Reading side letters before you trust the rate card

Rate cards look clean. Customer files often do not. A sales director’s email promising two free months, a credit note issued after a service outage, or a side letter capping annual increases can all change the transaction price even when the master agreement still shows the published fee.

Where we find gaps

In reviews for membership and retainer businesses, the largest differences between billed and recognised amounts usually come from informal concessions that never reached the revenue schedule. Billing may have applied the credit; recognition stayed on the original allocation.

A lightweight control

Require every credit above a set threshold to cite a contract clause or an approved concession form. Once a month, have someone outside sales reconcile concession forms to the deferred revenue roll-forward. The exercise takes an afternoon and catches many cut-off issues before they harden into audit findings.