How much it cost to file chapter 7 for small business in Michigan.

You need to talk to a good lawyer. I would say that about 90% of the folks who contact me to file Chapter 7s for businesses don't really need to filed; they usually just need to close the doors in an orderly fashion. Often, that leads to a personal Chapter 7, but the business rarely needs one. Not never, but rarely. Good Luck. Cost depends entirely on the situation.