To validate active user counts there is reporting available to administrators. Please note that this will give you a count of all of your active users (At least one module needs to have a license count above this number). Counts are pulled as of a date. If additional employees are processed or removed from a process after the report date the numbers will not match exactly.
Detailed Information
1 - Navigate to Admin Home > Site Administration > Users and Security > Users >
2 - Filter for (Inactive= False) >
3 - Click Reports > Export to Excel >
4 - If prompted, be sure to check Export All Rows Of Data