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Customer Account Data Engine
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<p>Customer Account Data Engine (CADE) is the name of two <a href="/facts/Internal_Revenue_Service/GBdRoslU">Internal Revenue Service</a> (IRS) tax processing systems, used for filing <a href="/facts/Tax_return_(United_States)/gGAjU6l4">United States income tax returns</a>. Work on the original CADE, designed to replace the <a href="/facts/Individual_Master_File/FnHMjMwP">Individual Master File</a> (IMF) system, was begun in 2000 and stopped in 2009. The original CADE is in active use; for instance, in 2009, it was used to process over 40 million tax returns. </p><p>In 2009, work began on CADE 2, with an initial planned implementation date of 2014 for major functionality. However, CADE 2's major functionality is not expected to be used until 2023 (as of 2021) and the full system is not expected to be implemented until 2030. </p>