Proration Engine — Calculates the fractional charge or credit when a change lands mid-cycle, so the invoice matches actual days of service at each price. Every lifecycle event — upgrades, downgrades, amendments, pauses — routes through it, and its output flows straight into invoicing and rev-rec.
Proration Engine lives in the Lifecycle Changes phase of Run Revenue Operations — the stage where you collect the cash, close the books, keep customers healthy. In the corpus tool index this phase maps to the Billingcategory.
The critical requirements that test this capability in UsagePricing's Usage-based billing & metering rubric — scored tool profiles link from the list below.
Do mid-cycle changes, consolidation, and multi-currency come out right?
The bar: Proration engine handles amendments/pauses; consolidated and hierarchy-aware invoicing; multi-currency rating.