How do I log into the Company Tax Application?
You can log into the Company Tax Application one of two methods. (A) Click on Online Services from our home page; scroll down to Registered Company Users; choose File/Amend Tax Return or File Quarterly Taxes. You will need your user id and password to log into the applications. (B) Click on SCDOI Connect Login from our home page and enter your user id and password.

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1. When will the Quarterly Tax Application be available?
2. How do I log into the Company Tax Application?