The LeaseWave® lease accounting software system has extensive delinquency modeling capabilities. The leasing system allows users to set up delinquency templates centrally and then associate them with the relevant leases, effectively allowing for the definition of late-charge formulas at the lease, customer and system-levels. These templates accommodate for all charge methods, including compounded APR, Flat Rate, % of Payment and any user-defined methodology, including combinations of types. Running a periodic delinquency update within the LeaseWave® lease management system will charge the relevant penalties on accounts with overdue balances. The update feature is as simple as clicking a few buttons and runs at a rate of up to 15,000 accounts per minute.