In banking, a lockbox is a service offered by commercial banks to organizations that simplifies the collection and processing of account
receivables by having those organizations’ customers’ payments mailed directly to a location accessible by the bank.
In general, a lockbox is a post-office box (PO box) that is accessible by a bank. A company may set up a lockbox service with its bank for receiving customers’ payments. The company’s customers send their payments to the PO box. Then the bank collects and processes these payments directly and deposits them to the company’s account. Typical costs are several cents per transaction to as high as one dollar or more.
Lockbox services are sometimes called “remittance services” or “remittance processing”.
One benefit of the lockbox service to the commercial customer is that it can maintain special mailboxes in different locations around the country and a customer sends payment to the closest lockbox. The company then authorizes a bank to check these mailboxes as often as is reasonable, given the number of payments that will be received. Because the bank is making the collection, the funds that have been received are immediately deposited into the company’s account without first being processed by the company’s accounting system, thereby speeding up cash collection.