To get married in Thailand as a foreigner, you register your union at a Thai district office after collecting a short stack of documents from your embassy and the Thai Ministry of Foreign Affairs. A temple ceremony, a beach vow exchange, or a religious blessing carries no legal weight on its own. Registration is the marriage. Plan on one to two weeks from your first embassy appointment to a signed certificate, and expect the paperwork to be harder than the ceremony.
Who Can Legally Marry
Both people must be at least 17. Anyone under 20 needs parental consent, because 20 is the age of legal majority in Thailand. A court can authorize marriage below 17 in exceptional cases, but that is rare. The law also prohibits marriage between direct blood relatives or siblings (including half-siblings), between an adoptive parent and their adopted child, and between anyone already married to someone else.1Siam Legal. Civil and Commercial Code Marriage Section 1448-1460
A woman whose previous marriage ended by divorce or death must wait 310 days before registering a new marriage. The purpose is to avoid disputes over the paternity of a child conceived near the end of the prior marriage. She can skip the wait if she has already given birth during that window, provides a doctor’s certificate confirming she is not pregnant, remarries her former spouse, or obtains a court order.2Royal Thai Consulate-General, Los Angeles. Apply for a Marriage Certificate
Two foreign nationals can marry each other in Thailand. You do not need a Thai spouse. Each person follows the same documentation process with their own embassy.3U.S. Embassy & Consulate in Thailand. Getting Married in Thailand
The Process at a Glance
Three stops, in order:
- Your embassy in Thailand, for an affirmation that you are free to marry.
- The Thai Ministry of Foreign Affairs, to legalize that document along with a certified Thai translation.
- Any Thai district office, where you and your partner appear together to register the marriage.
Under the Civil and Commercial Code, the marriage exists only from the moment it is registered. There is no grace period, no common-law alternative, and no substitute ceremony that carries legal force.4SamuiForSale. The Thailand Civil and Commercial Code
Step 1: Get an Affirmation from Your Embassy
Every foreign national needs a document from their home country’s embassy or consulate in Thailand confirming they are legally free to marry. Names for it vary. The U.S. Embassy calls it a “marriage/divorce affidavit.” The British Embassy issues a “marital status affirmation.” The substance is the same.
The U.S. version is a self-sworn statement. You personally declare your status; the embassy notarizes your signature and does not certify the underlying facts. Americans currently pay $50 for the affidavit, plus $50 for a certified passport copy if the district office requests one. Appointments must be booked in advance, and no walk-ins are accepted.3U.S. Embassy & Consulate in Thailand. Getting Married in Thailand
British nationals apply online. You will need your UK passport, proof of permanent address, your partner’s passport or national ID, the names and addresses of two referees living outside Thailand, and proof that any prior marriage has legally ended. Referees can be friends or family and do not have to be the same people who witness your ceremony.5GOV.UK. Confirm You’re Free to Get Married in Thailand
Whatever your nationality, bring your original passport to the appointment. It must be valid for at least six months from your date of entry into Thailand.6U.S. Department of State. Thailand International Travel Information If you were previously married, carry the divorce decree or death certificate. Some district offices ask for this even when the embassy did not.
Step 2: Translate and Legalize the Affirmation
The affirmation needs a certified Thai translation. Use a professional service. Small inconsistencies in how names or dates are rendered are a common reason district offices reject paperwork.5GOV.UK. Confirm You’re Free to Get Married in Thailand
The original document and its Thai translation then go to the Department of Consular Affairs at the Ministry of Foreign Affairs on Chaeng Watthana Road in Bangkok. The MFA verifies the embassy’s seal and the translator’s credentials, then stamps the documents so Thai government offices will accept them.3U.S. Embassy & Consulate in Thailand. Getting Married in Thailand
Standard processing takes about two business days at 200 baht per stamp, or 400 baht for a document together with its translation. Express service costs roughly double and can be finished the same day if you arrive before the morning cutoff. The fees are small; the real budget item is time. Hold on to every original. Photocopies of legalized documents will not be accepted at the district office.5GOV.UK. Confirm You’re Free to Get Married in Thailand
Step 3: Register at a District Office
With the legalized paperwork in hand, register at any district office in Thailand, called an Amphur in the provinces or Khet in Bangkok. You are not tied to a specific location.
Both of you must appear before the registrar and publicly declare your intention to marry. The registrar records the union, and both of you sign the marriage register. Two witnesses sign to confirm the union was voluntary. If neither of you speaks Thai, bring an interpreter. The U.S. Embassy recommends this because the registrar has to be satisfied that both parties understand what they are agreeing to.3U.S. Embassy & Consulate in Thailand. Getting Married in Thailand
The office then issues two documents. The Kor Ror 2 is the registration record kept in the civil system. The Kor Ror 3 is your marriage certificate, the document you will use for everything downstream: visa applications, updating records back home, changing names on financial accounts. Registration fees are typically under 100 baht.
