Hi Ryan, are there 2020-R1d Payroll Update release notes for 2012 R3? We recently upgraded to AX 2012 R3 CU13 in addition to installing the 2020R1 payroll tax update. There are a few new worker tax code parameter options under the employee such as "Use 2020 W4 Parameters" and "Two jobs" but changing those values and effective dates alone does not change the FIT calculated amount.