In December of 2007 an error occurred in a new ERP payroll system for a large urban school system. More than one third of employees had received incorrect paychecks that results in overpayments of $53 million. Inadequate testing reportedly contributed to the problems
A software error reportedly resulted in overbilling to 11,000 customers of a major telecommunications company in June of 2006. Making the corrections in the bills took a long time.
In March of 2002 it was reported that software bugs in Britain's national tax system resulted in more than 100,000 erroneous tax overcharges.