For mutual banks, it was possible to have dedicated products for mutual banks called mutual premiums, a system similar to Mujin, but it became in name only in the early stages because the mutual premium system itself was very different from Mujin and managing it was tiresome.
相互銀行では、無尽に類似した制度である相互掛金という相互銀行専用商品が可能であったが、相互掛金制度自体が無尽とは大きく異なるものであったことや、取扱が面倒なことから早期に有名無実の制度となった。