TM.7 Form for a Thailand Visa Extension

The only official copy I could download is on Samut Prakan Immigration's forms page, a two-page PDF scan printed by the Police Printing Office in 2020. The Immigration Bureau's main site and Bangkok Immigration's site blocked access when I tried, and the Chiang Mai and Phuket office pages don't post the file. The form is the same national ตม.7 wherever you hand it in.

That copy has one quirk. The "Written at" line already says ตม.จว.สมุทรปราการ บก.ตม.3, which is Samut Prakan Immigration. If you're applying anywhere else, cross it out neatly and write the office you're at, or take a blank form from the counter on the day. Visa services say the office where you apply hands them out, so you don't have to arrive with one.

If you're applying online through e-Extension, you fill in the same form, scan it and upload it with your other documents. Online doesn't replace the TM.7.

Every year on the TM.7 sits beside พ.ศ., the Buddhist Era used on Thai government forms. Add 543 to the Western year, so 2026 is 2569, 2025 is 2568 and a birth year of 1988 is 2531. The form wants it for today's date, your date of birth, your passport's issue and expiry dates and your arrival date, five places in all.

Writing 2026 means correcting five dates in pen at the counter, which leaves a messy form. Your entry stamp may print the date in the Western calendar, so convert that one too.

The form still asks for your Arrival/Departure Card TM.6 number, a paper card that was replaced by the Thailand Digital Arrival Card on 1 May 2025. The form hasn't been reprinted since, so the line is still there.

Visa services say to write your TDAC number in it, the number the official TDAC manual calls the TH Digital Arrival Card No. That's what applicants commonly do, and I'd do the same, keeping the TDAC confirmation on your phone in case the officer wants to see it. If your office wants the line left blank, the officer will tell you.

The form goes in with your passport, copies of the photo page and the page with your entry stamp, the photo and ฿1,900 in cash. Some offices also ask for proof of where you're staying, and the hub page has the full checklist with what's official and what officers sometimes add.

Page 2 is clear about two things. You have to hand the application in yourself, unless you're a patient or a person with a disability who can't come in, and the fee isn't refunded whether the extension is granted or not. Filling in the form well doesn't decide the outcome, because the extension is at the officer's discretion.

The e-Extension system, open in eight provinces including Bangkok, Chiang Mai, Pattaya and Koh Samui, lists the TM.7 first among the documents for a tourism extension. You fill in the same paper form, sign it, scan or photograph both pages and upload it with your passport copies, entry stamp and photo, then pay ฿1,900 plus a ฿500 service fee.

You still visit the office once to collect the stamp, and I'd bring the signed original with you. The hub's section on e-Extension covers the provinces, the 45-day window and how long the decision takes.