One-stop service — certified translation + Thai MFA + Embassy of Mongolia at ซอยเอกมัย
Affidavit → Embassy of Mongolia: step summary
Step
Turnaround
Cost
Translate Affidavit
1–3 days
THB 800–1,500 / page
Thai MFA legalization
2–3 days
THB 200–400
Embassy of Mongolia
10-21 วัน
สอบถามเจ้าหน้าที่
NYC Legal service
—
สอบถามเจ้าหน้าที่
Estimated total
7–21 days
THB 6,000–12,000
Popular documents at the Embassy of Mongolia
ApostilleMongolian Translation
Legalising a Thai Affidavit for Mongolia
Getting a Thai Affidavit recognised by the Mongolia authorities almost always requires a full legalization chain rather than a single stamp. Because Thailand is not a party to the Hague Apostille Convention for this route, a Affidavit issued in Thailand cannot simply be apostilled — it must first be certified by the Thai Ministry of Foreign Affairs (Legalization Division, Chaeng Watthana) and then authenticated by the Embassy of Mongolia in กรุงเทพฯ (เอกมัย). NYC Legal manages this end to end so you never have to queue in person.
Why the legalization chain is required
Legalization is a chain of trust, not a formality. When a Mongolia officer sees the embassy stamp on your Affidavit, they are trusting the embassy, which trusted the Thai MFA, which trusted the issuing office. NYC Legal builds this chain in the correct order so the final Mongolia authority accepts the document without follow-up questions.
Certified translation requirements
Most Mongolia authorities require the Thai Affidavit to be accompanied by a certified translation into a language the mission accepts — typically English, or the official language of Mongolia. The translation must be faithful, complete, and produced by a translator whose signature the Thai MFA can verify. We use MFA-recognised translators so the translation itself can be legalised alongside the original.
Transparent, itemised pricing
The Mongolia embassy fee for a Affidavit (สอบถามเจ้าหน้าที่) is set by the mission and can shift with exchange rates, so we confirm it at booking. Add MFA legalization, certified translation, and our transparent service fee (สอบถามเจ้าหน้าที่) and the all-in figure is usually THB 6,000–12,000 for one document — with volume discounts for family or corporate batches.
Realistic timelines you can plan around
Plan for 10-21 วัน at the Mongolia embassy stage, on top of 2–3 business days at the Thai MFA and 1–3 days for certified translation. Realistically a single Affidavit takes 7–21 business days end to end. If you have a visa interview or filing deadline, tell us first — express MFA and priority embassy handling can compress this materially where the mission allows it.
What a legalised Affidavit is used for
A legalised Affidavit is commonly required by Mongolia for immigration and visa applications, marriage registration, family reunification, university admission, employment and work authorisation, pension and social-security claims, property or inheritance matters, and company registration. The most requested documents at the Mongolia mission include Apostille, Mongolian Translation.
Common mistakes we help you avoid
Common mistakes with a Affidavit for Mongolia: wrong order of stamps, an unverifiable translator, mismatched transliteration of names, missing supporting documents (e.g. a marriage certificate needed alongside a name-change record), and booking the embassy before the MFA step is complete. Our review catches these before they cost you a wasted counter visit.
Why work with NYC Legal
Our value is certainty. We know the Mongolia mission's current requirements for a Affidavit, we use MFA-recognised translators, and we sequence the chain correctly the first time. That means no repeat consular fees, no missed deadlines, and a document your Mongolia counterpart will accept without objection.
Full legalization chain
Step
Where
Time
Note
1. Certified translation
NYC Legal — MFA-recognised translator
1–3 days
Affidavit translated into an accepted language, full layout mirrored