The disclosed telecom information processing system and method thereof allows a telecommunications provider to enable its business and organisational customers to view, report on and analyse the expenses that have been billed (historical invoicing periods) or will be billed (real-time outstanding invoicing period) to the customer for their usage of telecommunications services (typically call charges and/or data charges and/or other charges) as agreed in their contractual arrangements, by directly ingesting call data records (CDRs) and data usage records from the network and calculating the correct invoicing based on records held in the software invention, defining those contractual arrangements.