noun
direct debit; account-to-account transfer
A banking service where funds are automatically transferred from one account to another, commonly used for recurring payments like utility bills.
公共料金は口座振替で支払っています。
I pay my utility bills by direct debit.
口座振替の手続きは銀行で行えます。
You can set up an account-to-account transfer at the bank.
Compound of 口座 (account) and 振替 (transfer). The term is a modern financial expression with no obscure historical derivation.