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Thai Tax Identification Number (TIN) for foreigners — Thailand
Document Checklist
แบบ ล.ป.10.1 (Baeb L.P. 10.1)
Form L.P. 10.1
Where to get: Picked up in hardcopy at the Area Revenue Office (สำนักงานสรรพากรพื้นที่ — Samnakngan Sapphakon Phuenthi); the Revenue Department English TIN page does not link a downloadable PDF of the form
Used by: Individual applicants — including foreigners and those without a Thai Personal Identification Number (PIN)
Cost: Free at the counter
Form L.P. 10.1 is the individual-taxpayer registration form. Companies use L.P. 10.3 and withholding-tax income payers use L.P. 10.4 — different forms, different filing windows.
หนังสือเดินทาง (Nangsue Doen Thang)
Passport
Required: Original presented at the counter, plus a signed photocopy of the identity and visa pages
Accepted: Any valid foreign passport; the Revenue Department TIN page lists photocopy of passport, alien certificate, or PIN card as accepted identification
Cost: Free
Each photocopy page must be signed by the applicant as a true copy. Unsigned photocopies are returned by Area Revenue Office staff.
ใบอนุญาตทำงาน (Bai Anuyat Tham Ngan — Work Permit)
Long-term visa or work permit
Required for: Foreigners present in Thailand beyond tourist limits — Area Revenue Office staff routinely request evidence of permission to stay
Accepted: Non-Immigrant B visa, Destination Thailand Visa (DTV), Long-Term Resident Visa (LTR), Smart Visa, retirement visa, or work permit
Cost: Free at the TIN counter
The Revenue Department TIN page does not formally enumerate the visa or work permit on its document checklist; in practice the Area Revenue Office requests it as evidence of permitted long stay.
ทะเบียนบ้าน (Thabian Ban — House Registration / Yellow Book for foreigners)
Proof of Thai address
Accepted: House Registration (Thabian Ban) where the applicant has a registered Thai address; foreigners on long-stay visas often hold a Yellow Book issued by the local district office; rental contract or hotel registration where Yellow Book is not held
Required: Confirms the residential address that determines which Area Revenue Office has jurisdiction
Cost: Free to present; obtaining the Yellow Book is a separate procedure at the local district office
If the residential address differs from records on the identification, Area Revenue Office staff may request proof of address change.
หนังสือมอบอำนาจ (Nangsue Mop Amnat)
Authorisation letter
Required for: Cases where a representative files Form L.P. 10.1 on behalf of the applicant
Accepted: Standard authorisation letter format; the representative presents their own passport copy alongside
Cost: Free; certified translation costs apply if the letter is in a foreign language
The Revenue Department TIN page lists the authorisation letter among acceptable supporting documents for individual TIN applications.
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