Re-entry permit under Section 39 of the Thai Immigration Act

A foreign national holding a permission to stay who leaves Thailand without a re-entry permit loses that permission the moment they depart, and must start the visa process again from scratch. The permit preserves the existing permission for the trip. Holders of a still-valid multiple-entry visa should check their own conditions before every departure, because the two mechanisms are not the same thing.

A single permit suits someone with one planned departure before their permission to stay expires. A multiple permit suits frequent travellers, since it covers every trip up to that same expiry date. Both are always tied to the current permission to stay and can never outlive it, so a new extension of stay requires a new re-entry permit as well.

The remaining permission to stay ends the moment the person departs. On return they receive whatever new status the visa class attracts at the border, which is usually far shorter, and the extension process has to start again from the beginning. Where a work permit is tied to the previous permission to stay, take advice before travelling rather than after.

A single permit is enough for one departure before the current permission to stay expires. A multiple permit is better value for frequent or uncertain travel because it covers every trip until that same expiry date. Remember that the permit does not extend permission to stay; it only preserves it, so the expiry stamp in the passport remains the controlling date.

The existing permission to stay ends on departure, so on return you receive whatever status the border grants. A work permit tied to that permission may become unusable, and the day count for your next extension restarts from zero. This is very difficult to reverse afterwards, which is why the permit is worth obtaining before every trip, however short.

A single permit is enough for one planned trip before your next extension date. If you travel frequently or your plans are unsettled, the multiple version covers every journey until the current permission to stay expires. Neither version extends your permitted stay; both simply preserve the existing permission, expiring on the same final date as that permission.

Count the trips left before your permission to stay expires. One departure before the next extension makes a single permit sufficient; two or more make a multiple permit the safer choice and removes the risk of forgetting a later trip. Neither type extends your stay: both simply preserve the permission you already hold until its existing end date.

No. A re-entry permit is tied to the permission to stay it was issued against, so a new extension requires a new permit. The usual practice is to file the extension and the re-entry permit on the same day at the same office, which avoids a gap between the two documents and a wasted second visit later in the month.

The permission to stay ends at departure and cannot be reinstated retroactively. The route back is a fresh visa of the appropriate category from a Thai embassy or consulate abroad, then restarting the extension process after arrival. Work-permit holders should tell their employer immediately, because labour-side documents are usually tied to the status that has now lapsed.

The permission to stay lapses at the moment of departure, even if the stamp in your passport still shows remaining days. On return you are admitted afresh under whichever visa category applies at that time, usually far shorter, and the extension process must be restarted from the beginning. A work permit tied to the lapsed permission is affected as well, so obtain it before every departure.

Count the trips you expect before your current permission to stay ends. More than one departure in the same cycle makes the multiple version the better value and removes the risk of forgetting. Neither version extends your stay: both expire on the last day of the permission you already hold, so a fresh extension and a fresh re-entry permit are needed each cycle.

Immigration counters in the departure terminal generally issue them, but allow generous time because the queue depends on the hour and the flight schedule. Bring your passport, photographs in the required size and the completed application form. Filing in advance at your local immigration office remains the more controllable option, particularly when you have a connecting flight to catch.

Leaving the country without one ends the permission to stay at the moment of departure, and re-entry then depends on whatever visa category is available at that time. Before boarding, the fix is the airport counter before the immigration checkpoint. Once you have departed it generally cannot be reversed, so the sensible step is planning the new application to limit the damage.

Count the trips planned before the current permission to stay expires. More than one trip in that window usually favours the multiple permit and removes the risk of forgetting a second application. Both expire with the underlying permission to stay; neither extends it. The frequent misunderstanding is treating a re-entry permit as an extension of stay, which it is not.

Single suits a person with one planned departure before the current permission to stay expires. Multiple suits regular business travel within the same permission period. Either way the permit can never outlast the end date of your permission to stay. We recommend based on the actual travel plan rather than defaulting to the more expensive option.

Your permission to stay lapses on departure even though the stamp still shows remaining days. You would need a fresh visa from abroad, usually with the full supporting pack again, and if a work permit is tied to that status your employment position is affected too. Check before every departure — or let us verify it before you buy the ticket.

The permission to stay ends the moment you depart, even if the visa page still shows a later date. On return you receive whatever status the entry stamp gives you at that time, and the extension process starts again from scratch, including the company documents and the linked work permit. The remedy is to obtain the permit at the immigration counter before boarding. We flag this for corporate clients on every unplanned trip.

If you expect more than two departures within the same permitted period of stay, the multiple permit saves time and removes the risk of forgetting to apply before each trip. For one clearly scheduled departure, the single permit is enough. Either way the permit is tied to your existing end-of-stay date and does not extend it. We look at your real travel calendar before recommending one.

A single permit is enough if you have exactly one trip planned before your permission to stay ends. If you travel for business often, or the calendar is not settled, a multiple permit removes the risk of scrambling before a flight. The deciding factor is the certainty of your plan, not the number of tickets already booked. We review the year ahead before advising.

Departing without one ends the permission to stay you held, and your return is treated as a fresh entry under whatever visa status applies at that moment. What can be done is to plan the next application quickly with complete supporting documents. We assess the remaining options and prepare a robust pack for the new round.

If you have one firm trip planned this year, single is enough. If your work involves short-notice travel or family abroad, multiple is materially better value against the risk of losing your permission to stay by departing without one. The real decision variable is how uncertain your travel plans are, not the number of flights already booked.

It is possible, but it needs far more time than people allow. You must reach the counter before check-in or before immigration control depending on the airport, with a photo and passport copies ready. If the queue is long or a document is missing, the choice becomes missing the flight or losing your stay permission. Where the travel date is known, we file in advance at the immigration office.

It preserves an existing permission to stay while you are outside Thailand. Without it, leaving cancels the extension you already hold, and you return on a fresh entry with a new and usually shorter permission. The permit does not extend anything or create new rights; it simply stops the clock from being reset by the trip.

Count the trips you realistically expect before your current permission expires. One planned trip favours a single permit; two or more, or an unpredictable travel pattern, favours multiple. The overlooked factor is the cost of being wrong: a missed permit means rebuilding the extension from scratch, which costs far more time than the difference between the two options.

Airport counters exist, but relying on one on the day of travel leaves no margin if queues are long, a document is missing or the counter's hours do not match your flight. We treat airport application as a fallback, not a plan. Applying in advance at an immigration office turns a stressful morning into a routine one.

The previous permission to stay ends, and you re-enter under whatever entry you then qualify for. Depending on the visa category, rebuilding the earlier position can require a new application from outside Thailand, fresh supporting documents and, for work cases, coordination with the employer's filings. It is recoverable, but it is the single most expensive avoidable error in this area.