To deposit money into an account or to pay money into a designated place (e.g., bank account, subscription payment).
毎月、家賃は自動的に口座へ払い込まれる。
Every month the rent is automatically paid into the account.
入学金を指定の口座に払い込んでください。
Please pay the entrance fee into the designated account.
保険料はコンビニで払い込むこともできます。
You can also pay the insurance premium at a convenience store.