The cornerstone of the IRS’s efforts to modernize its computerized return-processing system is progressing in capacity and performance, the IRS said in a news release. The Customer Account Data Engine (CADE) had handled more than 15 million individual tax returns by March 7 in the 2008 tax filing season, more than the 11 million returns for all of 2007. CADE allows the Service to update taxpayer accounts daily, rather than the weekly ability of its predecessor, the Master File system, parts of which date back to the Kennedy administration. As of January 2008, CADE could process certain forms 1040, 1040A and 1040EZ, as well as schedules C, E, F and EIC. The IRS is rolling out additional system capabilities this year.