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Thai children under 18 to need birth certificate to leave Thailand

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Thai nationals aged under 18 leaving Thailand via Suvarnabhumi Airport must now show a birth certificate to immigration officers, under a new measure announced on 3 August 2026.

The rule was issued by the departure immigration division at Suvarnabhumi Airport. Parents, guardians or other accompanying people are asked to ensure the required documents are ready before travel to avoid delays at immigration.

Previously, Thai children under 18 could travel overseas using only their passport. Immigration said the change is intended to protect children's best interests and prevent them being taken out of Thailand unlawfully or without the permission of a parent or legal guardian.

Documents accepted at immigration

Immigration officers will accept an original birth certificate, a copy of the birth certificate, or an electronic image of the document.

The airport notice also lists a consent letter from the father and/or mother issued by a government agency among the documents that may need to be shown to officials.

The announcement applies specifically to Thai nationals under the age of 18 who are departing the kingdom. It says the documents should be presented by the father, mother or another person travelling with the child.

What this means for foreign families

Parents should carry a birth certificate in an accepted format when flying out of Suvarnabhumi with a Thai child, even if the child also has another nationality or passport. Where one parent is not travelling, families should also ensure they have any government-issued parental consent documentation required by immigration.

Suvarnabhumi Airport Immigration said the requirement is designed to make the immigration process smoother when passengers have the documents available for inspection.

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Picture courtesy of Thansettakj

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5 August 2026


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  • Nemises
    Nemises

    Wonder how many tourists will only find out about this when they’re standing at the immigration counter...

  • fredwiggy
    fredwiggy

    Seeing you need the birth certificate to get a passport for the child, it shouldn't be necessary. Having it on your phone is okay.

  • Jim Waldron
    Jim Waldron

    Thailand has had recurring cases of minors being taken abroad without the consent of one parent. And while this may be well‑intentioned, it's sure to be poorly rolled out, and guaranteed to cause head

  • Popular Post

Wonder how many tourists will only find out about this when they’re standing at the immigration counter...

How about a 17 year old travelling unaccompanied?

  • Popular Post

Seeing you need the birth certificate to get a passport for the child, it shouldn't be necessary. Having it on your phone is okay.

  • Popular Post

Thailand has had recurring cases of minors being taken abroad without the consent of one parent. And while this may be well‑intentioned, it's sure to be poorly rolled out, and guaranteed to cause headaches until people adapt.

Foreign families with dual‑national kids will now have an extra hoop to jump through. And single‑parent travellers may also face inconsistent interpretation depending on the officer.

So, while it may provide clearer protection in custody‑dispute situations, and it's rationale may well be legitimate, the execution will likely be messy, uneven, and occasionally absurd.

Been taking my kid out every year for past 4 yrs starting at age 10. I had copy of birth cert, the official paper from Amphur office, copy of mother's ID. Never been asked for anything. Prior to the electronic departure deal we could depart together. But now with the new gates we depart separately.

How will this work?

That's actually a good thing. IMHO, with the way kids are trafficked now of days.

Get asked a lot why I changed my name a couple times, and one was to be the same as my village orphan. Actually got her MIA parents in the same room one time, to get her PP as soon as I could. I think she was 15, and tested it out shortly after by hopping over to Laos.

No issues at all since we had the same last names in our PP. Same with hotels and her govt ID. Farang checking into hotel, by self with Thai child should raise some eyebrows, if not having the same last name.

Now she adopted us, when an adult, and we all have my wife's last name.

Strange the rule isn't in place for up to 20 yrs old, as still a minor.

1 hour ago, fredwiggy said:

Seeing you need the birth certificate to get a passport for the child, it shouldn't be necessary. Having it on your phone is okay.

Have you left Thailand with your kid recently, like past 2 yrs? When Thais leave they scan their passport and that's it. No IO involved.

I tried to follow her through the Thai side and was told to go to foreigner side departing. Leaving my kid to stand around alone till I could make it through Immigration.

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1 hour ago, fredwiggy said:

Seeing you need the birth certificate to get a passport for the child, it shouldn't be necessary.

