A baby born in Thailand must be notified to the local civil registrar within 15 days of the birth, and the registrar issues the Thai birth certificate. The baby is Thai only if at least one parent is Thai; a child of two foreign parents on temporary stays gets their parents' nationality, a passport from their embassy and then a Thai visa of their own.
The hospital handles the medical side and gives you its own birth document. Everything after that is paperwork with three different offices: the Thai district registrar, your embassy and Thai immigration. This page walks through them in order, with the rules as published in October 2026. It is a general guide, not legal advice. For your own case, ask the district office and your embassy, and use a licensed Thai lawyer if anything is unusual.
After a birth in Thailand (October 2026)
- Notify the birth
- Within 15 days, to the registrar where the baby was born
- Outer limit
- 30 days, only if notifying in time was not possible
- Late notification
- Fine of up to 1,000 baht, an inquiry with witnesses
- Thai nationality
- If the father or mother is Thai (Nationality Act s.7)
- Two foreign parents on temporary stays
- Not Thai (s.7 bis)
- Passport
- From the parent's embassy, using the Thai birth certificate
- Baby's visa
- Ask Thai immigration; the e-Visa Non-O route is from abroad only
Step 1: notify the birth within 15 days
Thailand's Civil Registration Act puts the duty on the parents. According to the Bureau of Registration Administration (BORA), a birth outside a house, which includes a hospital birth, is notified by the father or mother to the registrar of the place of birth within 15 days. If that was not possible, it can be done later, but not more than 30 days after the birth.
BORA's guide lists the documents: a copy of the house registration, the ID of the person notifying, and the hospital's birth certificate. Foreign parents use their passports. The guide is written for the general case, and it does not describe what foreign parents with no Thai house registration should bring, so ask the hospital and the district office (the amphoe, or khet in Bangkok) before you go. The hospital's international or registration desk may know the local routine.
Miss the deadline and the registrar can fine you up to 1,000 baht, hold an inquiry with witnesses and send the case to the district chief for approval. It is easy to avoid: put the date in your phone the day the baby is born.
The hospital paper is not the birth certificate. The document you leave the hospital with records the birth. The Thai birth certificate (sutibat) comes from the registrar after you notify. Your embassy will ask for the registrar's certificate, so do not leave Thailand or apply for a passport with only the hospital paper.
Step 2: the Thai birth certificate and its translation
The certificate is issued in Thai and dated in the Buddhist Era, so a baby born in 2026 has a certificate dated 2569. Our page on Thai dates and the Buddhist Era explains the conversion if an official at home is puzzled.
Most embassies and home authorities need a translation, and some need the certificate legalized or authenticated as well. Norway's tax administration, for example, says a birth certificate from Thailand must carry an apostille or be legalized by the issuing country's foreign ministry before it can be used in the Norwegian population register. The UK accepts the local certificate with an approved translation if it is not in English. Thailand's Ministry of Foreign Affairs runs the legalization office that also handles marriage papers, as our guide to marrying a Thai citizen describes; ask your embassy exactly which translation and stamp it needs before you pay for anything.
Check every name and date on the certificate before you leave the counter. Correcting a Thai civil record later is far more work than asking for a fix on the day. The certificate is written in Thai script, and the spelling in your passport is what the embassy will match against.
Step 3: is the baby Thai? What the Nationality Act says
Section 7 of the Nationality Act B.E. 2508 gives Thai nationality by birth to a person born to a Thai father or a Thai mother, inside or outside Thailand. "Father" includes a biological father proved under the ministry's rules, even if the parents are not married. So a baby with one Thai parent is Thai from birth, and the birth is registered like any Thai birth.
Being born on Thai soil is not enough on its own. Section 7 bis says a child born in Thailand to foreign parents does not become Thai if, at the time of birth, the father or mother was in Thailand temporarily, under special temporary leniency or illegally. Visitors and people living in Thailand on a visa and extension, such as retirees, workers and students, generally stay temporarily in this sense. A baby of two such parents is not Thai, whatever is said online. If either parent holds Thai permanent residence, ask the district office and a lawyer, because the answer may differ.
Whether the baby can also hold your nationality is your own country's law. Ask your embassy, and if a Thai parent is involved, ask a Thai lawyer how the two nationalities interact.
