Japan accommodation tax — calculation & change tracking, as an API.

Municipal accommodation-tax (宿泊税) rules change constantly: Kyoto's 5-tier revision, Kutchan's percentage rate, 28 new municipalities in the June 2026 update alone. Yadozei tracks every ordinance and ships a hosted, always-current API plus change alerts so PMS, booking-engine and channel-manager vendors stay correct.

The calculation engine is the open-source japan-stay-tax library (MIT). Yadozei is the commercial layer on top: a supported, always-current API and a machine-readable change feed.

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