The Taiwan Arrival Card (TWAC) — mandatory for foreign visitors entering Taiwan by air or sea since October 2025 — can now be submitted up to seven days before arrival, up from the previous three-day window, per the official TWAC portal. It is not a visa; it is a compulsory digital step that applies whether you enter visa-free or with a visa.
The form collects passport data, purpose of visit, flight or vessel details and accommodation, starts with an email verification, and is available in English, Chinese, Japanese, Korean, Indonesian, Vietnamese and Thai. Practical touches: one submission can cover several travelers on the same itinerary, and the card stays editable until the document check at immigration — keep the confirmation e-mail (and its document number) handy for changes.