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  1. Does Colorado State recognize an automatic federal extension, form 7004?
  2. When should I file my Colorado State Corporation Tax Return?
  3. Where do I mail my Colorado Corporation Tax Return?
  4. Which Form should be used to file a Colorado State Corporation Tax Return?
  5. When are the Colorado "C" corporation estimated income tax payments due?
  6. How many Corporation Income Tax Rates does Colorado State have for Tax Year 2008?