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POSC Overview
General Help
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If you are having trouble accessing the Help Topic links you need to go to the Tools option at the top of your browser and click on the Compatibility View Settings. Verify that under Add this website you see marylandtaxes.com. If so, then click on the Add button and then the Close button. If not, then you need to enter marylandtaxes.com in the box then click on the Add button and then the Close button. You may need to restart your browser.

  • First time users, please read the (Help Topics) listed in the left menu.

  • For concerns not addressed in a specific (Help Topic) use General Help

  • A link for Feedback / Suggestions will be provided after successful logon

  • For assistance with POSC, please email POSCHELP@comp.state.md.us.

  • If you have forgotten your LogonID or Password please use the Recover LogonID /  Reset Forgotten Password process.

Sign Up First time using the POSC?

Use this process to create a LogonID and Password.
Logon Access the POSC using your LogonID and Password.

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