Clan bills were paper money issued by each clan in its territory on its own initiative during the Edo period. 

In the following, we will focus on "clan bills issued by each clan" in the narrow sense, but in practice, Hatamoto bills issued by Hatamoto, Shrine bills issued by Shrine, A branch of the imperial family bills issued by them, town and village bills issued by local communities, and private bills issued by private individuals are also often treated as clan bills in the broad sense.