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Filing Process
- Please review D.C. Code 47-825.01(G) (H); to note deadline period for filing Assessment Appeals with D.C. Superior Court.
- Tax Office cases are governed by the Superior Court Tax Rules.
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Mandatory eFiling
- In 2011, the Tax Office initiated mandatory electronic filing for the legal community. Therefore, you will need to register with CaseFileExpress (CFX) at http://www.casefileexpress.com.
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- Once you have registered with CaseFile Express (CFX) you are ready to start filing.