MD 500 Information

Every Maryland corporation must file an income tax return on Form 500, even if it has no taxable income or if the corporation is inactive. Every other corporation that is subject to Maryland income tax law and has income or losses attributable to sources within Maryland also must file Form 500. Corporations operating in Maryland and in one or more other states are subject to Maryland income tax if their Maryland activity exceeds the provisions for federal protection from state taxation.

Link to official form info:

Link to official form info for 500

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To access the official link to form MD 500 and get reminded when it's due, sign up for a free Tax Reminder account:

  • Upcoming Due Dates in the Next Year:*
  • Friday Mar 15, 2024
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    * Due dates are based on the filing requirements for this form and may vary depending on your tax year.

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