If neighboring domains issued han bills, there was a possibility that good currency (coins issued by the shogunate) was exchanged for bad currency (bills issued by neighboring domains which had low credibility), which could affect the economy of the domain.
近隣の藩で藩札が発行された場合、領内の良貨（幕府貨幣）が悪貨（近隣の藩が発行した信用の裏付けの弱い紙幣）に取って代わられる、言い換えれば良貨を近隣他領に吸い上げられることは自領の経済活動に悪影響が及ぶ可能性があった。