(ชื่อเต็ม)Surname and given names as shown on passport / national ID.
Passport number
(เลขที่หนังสือเดินทาง)Passport number; foreigner-relevant forms.
Common Mistakes
- Using legacy form when TM7 is the current standard
Legal Basis
Immigration Act B.E. 2522 (1979)
This walkthrough summarises the practical filing requirements for a Thai government form as a starting point. Fees, procedures, and required documents change without notice — always verify with the issuing authority before filing. Educational use only; not a substitute for advice from a Thai-qualified lawyer, accountant, or licensed visa agent.
Professional Legal Assistance
When a matter involves investigation, arrest, detention, litigation, or regulatory action, professional legal representation becomes essential.
Anglo Siam Legal provides experienced legal services across Thailand for both Thai nationals and foreigners.
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