Resource Library

Provides software interface specification of an electronic version of the National Medical Support Notice for the employer

For state agency staff, this explains some differences between independent contractors and employees

Tips and options to help employers switch from paper checks to electronic payments to states

Template for organization to submit multiple Federal Employer Identification Numbers (FEIN) during the registration process

Guidance on what can and cannot be changed on the standard OMB-approved IWO form

Steps to take if your employee is called up for active duty

Provides a processing overview and technical specifications for the electronic transmission of income withholding information

The flowchart shows how the Income Withholding for Support form is processed by employers and child support agencies

Explains actions private employers and federal agencies must take when an employee is terminated or rehired

Provides the universal record layouts for the e-IWO system