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STM.9 Acknowledgement of Penalties for Visa Overstay

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How it works

  1. 1

    Write in the chat

    In any language, with a photo of your passport data page.

  2. 2

    Check the fields

    The assistant fills in your name, age, nationality, passport number and the date.

  3. 3

    Download the PDF

    Print, sign and hand it to the immigration officer.

About the document

Country:
Thailand
Category:
Visa documents
How to fill:
Chat in any language → original form → PDF
Price:
from 15 credits
Last updated:

What this document is

STM.9 (แบบ สตม.๙, “The Acknowledgement of penalties for visa overstay”) is an official Thai Immigration Bureau form. By signing it, a foreigner confirms being aware of the re-entry bans that apply to those who stayed in Thailand after their permitted stay expired.

The rules come from Minister of Interior Order No. 1/2558 dated 27 November 2015 on classes of aliens ineligible for admission to the Kingdom, under the Immigration Act B.E. 2522 (1979). The form is signed by the foreigner who overstayed. It is not an application or a receipt: the overstay fine is handled separately.

Re-entry bans printed on the form

If the foreigner surrenders voluntarily:

  • overstay of more than 90 days — banned from entering for 1 year;
  • more than 1 year — 3 years;
  • more than 3 years — 5 years;
  • more than 5 years — 10 years.

If the foreigner is apprehended and prosecuted: overstay of less than 1 year — 5-year ban, more than 1 year — 10-year ban.

What the form asks for

  • location (ที่ทำการ) and date of signing — the year in the Buddhist Era (พ.ศ.);
  • title (นาย/นาง/นางสาว — Mr./Mrs./Ms.), family name, given name, middle name;
  • age and nationality;
  • passport number;
  • signature — by hand.

What to have with you

  • the passport you stayed in Thailand on;
  • any documents the immigration officer asks for.

Check the overstay fine amount, how to pay it and the full document list with the officer at the immigration checkpoint or office handling your overstay or departure.

How to fill it in with FoxDocs

  1. Open the chat on this page and write in any language.
  2. Send a photo of your passport data page or answer the questions — the assistant fills the boxes and marks your title.
  3. Check the fields and download the PDF.
  4. Print, sign and hand it to the immigration officer.

Sources

Official STM.9 form: STM-9-FORM-2025.pdf (Bangkok Immigration Division); Thai Immigration Bureau immigration.go.th. Checked on 2026-10-08. This is not legal advice.

Frequently asked questions

Who signs form STM.9?

A foreigner who stayed in Thailand after their permitted stay expired (overstay). The form confirms they are aware of the re-entry bans.

How long is the re-entry ban for overstay?

According to the form: if the foreigner surrenders — 1 year for an overstay of more than 90 days, 3 years for more than 1 year, 5 years for more than 3 years, 10 years for more than 5 years. If apprehended — 5 years for less than 1 year, 10 years for more than 1 year.

Is this a fine payment receipt?

No. STM.9 is an acknowledgement of penalties. The overstay fine is handled separately; check the amount with the immigration officer.

Where is the form signed?

At the immigration checkpoint or office handling your overstay or departure — that place goes in the “ที่ทำการ / Location” box.

Which year goes into the date?

The form says “พ.ศ.” — the Buddhist Era year (2026 → 2569). FoxDocs converts it automatically.

What is the legal basis for the ban?

Minister of Interior Order No. 1/2558 dated 27 November 2015, under the Immigration Act B.E. 2522 (1979).

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