You can receive your new Sales Tax License in as little as 7 business days! The Michigan Department of Treasury offers an Online New Business Registration process.This process is easy, fast, secure and convenient. A business sale transaction can take several forms: (1) sale of assets, (2) sale of stock, (3) merger, ( 4) consolidation, or (5) share exchange. Use a Business Bill of Sale to set out the terms for the sale of a business and transfer the ownership and all assets to the buyer. A buysell agreement is a contract that outlines the contingencies of a partnership deal. Also known as a business continuation agreement or buyout agreement. Learn the answer to your question, "How to sell my business?" from our experienced Michigan business attorney. If you are purchasing a business in the state of Michigan, you need to be aware that you may be responsible for the previous owner's liability.