Yes, I don't get it. How can an extra piece of paper, much more falsifiable than a passport, can help "to protect children's best interests and prevent them being taken out of Thailand unlawfully or without the permission of a parent or legal guardian."?

19 minutes ago, EVENKEEL said:

Have you left Thailand with your kid recently, like past 2 yrs? When Thais leave they scan their passport and that's it. No IO involved.

I tried to follow her through the Thai side and was told to go to foreigner side departing. Leaving my kid to stand around alone till I could make it through Immigration.

I went last year with her and two years before that. They wanted to speak with her mom and then we went. It's all about the individual IO officer. A passport is both parents giving the child permission to travel, but it still depends on who you talk to. My daughter is old enough and knows what to do but I cover my bases so there's no delays. I also had a letter written in Thai by her mom and dated and signed but they still wanted to talk with her. Now it looks like it needs to be notarized.

Edited by fredwiggy

1 minute ago, Yumthai said:

Yes, I don't get it. How can an extra piece of paper, much more falsifiable than a passport, can help "to protect children's best interests and prevent them being taken out of Thailand unlawfully or without the permission of a parent or legal guardian."?

It's like many other "ideas" that happen here. The best ways are to copy a system that's proven to work, as they have adopted many western ways but some think they know better, which usually proves wrong. Wasting more time at the airport isn't a good thing. If everyone had all the documents necessary to travel in their hands before they saw the officers, things would go smoother.

2 hours ago, fredwiggy said:

Seeing you need the birth certificate to get a passport for the child, it shouldn't be necessary. Having it on your phone is okay.

birth certificate is not required for a thai passport

10 minutes ago, fredwiggy said:

I went last year with her and two years before that. They wanted to speak with her mom and then we went. It's all about the individual IO officer. A passport is both parents giving the child permission to travel, but it still depends on who you talk to. My daughter is old enough and knows what to do but I cover my bases so there's no delays. I also had a letter written in Thai by her mom and dated and signed but they still wanted to talk with her. Now it looks like it needs to be notarized.

So, you went with your daughter through the Thai side departing? Was her mom traveling with you?

Did your daughter go with you through the foreigner line?

The amphur office will have an official document for taking the kid out of Thailand.

15 minutes ago, EVENKEEL said:

So, you went with your daughter through the Thai side departing? Was her mom traveling with you?

Did your daughter go with you through the foreigner line?

The amphur office will have an official document for taking the kid out of Thailand.

We went through the foreign side, just her and I.

19 minutes ago, yankee99 said:

birth certificate is not required for a thai passport

I wouldn't trust anything that happens here, with all the changing of things, the individual IO's that aren't familiar with what's needed , so having everything is the smart idea. I have both passports and they still wanted the letter and to talk with her, while others weren't asked for anything besides a passport.. Not a good idea not going prepared a few hours before you want to leave the country.

Edited by fredwiggy

The only reason for showing a birth certificate is because

it shows the names of both parents ?

We had to get these documents together including a government authenticated form that our child could travel abroad with a guardian (school trip to China). I think we had to go to CW Immigration for that, even though he was traveling on his Thai passport.

Not sure how two foreign parents would do this if just one of them is traveling. Still go to CW Imm to get a form?

This process is not new nor unique to Thailand though. It's an international thing to prevent human trafficking of minors and parental abduction. But when I was travelling alone with one of our kids I never had any extra forms and was never questioned.

7 minutes ago, fredwiggy said:

We went through the foreign side, just her and I.

My kid goes through the Thai side, just scan passport and go with no IO . Been this way since 2 yrs now.

We'll see. I always carry a copy of Birth cert, mother's ID with number and old copy of Amphur letter.

1 minute ago, EVENKEEL said:

My kid goes through the Thai side, just scan passport and go with no IO . Been this way since 2 yrs now.

We'll see. I always carry a copy of Birth cert, mother's ID with number and old copy of Amphur letter.

Yes, that can work if the child knows what to do.Never tried that as she was 7 and 9 both times, so we just went through foreigner line, as she's half foreigner with both a US and Thai passport. I'm sure they need an updated letter with date and signed, so that's what I'll get a month before we go.

