🇺🇸Marry a United States national in Thailand

The US Embassy Bangkok does not issue a single-status certificate. Instead, the American citizen swears an Affidavit of Eligibility to Marry before a US consular officer at the American Citizen Services (ACS) section, 95 Wireless Road, Pathum Wan. The current consular service fee is USD 50, payable in Thai baht cash on the day at the prevailing rate. The affidavit is a one-page sworn statement on US Embassy letterhead — it is signed and notarised by the consular officer in front of you and can be collected within 60–90 minutes of the appointment.

Appointments must be booked online through the US Embassy Bangkok ACS portal. Slots typically open 3–6 weeks ahead and fill within hours during peak season (November–February, June–August). NYC monitors the booking calendar daily and secures the earliest available slot for clients, then accompanies the American spouse on the day to the ACS window. Bring: passport, the form filled in advance (we provide a pre-filled template), divorce decree if previously married, and the consular fee.

After the appointment, the affidavit must be translated into Thai by an MFA-registered translator and legalised at the Department of Consular Affairs, Chaeng Wattana — the amphur will not accept the English original alone. NYC handles translation (1 business day) and MFA legalisation (1–3 business days, or same-day for an extra THB 800).

Once the Kor.Ror.2 and Kor.Ror.3 marriage certificates are issued by the amphur, NYC translates them into English and obtains an MFA Apostille (Thailand joined the Hague Apostille Convention effective 14 December 2024 — the Apostille is now the only document the USCIS and US Embassy will accept; the older consular legalisation route is no longer needed).

The US citizen spouse, who must be domiciled in the United States, then files Form I-130 with USCIS together with: the apostilled Thai marriage certificate, both spouses' birth certificates (the Thai spouse's translated and apostilled), proof of bona-fide marriage (joint bank statements, joint lease, photos with timestamps spanning the relationship, communication logs), and the USD 675 filing fee. Current USCIS processing time for an I-130 filed for a spouse is 11–14 months at the Texas Service Center.

When approved, the case is transferred to the National Visa Center (NVC) in Portsmouth, New Hampshire. The Thai spouse then completes the DS-260 immigrant visa application, submits the I-864 Affidavit of Support, and pays USD 445 in NVC fees. NVC documentary review takes 2–4 months, after which the case is scheduled for an interview at the Immigrant Visa Unit, US Embassy Bangkok. The Thai spouse attends a panel-physician medical exam (Bangkok Hospital, Bumrungrad, or Bangkok Nursing Home are the only three Embassy-approved providers) before the interview.

The visa is typically issued within 5–10 business days of the interview and the Thai spouse must enter the United States within six months. On arrival the CR-1 holder is admitted as a Lawful Permanent Resident; the physical green card is mailed to the US address within 90 days.

The K-3 non-immigrant spouse visa was designed to reunite couples while the I-130 was pending, but in practice USCIS now closes most K-3 cases administratively once the I-130 is approved — making the K-3 path slower than the direct CR-1 for the vast majority of US-Thai couples. NYC advises clients to file I-130 → CR-1 directly unless there is a specific reason (e.g., the US citizen is being reassigned to the US within months and the Thai spouse must follow on a non-immigrant visa first).

Couples often ask whether the fiancé(e) K-1 visa is a faster alternative. The K-1 is filed before marriage and brings the Thai partner to the US for a wedding within 90 days of admission — but it is not an immigrant visa, requires a second-stage Adjustment of Status filing (I-485, USD 1,440) after the US wedding, and overall takes 10–14 months plus another 8–12 months for the green card. For couples who plan to live in Thailand for a year or two before relocating, CR-1 is faster and cheaper end-to-end.