Thailand's Immigration Bureau launched THIM, a mobile app that files your mandatory arrival card in about three minutes by scanning your passport, at full launch in August 2026, with an expanded upgrade landing October 1, 2026. For anyone flying into Chiang Mai for golf, that timing matters: the upgrade arrives just as peak season opens.
Every foreign golfer entering Thailand must complete a Thailand Digital Arrival Card (TDAC) within 72 hours before arrival. THIM does not remove that requirement. It just makes filing far faster, and knowing how it works before you reach the gate saves a scramble at immigration.
What is the THIM app and what does it do?
THIM stands for the Thailand Immigration Management System. It went to full launch in August 2026 after an iOS and Android trial, as The Nation reported on June 7, 2026. Instead of typing every field into the TDAC web form, you scan your passport and the app records your details, cutting the process to roughly three minutes. An expanded feature set is set for October 1, 2026, letting returning travellers save a full profile once and update only details like flight number on later visits.
The immigration system handles about 30 million foreign tourists a year, so the goal is to move that volume off a slow web form. The Bureau plans to grow THIM into a super app covering appointment booking, visa-extension services, online document requests, and a 24/7 tourist-police hotline for foreign visitors who need help.
Is the app compulsory yet?
No. As of early September 2026, THIM is not mandatory. You can still file your arrival card directly at tdac.immigration.go.th, as a Siam Legal traveller guide confirms. The Bureau is pushing THIM as the primary channel, though, and the October 1 feature rollout signals where this is heading.
For trip planning, treat the app as optional now and standard soon. If your golf holiday falls in the cool-season peak from November onward, downloading THIM before you fly is the low-effort choice.
Why does the Oct 1 timing matter for a golf trip?
October 1 is when the upgraded feature set goes live, and it coincides with the start of Chiang Mai's prime golf window. Cool, dry mornings from October through February give the best playing conditions on courses like North Hill Golf Club and Chiangmai Highlands Golf & Spa Resort.
More arrivals in that window means busier immigration halls at Chiang Mai (CNX). Filing your TDAC in advance through THIM, or the web form, keeps you moving through the airport and out to your first tee time faster.
How does this help groups on a package trip?
Package groups gain the most from THIM's stored-details feature. Once a player's passport and travel details are loaded, return visits and repeat trips are far quicker, since you scan and confirm rather than re-enter everything. For a foursome that comes back each season, that is real time saved at every arrival.
Each traveller still files their own card under their own passport, so everyone in the group needs the app or web form on their own phone. Our longer itineraries like the Lanna Signature package (7 nights, 5 rounds) and the Highlands Classic (5 nights, 4 rounds) draw plenty of repeat groups, and pre-loaded arrival details make each return smoother.
Does this change the cost of my trip?
No. THIM and the TDAC are free. There is no filing fee, and the app does not add cost to your golf holiday. The only thing it changes is time at the border. Watch for scam sites that charge for arrival-card filing; the official channels, the TDAC website and the THIM app, never ask for payment.
See our Chiang Mai golf packages and lock in your peak-season dates.Frequently asked questions
Do I still need to file a Thailand Digital Arrival Card if I use the THIM app?
Yes. THIM is only a faster way to file the same mandatory Thailand Digital Arrival Card. Every foreign golfer flying into Chiang Mai must complete a TDAC within 72 hours before arrival, whether through the app or the web form at tdac.immigration.go.th. The card itself is not optional. THIM just cuts the filing time to about three minutes by scanning your passport instead of typing every field.
Is the THIM app compulsory for my Chiang Mai golf trip?
Not as of early September 2026. Thailand's Immigration Bureau launched THIM as the primary channel and is pushing it hard, but travellers can still file directly at the TDAC website. An expanded feature rollout is slated for October 1, 2026, right as peak golf season opens, so downloading the app before you fly is the safer bet for a smooth arrival at CNX.
Can our whole golf group pre-load arrival details in one go?
Each traveller files their own arrival card under their own passport, so every player in the group needs the app or the web form on their own phone. The upside for package groups is reuse: once your details are stored in THIM, return visits and repeat golf trips are far quicker, since you scan and confirm rather than re-enter everything from scratch each time.
Frequently asked questions
Do I still need to file a Thailand Digital Arrival Card if I use the THIM app?
Yes. THIM is only a faster way to file the same mandatory Thailand Digital Arrival Card. Every foreign golfer flying into Chiang Mai must complete a TDAC within 72 hours before arrival, whether through the app or the web form at tdac.immigration.go.th. The card itself is not optional. THIM just cuts the filing time to about three minutes by scanning your passport instead of typing every field.
Is the THIM app compulsory for my Chiang Mai golf trip?
Not as of early September 2026. Thailand's Immigration Bureau launched THIM as the primary channel and is pushing it hard, but travellers can still file directly at the TDAC website. An expanded feature rollout is slated for October 1, 2026, right as peak golf season opens, so downloading the app before you fly is the safer bet for a smooth arrival at CNX.
Can our whole golf group pre-load arrival details in one go?
Each traveller files their own arrival card under their own passport, so every player in the group needs the app or the web form on their own phone. The upside for package groups is reuse: once your details are stored in THIM, return visits and repeat golf trips are far quicker, since you scan and confirm rather than re-enter everything from scratch each time.