Edited by fredwiggy

Regretably, sign of the times. Article from the United Nations:

Human Trafficking and Cyber-Scams: Law enforcement agencies in parts of Southeast Asia, such as the Royal Thai Police, have issued warnings about a continuous rise in minor abductions tied to human trafficking. A growing number of minors are being lured online and abducted to work in regional cyber-scam compounds

1 hour ago, EVENKEEL said:

Been taking my kid out every year for past 4 yrs starting at age 10. I had copy of birth cert, the official paper from Amphur office, copy of mother's ID. Never been asked for anything. Prior to the electronic departure deal we could depart together. But now with the new gates we depart separately.

How will this work?

Any written permission from the wife required? A pal of mine said he needed that.

Whenever I've taken my (British) son overseas from Suvarnabhumi, I've had his Thai birth certificate and a letter from my wife saying she's given permission for him to travel. So, no real change for foreign parents travelling with a foreign child.

A consent letter from the non travelling parent(s) is already required. How does a birth certificate add security?

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7 minutes ago, stevenl said:

A consent letter from the non travelling parent(s) is already required. How does a birth certificate add security?

I can think of a couple of reasons. It confirms the name, DOB , birthplace as the same as the passport. Also it has the name of both parents - so including the one that isn't traveling but has written a permission letter.

12 minutes ago, ronnie50 said:

I can think of a couple of reasons. It confirms the name, DOB , birthplace as the same as the passport. Also it has the name of both parents - so including the one that isn't traveling but has written a permission letter.

Is it too difficult to imagine that people willing to take minor children without consent are fully prepared with all the paperwork, genuine or not, as if simple papers could dispel any suspicion or prove anything?

3 minutes ago, Yumthai said:

Is it too difficult to imagine that people willing to take minor children without consent are fully prepared with all the paperwork, genuine or not, as if simple papers could dispel any suspicion or prove anything?

Not all countries require this, but many do. So the advice is to do your research if traveling with a child without both parents. As I said above this is not new and not unique to Thailand.

https://travel.state.gov/en/international-travel/planning/personal-needs/minors.html

1 hour ago, jacko45k said:

Any written permission from the wife required? A pal of mine said he needed that.

That's what the official letter from Amphur office is all about. It's the mother giving her permission. And I have copy of mom's thai ID card with phone number.

I've made the trip 4 times, first and second time she was 10 and 11 and we went through Thai side as it was shorter. They didn't ask for anything. Starting 2 yrs ago they started the scan passport and go on Thai side and I went the foreigner side. Never asked for anything even though I had all the info.

4 hours ago, yankee99 said:

birth certificate is not required for a thai passport

Minors (Under Age 20)

  • Original Thai birth certificate.

  • Minor's Thai National ID card (if 7 years old or older).

  • Parents' or legal guardian's original ID cards and passports.

  • Parents' marriage certificate or single parent custody documentation (Por. Kor. 14 / divorce papers) if applicable.

  • Signed parental consent form (parents must appear in person or provide a certified consent letter). [1, 2, 3, 4]

1 hour ago, ronnie50 said:

Not all countries require this, but many do. So the advice is to do your research if traveling with a child without both parents. As I said above this is not new and not unique to Thailand.

https://travel.state.gov/en/international-travel/planning/personal-needs/minors.html

Right, if you're stopping in multiple countries with your child, you'll need all that BS for each border. I'd like to know how many Thai children are abducted by their foreign parent each year. The only cases I know of are two foreign parents with the wife abducting their kid.

I’ve been traveling to my country twice a year with my daughter since she was nine months old; the last time was in April and May of 2026.

Every time the IO stop me and ask for couple of documents as her mother’s letter of consent, the birth certificate and the three passports—two of hers and one of mine—and they always make a video call to her mother, who has to hold up her ID while they record her saying she consents to letting him leave the country.

Once at the check-in counter, she even had to write a letter to the airline, stating that she consented to their departure from the country

But as happy as I am that these procedures work in case a parent runs off with their child, I think they can see that over the past five years I’ve traveled back and forth twice a year with my daughter and have always brought her back, so I don’t think my situation is particularly at risk. Still, I always have to spend at least 30 minutes at passport control—luckily, there are rarely many people on the Thai side.

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