I have a c corp but have been filing form 1040 Schedule C for years. How do you correct this? do you go back & fix prior years? What tax consequence would there be?

concerned · ‎May 31, 2019

Would filing 1120 going forward with the real formation date on it trigger anything on the past returns that were filed on wrong forms?

I have a c corp but have been filing form 1040 Schedule C for years. How do you correct this? do you go back &amp; fix prior years? What tax consequence would there be?