Lockbox Use for Customer Check Receipts

This framework applies when customer checks are mailed to the company’s office and someone inside the business receives, opens, scans, logs, or deposits them before the funds reach the bank. In a small company, that usually means the accountant, office staff, or finance lead is spending time on paper checks instead of more important work. It matters most when check volume is high enough to delay cash, consume staff time, or increase short-term financing needs.

When checks are sent to the office instead of directly to a bank lockbox, cash reaches the bank later than it should. The delay usually comes from mail delivery to the office, time spent waiting for someone to open and process the check, and delay before deposit. In a small company, this problem is worse because the same one or two finance people are already overloaded. Manual check handling slows cash, adds low-value work, and increases the risk of lost, delayed, or mishandled checks.

Customer checks should be mailed directly to the bank lockbox, not to the company’s office, unless a practical exception applies. The owner of this control should be the Controller, finance manager, or senior finance lead. Daily follow-up may be handled by the accountant or office employee receiving payments. Any check still received at the office should be deposited promptly and treated as an exception. Repeated exceptions usually mean customer payment instructions were not properly updated or reinforced.

Set up a bank lockbox with the company’s main bank and confirm the basic service terms, including deposit timing, remittance images, and exception handling. Update invoice and payment instructions so customers sending checks use the lockbox address instead of the office. Assign one person to review lockbox receipts each business day and make sure remittance information is applied or forwarded for cash posting. If checks still arrive at the office, deposit them without delay and note which customers are still using the wrong address. In a small company, this does not need a complicated tracking process. A simple recurring review of office-received checks is enough to see whether the process is improving.

A lockbox can offset its own cost in two ways: faster cash and less manual work.

Reducing float brings cash into the bank sooner. A simple estimate of the annual cash benefit is:

Annual check receipts ÷ 360 × days reduced × financing rate

Example: If a company receives $5 million per year by check, reduces float by 3 days, and carries an 8.5% borrowing cost, the annual benefit from faster cash is about $3,500, before considering labor savings.

The company should compare that benefit, plus the time saved from receiving, scanning, and depositing checks, against the annual lockbox fee.

If the issue is ignored, the company continues accepting slower cash, unnecessary manual work, and avoidable handling risk.

This framework is less useful when check volume is very low, most customers already pay electronically, or the lockbox fee is greater than the likely benefit from faster cash and reduced handling time. It is also less useful if remittance information is not reviewed promptly after deposit. For some very small businesses, the better answer may be to reduce check payments altogether and move customers toward ACH or other electronic methods instead of improving a paper-based process.