Same-Sex Couples
Thailand’s Marriage Equality Act took effect on January 23, 2025, making Thailand the first country in Southeast Asia to legalize same-sex marriage. The amendments to the Civil and Commercial Code replaced gender-specific terms like “husband” and “wife” with “individual” and “spouse.” Same-sex couples have the same legal rights as opposite-sex couples, including inheritance, medical decision-making, and family-law protections.7United Nations in Thailand. One Year of Marriage Equality
Foreign same-sex couples register at any district office on the same terms described above, provided both parties can show they are not already married to someone else.
Prenuptial Agreements: Sign Them the Same Day
Thai law will not honor a prenup signed the week before the wedding and filed away for safekeeping. The agreement must be in writing, signed by both spouses and at least two witnesses, and registered in the marriage register at the same time as the marriage itself. Miss that window and the agreement is void, with no way to fix it after the fact.8Siam Legal. Civil and Commercial Code Marriage Section 1465-1493
This catches couples off guard. In many Western jurisdictions, a prenup is a standalone contract signed well before the ceremony. In Thailand it is part of the registration event. If you want one, have it drafted well in advance and bring it to the district office with the rest of your documents. The registrar notes its existence on the marriage certificate.
What Marriage Does to Property
Registering triggers automatic property-sharing rules. Under the Civil and Commercial Code, property either spouse acquires during the marriage is presumed to be marital property, known in Thai as sin somros. That includes income, real estate, investments, and returns generated by either person’s separate property. Where an asset’s status is unclear, the law presumes it is shared.
Land ownership is the trap for foreign spouses. Foreigners generally cannot own land in Thailand. When a Thai spouse buys land during the marriage, the Land Office requires both spouses to sign a joint declaration stating that the purchase money came from the Thai spouse’s personal funds and that the land is that spouse’s personal property, not marital property. Without that declaration, the Land Office will not register the purchase.
Thai courts have treated this declaration as an administrative formality. In a contested divorce, the court looks at where the money actually came from, not what the letter says. If the funds were earned during the marriage, the land can still be treated as marital property subject to division despite the declaration.
Staying in Thailand After the Wedding
Marrying a Thai citizen does not, by itself, give you the right to stay. If you entered on a tourist visa or visa exemption, your permitted stay does not change. To live with your Thai spouse, apply for a Non-Immigrant O visa, which initially allows a 90-day stay.
Applying from abroad, you generally need a passport valid for at least six months, a copy of your Thai marriage certificate, your spouse’s Thai ID, and evidence of financial resources. The Thai Embassy in Washington, D.C., for example, requires bank statements showing at least $15,000 in ending balance for each of the prior three months, or proof of monthly income of at least $1,500.9Royal Thai Embassy, Washington D.C. Non-Immigrant O Visiting Thai Family Residing in Thailand
Once in Thailand on the Non-O, you can apply at the Immigration Bureau for a one-year extension of stay. The financial bar is higher: either 400,000 baht deposited in a Thai bank account from an overseas source for at least two months before applying, or verified monthly income of at least 40,000 baht. Those figures apply at every renewal, so you need to keep your finances at or above the threshold for as long as you want to hold the extension.
Getting the Marriage Recognized at Home
A Thai marriage certificate is a valid legal document, but most home countries want extra steps before they update their own records. The process runs in reverse: have the Thai certificate translated from Thai into your language by a certified translator, have that translation legalized by the MFA, then present everything to your home country’s embassy in Bangkok or your national records office.
U.S. citizens should report the marriage to update Social Security records. The Social Security Administration accepts a copy of the public marriage record, a certified statement about the marriage, or the original marriage certificate as evidence of a valid ceremonial marriage. If those are unavailable, a signed statement from the official who performed the registration, or other convincing evidence, can substitute.10Social Security Administration. Evidence of a Valid Ceremonial Marriage
For federal tax purposes, if your Thai spouse is not a U.S. citizen or permanent resident, you can elect to treat them as a U.S. resident and file jointly. Both spouses attach a signed statement declaring that one was a U.S. citizen or resident on the last day of the tax year, the other was not, and both choose to be treated as U.S. residents. Each spouse’s taxpayer identification number goes on the return; if your spouse has no Social Security number, apply for an Individual Taxpayer Identification Number using IRS Form W-7. Once made, the election obligates both spouses to report worldwide income for that year and every year afterward until the election is suspended or ended, including your spouse’s Thai-source income.11Internal Revenue Service. Nonresident Spouse
British, Australian, Canadian, and EU citizens follow broadly similar steps: legalize the Thai certificate, present it to the relevant consular or civil registry authority, and confirm the marriage appears in home-country databases. Requirements vary by country, so check with your embassy in Bangkok before you leave Thailand. Completing this step is what lets your spouse later access survivor protections, pension rights, and immigration sponsorship in your home country.