Glossary · Collections
Cash application
Also called Payment matching
Cash application is matching each incoming customer payment to the invoices it pays, so those invoices close and the customer’s balance is right.
When money arrives, someone — or software — has to decide which invoices it settles. Cash application uses the payment reference, the amount, the payer and any remittance advice to make that match, then marks the invoices paid.
It sounds clerical, but it drives everything downstream. Until a payment is applied, the invoices it covers still look overdue: customers get reminders for money they have sent, aging reports overstate the problem, and DSO looks worse than it is.
Most matching problems come from the payment side: no invoice number in the reference, one transfer covering many invoices, or partial and short payments. Asking customers to use the invoice number as the reference fixes the majority.
Example
A €14,600 payment arrives referenced “INV-0139 INV-0142”. The two invoice amounts add up to exactly €14,600, so both are closed automatically, and neither customer contact gets the reminder scheduled for that afternoon.