Address Change

You can update your address information through the following website. 

https://interactive.marylandtaxes.gov/extranet/cpb/posc/user/start.aspx

If you already have a POSC log-in and password:

If you do not have a POSC log-in and password:

  • Click on the POSC website: https://interactive.marylandtaxes.gov/extranet/cpb/posc/user/start.aspx
  • Click “Sign up” to create your logonID and password.
    **Passwords will expire every 90 days**
  • Follow the prompted steps to create your logonID and password.
    You will need the following:

    • Your Social Security Number
    • Your Date of Birth
    • The University’s Agency Number is – 360222
    • Check/Advice Number from your most recent paystub (Instructions are below)
  • Once you have created a logonID and password, follow the steps above to verify your tax and direct deposit information.

How to Find Your Check Advice Number

Follow these steps to locate your check advice number:

  1. Log in to Workday.
  2. In the Search bar, type: My Most Recent Payslip.
  3. Click OK. (Please note, this process may take a minute.)
  4. Once loaded, click the PDF in the red top menu bar on the right side of the screen. (This process may also take a minute.)
  5. Your check advice number will be listed in the top row of the check image

If you are a new hire or rehire, you may not have a payslip in Workday yet to establish your POSC account. Once you receive your first paycheck, please return here to set up your POSC account.

Please note that PSYCpayroll cannot assist with the POSC system, as it is managed by the State of Maryland. Instructions related to the POSC system are provided as a courtesy and may not reflect any changes made by the State of Maryland. For any issues or inquiries related to the POSC, please direct your questions to POSCHELP@marylandtaxes.gov. 

Issues not related to the POSC system should be directed to psycpayroll@umd.edu