The StateW4.com service is a hosted solution for the preparation of withholding certificates. The employee prepares their withholding forms online, and the completed forms can be printed for paper submission, encrypted and emailed to the Payroll/HR department, or posted to a designated server. Validation takes place at the field and form level to assure that data is correct, mandatory entries have been made and no conflicts exist. StateW4.com also includes the Multi-State Library function which determines the proper forms to be prepared, taking into account the home state, work state, reciprocity and nexus settings.


The EEC SDK is a software development kit for fully integrating electronic withholding forms with your internal HR/Payroll applications.  Employees access the SDK to use the Multi-State Library decision making capabilities. The forms are pre-filled with their data and they complete their entries and sign the forms electronically to finish the process.  The transaction data is stored on your server and the payroll system is updated with the new settings---all without paper!  The EEC SDK is compatible with all major payroll applications and service providers.