COB Secure Web Site

Welcome to the IRS/SSA/CMS Data Match Web site

Data Match Messages

***Attention*** Upon logging into the Data Match Secure Website, if you do not see your EIN populated within the EIN Listing screen, please click on the Home link at the upper left hand corner of your screen. The data for your EIN should then display appropriately.

This site provides employers with an efficient process for responding to the Internal Revenue Service (IRS)/Social Security Administration (SSA)/Centers for Medicare & Medicaid Services (CMS) Data Match.

This secure Web site provides Employers, regardless of size, with information about the Data Match process, and the ability to respond to the Data Match Questionnaire via online screens, or upload and download Employer files created for the Electronic Media Questionnaire (EMQ) response method.

In order to submit your IRS/SSA/CMS Data Match response through one of these available electronic submission options, you must assign an Account Manager to register for this service. The Account Manager must be an individual authorized to access the Secure Web site, provide responses to the questionnaire, and authorize Designees, who will have the authority to respond to questionnaires using one of the following electronic options:

Direct Entry
Electronic Media Questionnaire (EMQ)
For information about the availability of auxiliary aids and services, please visit:


Please enter your login information

Forgot Login ID Forgot Login ID Forgot Login ID
Forgot Password Forgot Password Forgot Password

Create a new account manager ID *ACCOUNT MANAGERS START HERE*
Use this link to setup your Login ID & Password or to Reactivate your account from a previous year.

New Users Click Here Create a new account manager ID