noun
An official document issued by an authority granting permission or certifying approval. Used in formal and administrative contexts.
営業を始めるには、市から認可証をもらう必要がある。
To start the business, you need to obtain a license from the city.
この認可証は一年
This certificate must be renewed every year.
許可証 is a general permit, often for a specific event or temporary activity, whereas 認可証 implies formal approval from a regulatory body.
Compound of 認可 (にんか, 'approval, authorization') and 証 (しょう, 'certificate, proof').