Affidavits and sworn declarations designed for overseas use
Sworn statement, declaration, and affidavit services for legal, immigration, and overseas document use.
Who needs this service?
- Visa applicants
- Relationship declaration cases
- Property or business declaration clients
- Foreign clients needing affidavits
Documents to prepare
- Draft affidavit or fact summary
- ID/passport
- Supporting evidence
- Receiving authority instructions if available
How it works
- 1
Fact and purpose review
- 2
Clear wording refinement
- 3
Oath and signing before the notary
- 4
Sealing and issue preparation
Deliverables
- Structured affidavit or declaration
- Notarial certification
- Next-step guidance for translation or legalization
Pricing: Depends on document length and drafting complexity.
ทนาย Notary ใกล้คุณ
กดอนุญาตตำแหน่งเพื่อให้เราจัดอันดับสาขา/ตัวแทนที่ใกล้คุณที่สุด พร้อมระยะทางจริง — หรือไม่อนุญาตตำแหน่งก็ค้นหาด้วย เขต/สถานี ได้ด้านล่าง
ไม่ต้องการเปิดตำแหน่ง? ค้นหาด้วย เขต/สถานี
ย่านธุรกิจ
Frequently asked questions
Can the lawyer review affidavit wording?
Yes. We help improve clarity, structure, and usability for the receiving authority.
How is an affidavit different from signature authentication?
An affidavit involves sworn factual statements, while signature authentication focuses on confirming the signer and the act of signing.
แหล่งอ้างอิง / Authority References
- ข้อบังคับสภาทนายความ ว่าด้วย Notarial Services Attorney พ.ศ. 2546 — สภาทนายความในพระบรมราชูปถัมภ์
- การรับรองเอกสารโดยกรมการกงสุล (Legalization) — กรมการกงสุล กระทรวงการต่างประเทศ
- Apostille Convention (HCCH) — Hague Conference on Private International Law
- NAATI — Certified Translators (AU) — National Accreditation Authority for Translators and Interpreters
Ready to start?
Send us your document over LINE and we will quote within minutes. Same-day appointments available across Bangkok.
Service steps at a glance and the documents you need first
An affidavit is a statement of facts confirmed by the deponent and signed before a Notarial Services Attorney. The attorney certifies that the person appeared and signed, not that the contents are true. The document is then legalised at the Department of Consular Affairs and, where the receiver requires it, at the destination embassy.
How the work runs
- Define the facts to be stated — 1–3 business days (estimate)
- Draft and attach exhibits — 1–3 business days (estimate)
- Sign before a Notarial Services Attorney — Same day
- Legalise at Consular Affairs — 2–5 business days (estimate)
- Embassy legalisation and delivery — 3–15 business days (estimate)
Documents to prepare first
- • Original passport or Thai ID card
- • Draft statement setting out facts in numbered paragraphs, with date and place
- • Supporting exhibits such as registrations, contracts, receipts or photographs
- • The wording or template required by the foreign lawyer or court
- • Translation into the destination language accepted by the receiver
- • Company affidavit and evidence of the signatory's authority
When a foreign filing date is fixed, our advisers help draft, organise the exhibits and run every certification layer in time. Send us the case details to start.
Durations are working-day estimates excluding agency queues and are not a guarantee of any decision.
Official sources & further reading
Statements on this page follow the authorities below. Confirm current requirements with the authority before filing. Last reviewed 2026-07-29.
- Lawyers Council of Thailand — Notarial Services Attorney register — สภาทนายความฯ / Lawyers Council of Thailand
- Department of Consular Affairs, MFA Thailand — document legalization — กรมการกงสุล MFA
- HCCH Apostille Convention (1961) — full text & status table — HCCH (Hague Conference on Private International Law)
- MFA Thailand — embassies and consulates in Thailand — MFA Thailand
Related questions
- What is the fastest way to reach you?
- Call or message on LINE during business hours for an initial route check, and send legible photos of the documents by email or LINE so the scope can be assessed accurately.
- Where do I start if I am unsure which certification I need?
- Start with three questions: which authority will receive the document, in which country, and by what date. Those answers determine the authentication route, the translation language and the full sequence.
- Why are fees not published on the site?
- Scope varies widely with document count, language and the consular steps involved, so we quote against the actual work and confirm details by phone, LINE or email before starting.
- Do you serve clients outside Bangkok?
- Yes — we serve clients nationwide and overseas, receiving documents by post or courier and scheduling signing appointments when in-person attendance is required.
Related services
- Comparing apostille and consular legalizationSide-by-side of steps, authorities and legal effect
- Authentication route by destination countryPer-mission conditions collected in one place
- Certified true copy by an attorneyFor authorities that will not accept originals
- Drafting and notarising an affidavitSworn before a Notarial Services Attorney
- Prepare your notarisation remotelySend drafts for review before the appointment
- Corporate and company documentsDBD records and consular steps for companies
- Case exhibits and certified translationsFormats accepted by the courts and MoJ
- Quick answers before you contact usOrganised by service and receiving authority
Fees are not published online — ask our team by phone, LINE or email for a scope-based quote.