THIM: How to Use Thailand’s Immigration Bureau App

THIM is a mobile service operated by Thailand’s Immigration Bureau under the Royal Thai Police. Official material uses both Thai Immigration Application and Thailand Immigration Management, but a traveller does not need to untangle the naming: the practical purpose is to connect a traveller profile, a specific trip and immigration services related to arrival.

The distinction that matters is between THIM and TDAC. The Thailand Digital Arrival Card is the arrival-information requirement for non-Thai nationals entering Thailand, subject to the exceptions in the Immigration Bureau’s current rules. THIM is an official way to work with that arrival process; it is not a new visa, and installing the app is not a separate entry condition. The Immigration Bureau continues to operate tdac.immigration.go.th as an official web route for TDAC submissions.

The app becomes more useful when a traveller returns to Thailand. Saved profiles can reduce repeated data entry, while passport details, accommodation, travel information and purpose of entry can be tied to a trip. That is also why THIM asks for information that may feel unusually sensitive for an ordinary travel app: the data is being used for an immigration submission, not simply for itinerary planning.

THIM should still be treated as a channel, not as the legal rulebook for every immigration procedure. Permission to enter, length of stay, extensions, reporting obligations and other services remain governed by their own requirements. As of 26 September 2026, the useful mental model is straightforward: TDAC is the arrival requirement where it applies; THIM is an official mobile interface that can make part of that process easier.

THIM handles passport and travel information, so downloading the wrong app is more consequential than choosing the wrong city guide. The icon and name are not enough to establish authenticity. Publisher details and the Immigration Bureau’s own domains are much stronger signals.

On Google Play, the official listing is THIM - Thai Immigration Bureau, published by RoyalThaiPolice, with the Android package th.go.immigration.thim. On Apple’s App Store, the same app is listed with Royal Thai Police as the developer. The official THIM web domain is thim.immigration.go.th, while the standalone TDAC service is at tdac.immigration.go.th. Both sit under the Immigration Bureau’s government domain.

That makes sideloading unnecessary and risky. An APK shared in a chat, forum or advertising page may use the same branding while bypassing the store information that helps a traveller verify the publisher. THIM has also been receiving frequent updates in 2026, so the normal update path should remain the official app store; unofficial download mirrors add needless provenance risk.

Payment is another useful authenticity check. The official TDAC process does not carry a government submission fee, and the official THIM app is free to download. A private travel or visa service can charge for legitimate assistance, but that is a service fee charged by the intermediary; it should not be presented as a mandatory Thai government TDAC fee.

When a link feels questionable, starting again from an Immigration Bureau domain is usually safer than trying to judge a lookalike page by design alone. For a service that deals with identity documents, provenance matters more than convenience.

THIM has been moving from a single-trip tool toward a reusable traveller account. App Store release notes now describe account creation, saved traveller profiles, verified passports and additional profiles for accompanying travellers. That makes the setup more valuable to someone who enters Thailand repeatedly than to a one-off visitor who only needs to complete a single arrival card.

Profile data should match the passport exactly. Names, passport number, nationality and dates are not fields where a convenient nickname or familiar spelling helps. Passport capture can reduce typing, but automated extraction should still be checked against the document before the details are reused in an arrival submission.

The app’s August 2026 release notes added identity verification, described as KYC, for travellers on an arrival card, along with profile editing and the ability to link travellers to verified profiles. Those are documented release features, distinct from the launch-day roadmap. The screen flow, however, can change across iOS, Android, language settings and app versions, which is why a durable setup guide should focus on the purpose of each stage instead of the location of individual buttons.

A failed passport scan is an app problem, not a reason to hand your identity document to a stranger. Updating the official app, checking camera permissions and connectivity, reviewing the document image and using any official manual-entry or fallback route offered in the current version are sensible responses. Sending a passport photo to someone in a messaging app who promises to “activate THIM” only creates a separate identity-security risk.

Keep the account itself under your control as well. Use contact details you can access during the trip, and do not share passwords or one-time verification codes. THIM is changing quickly; understanding the goals of the setup — verify the traveller, preserve accurate data and connect it to the right trip — will age better than a screenshot-by-screenshot tutorial.

TDAC remains its own requirement even when THIM is used to complete the arrival workflow. The Immigration Bureau’s current manual says non-Thai nationals should submit the digital arrival card before entry, normally within the three-day window that includes the arrival date. There are specific exceptions, including transit without passing immigration and crew, so an unusual itinerary should be checked against the live TDAC guidance; a simplified rule in a travel article is not enough.