Step 4: your embassy, citizenship and the first passport
Every country handles a birth abroad differently. These are the rules for some of the nationalities that read this site most, as published in October 2026:
| Country | Citizenship | What to do |
|---|---|---|
| United Kingdom | Depends on the parent's status; check gov.uk | Registering the birth with the UK is optional (£150, certificate £50, plus £6–42 return postage; at least 5 working days). You can apply for a UK passport without it. |
| United States | Check with the embassy | The Consular Report of Birth Abroad (CRBA) is handled by the US Embassy in Bangkok; we could not read its current procedure or fee |
| Norway | Norwegian if one parent is Norwegian | Passport through the Norwegian passport authority; a national ID number can be issued with the passport application at a foreign mission. Apostilled or legalized certificate needed. |
| Sweden | Can be automatic with one Swedish parent | The embassy in Bangkok arranges a coordination number (samordningsnummer), needed for the passport, only if a passport application follows within 6 months |
| Denmark | Automatic since 1 July 2014 if the father, mother or co-mother is Danish | Passport questions go through um.dk |
Book the passport appointment early. Embassy appointments can be booked up, and until the baby has a passport, the baby cannot travel and cannot get a Thai visa stamped. Have the Thai birth certificate, its translation, both parents' passports and, if you are married, your marriage certificate ready. Ask the embassy which photos it accepts for a newborn.
Step 5: the baby's permission to stay in Thailand
A foreign baby born in Thailand has no visa. Thai immigration law still applies to them, so the next step after the passport is permission to stay. On the official e-Visa portal, the matching category is the Non-Immigrant O "to stay with non-Thai family residing in Thailand", which asks for proof of the relationship (such as the birth certificate), the parent's passport, visa and stay permit, and financial evidence of at least 30,000 baht. But that portal route can only be used from outside Thailand.
For a baby born inside the country, the in-country procedure and any time limit were not published on a page we could read in October 2026. Take the baby's new passport, the birth certificate and your own visa documents to your local immigration office as soon as the passport arrives, and ask what they need. Do not wait until you plan to travel. Our guide to overstaying in Thailand explains why you never want an overstay on any passport in the family, and the re-entry permit page covers keeping a stay alive when you travel.
Copy everything twice. Immigration, the embassy, your employer, your insurer and later the school will all ask for the birth certificate, its translation and the baby's passport. Keep certified copies and scans in one folder from day one.
Choosing a hospital and paying for the birth
Many foreign parents give birth in a private hospital in Bangkok, Chiang Mai, Phuket or another large city. Our guide to hospitals in Thailand explains private and public care and how deposits and payment guarantees work. Delivery packages are advertised by many private hospitals, but we could not verify current prices on official pages, so ask several hospitals for a written quote that says what happens, and what it costs, if the birth needs a caesarean or the baby needs neonatal care.
Insurance is the bigger question. Ask whether your policy covers maternity at all, whether there is a waiting period before it does, and whether a travel policy covers childbirth abroad. Read our guide to health insurance for expats well before the pregnancy if you can, and check whether the newborn is covered from birth. If you are Rh-negative, our page on Rh-negative blood in Thailand is worth reading early. Medical questions about the pregnancy and the birth itself belong with your obstetrician.
If you are still deciding whether to travel during pregnancy, our guide to traveling to Thailand while pregnant covers airlines, Zika and insurance. Looking further ahead, our guide to international schools in Thailand covers schooling and the child's later visas.
Frequently asked questions
Does a baby born in Thailand become a Thai citizen?
Only if the father or mother is Thai. Under section 7 bis of the Nationality Act, a child born in Thailand to two foreign parents who are staying temporarily, for example on a tourist, work, retirement or study visa, does not get Thai nationality.
How long do I have to register a birth in Thailand?
15 days from the birth, at the registrar of the place of birth. If notifying in time was not possible, the outer limit is 30 days. After the deadline the registrar can fine you up to 1,000 baht and will hold an inquiry with witnesses.
Do I have to register my baby's birth with the British Embassy?
No. The UK government says registration is optional and costs £150, and that you can apply for a UK passport even if you do not register the birth. You still need the Thai birth certificate, translated if it is not in English.
What visa does a newborn foreign baby need in Thailand?
The baby needs permission to stay of their own. The e-Visa portal's Non-O category for joining non-Thai family can only be used from abroad, so for a baby born in Thailand ask your local immigration office what it requires as soon as the passport is issued.
Sources
- Bureau of Registration Administration – Civil registration guide: birth and late notification (Thai) (checked October 2026)
- Nationality Act B.E. 2508 as amended, unofficial English translation (via ecoi.net) (checked October 2026)
- UK government – Register a birth abroad (checked October 2026)
- Skatteetaten (Norway) – Children born abroad (checked October 2026)
- Migrationsverket (Sweden) – Am I a Swedish citizen? (checked October 2026)
- Danish Ministry of Immigration and Integration – Automatic Danish citizenship (checked October 2026)
- Thai e-Visa – Non-Immigrant O visa categories (checked October 2026)