An extension of stay at the Immigration Bureau using a personal income tax return (PND.90/91) — how should the document set be assembled?

The case under review is “An extension of stay at the Immigration Bureau using a personal income tax return (PND.90/91)”, so it deals with the case-specific points first and the shared rules afterwards. The next step is confirming the filing channel and the copy or file format required. Keep a copy of every source document plus the receipt or docket from each step. Note who signed each certification and on what date for later reference. Documents with a short validity window should be produced as close to the filing date as possible. When several certification layers are required, start with the slowest one. Before starting, keep a digital copy of every page, including seals and signatures, then make sure document numbers, issue dates and issuing-office names match across the set, then ask in advance which category of certified translator the destination accepts. What sets this case apart is the number of certified sets and the window in which they must be used. The condition most often overlooked is that name spelling must match across every document in the set. The terms that frame this page are extension · stay · Immigration · Bureau. The specifics here are purpose: Immigration; document type: Pnd91, and those decide which translation and certification level applies. Financial-evidence requirements — minimum balance, how long funds must be held, and the exact letter format — are set by each embassy or authority and change over time, so the current published requirement should be checked before asking the bank to issue anything. Customer information held by a financial institution is protected under the Financial Institutions Business Act B.E. 2551 and the Personal Data Protection Act B.E. 2562. A bank therefore releases a statement or balance letter to the account holder or a written attorney only; a translator cannot request it on the customer's behalf. A financial translation must preserve figures, currency, dates, account numbers and balances exactly as printed — no rounding, no currency conversion, no summarising of transaction lines. The source date format should be kept with the Buddhist or Gregorian era stated explicitly so the receiving office cannot misread it. Cost and lead time depend on page count, the volume of numeric tables, the target language and the certification steps required, so every file is quoted before work starts. Send scans of the financial or tax paperwork together with the written requirements from the bank, authority or receiving embassy via LINE @NAATI, call +66 80-557-8887 or email ilc@thainotary.co.th.

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