Welcome to the DEMO Collin CAD Agent eFile Portal
For the 2025 tax year we will be using this new Agent eFile Portal for submitting protests, evidence, withdrawals, settlements, and toplines. You can also view/download the CAD evidence files and view the Appraisal Notice from here.
For the time being, we will still be utilizing the legacy Agent Portal for informal informational purposes only. There you can view the informal procedures and your scheduled formal ARB Hearing Docket. You can access the legacy portal at: Agent.CollinCAD.org
For technical issues with either site, please submit a help ticket at: Help.CollinCAD.org/efile
For questions regarding AOA's or details of your protests, please contact the Agent Coordinator by email at: 
Forgot Password
An email with a link to reset your password will be emailed to you. If you don’t see this email, check your spam folder.