All toolboxes are inclusive of the Toolbox prior to them. If you load C, it will include everything in A and B.
If you loaded toolbox A, and are not in a State listed in the later toolboxes, and do not use .IRS LEVY, you do not need to get the later toolbox. If your state is listed in a later toolbox and you use .IRS LEVY please use the later toolbox.

Release A includes updates to the following data items for Federal use:
* .E FICA (FICA - Employer share)
* .FICA (FICA - Employee share)
* .FWT (Federal Withholding)
* .FWT NRA (Withholding Adjustment for Nonresident Aliens)

Release A includes updates to the following data items for state and local use:
* .CTY YKRS (City of Yonkers)
* .IN COUNTY (Indiana Counties)
* .SDI CA (California Disability Insurance)
* .SWT CA (California)
* .SWT DE (Delaware)
* .SWT KY (Kentucky)
* .SWT ME (Maine)
* .SWT MN (Minnesota)
* .SWT NY (New York)

Release B includes updates to the following data items for state and local use:
* .SWT CT (Connecticut)
* .SWT KS (Kansas)
* .SWT MA (Massachusetts)
* .SWT MO (Missouri)
* .SWT NC (North Carolina)
* .SWT ND (North Dakota)
* .SWT NM (New Mexico)
* .SWT OK (Oklahoma)
* .SWT RI (Rhode Island)
* .SWT VT (Vermont)

Release C includes updates to the following data items for Federal use:
* .IRS LEVY (IRS Levy)

Release C includes updates to the following data items for state and local use:
* .SWT IL (Illinois)
* .SWT MI (Michigan)
* .SWT OR (Oregon)

Release D includes updates to the following data items for state and local use:
* .SWT WI (Wisconsin)