Level 15

Doesn't California give you a form or method (such as a California-specific Schedule C) to do that?

Minnesota has a nifty all-in-one form that lists all of the items that MN does not conform with Federal things (mostly new Federal laws and a timing adjustment to Bonus Depreciation).

I would have included the link to that nifty form, but it seems like the MN Revenue site is down right now.