THIM brings the same core arrival data into a mobile account: passport information, itinerary, accommodation in Thailand, purpose of entry and the information required for the arrival card. The official store descriptions list Digital Arrival Card, group applications, trip management and smart notifications as headline functions. For repeat visitors, the advantage is less about a new immigration rule and more about keeping profiles and trips together.

Group travel is one of the clearest use cases. TAT’s June launch explainer said THIM could register up to 10 travellers in one group, and the Immigration Bureau’s current TDAC manual also caps a group submission at 10 people. That is a useful planning number, although the live app should still be treated as the final interface because limits and screens can change between releases.

Recent updates have made the mobile route more useful. August release notes added identity verification and verified-profile linking. September updates then added offline access to the arrival-card QR code, followed by hotel search that can automatically populate the accommodation address. These are documented release features, not items borrowed from the original product roadmap.

Offline QR access solves a very ordinary travel problem: connectivity at an airport is not always dependable. Even so, a single app screen should not be the only place where a traveller can find the confirmation. The official TDAC service allows the card to be downloaded, and the document is also sent to the email address used for submission.

Submitting a second TDAC simply to feel safer is usually unnecessary. The official system supports updates before entry, and where multiple submissions exist, the latest valid information is used. If the current submission is correct, confirming the arrival date and keeping the QR available is more useful than creating duplicates because an app screen temporarily fails to load.

THIM invites an understandable assumption: if the Immigration Bureau has a government app, extensions, reports, appointments and every other foreign-national service must now sit inside it. The official material supports a narrower conclusion.

As of 26 September 2026, the live product clearly covers arrival-card functions, group applications, trip management, notifications and reusable profiles. Recent release notes also document identity verification, profile editing, verified-profile linking, offline arrival-card QR access and hotel search for accommodation autofill. Those can be described as current features because they appear in the official store listings and version history.

A second category consists of services announced as future development. TAT’s launch explainer, citing the Immigration Bureau rollout, described plans for digital document submission, appointment arrangements with officers and online consideration of selected requests where physical attendance is not required. The wording matters: these were development directions, not a guarantee that every service was live at launch or is live now.

That is why e-Extension, 90-day reporting, TM30, re-entry permits or a particular extension should not be assumed to have moved into THIM. Each procedure has its own Immigration Bureau rules, documents, deadlines and channel. Even if a new button appears in the app, the official instruction for that service remains the source for what the action legally accomplishes.

The app can change much faster than immigration rules are explained in third-party guides. Any step that affects lawful stay or immigration status should therefore be checked against the current official procedure for that service and the traveller’s actual situation, not inferred from the presence or absence of a THIM menu item.

A THIM failure feels more serious than an ordinary app glitch because it often happens close to a flight. The useful distinction is between the mobile interface and the underlying requirement. If THIM is unavailable, the official TDAC channel does not disappear with it.

For a routine technical problem, start with the basics that do not create new immigration records: use the current official app version, confirm connectivity and give the camera access needed for passport capture. A mismatch in a name, passport number or travel date can also make a trip appear missing. Rechecking the source data and restarting the app is safer than immediately creating another submission.

When the time-sensitive issue is the arrival card itself, tdac.immigration.go.th remains the official web fallback. It can be used to submit TDAC, download the confirmation and update information where the system allows an update. The Immigration Bureau also explains how multiple submissions are handled, so a duplicate should be created to correct a real problem, not simply because the app was slow for a moment.

Other immigration procedures need their own fallback route. An extension, reporting obligation or re-entry permission should not depend on whether THIM happens to show a particular menu. If the matter affects lawful stay, use the Immigration Bureau’s current instruction for that specific service or confirm the procedure with the relevant immigration office.

User reviews sometimes discuss NFC or particular scanning failures, but those reports are not immigration rules. The official sources used for this guide do not establish a universal requirement that every traveller must have a phone with working NFC in order to complete TDAC. Avoid turning a device-specific troubleshooting story into a legal condition.

THIM is most useful when it remains a convenient tool and never becomes the trip’s single point of failure. Before travel, the outcome that matters is a correct arrival submission and accessible confirmation through an official channel. If the app gets in the way of that outcome, the official web service is the better route.