It can be difficult to determine whether you need a license for business, especially if you run your business from home. To determine whether you need a license, ask yourself whether your business can affect a customer�s health and well being. If your business has anything to do with health, medical services, or food, you will need a license. You also need a license if your business offers financial advice or any sort of public service. It�s also important to remember that you will need a business license before applying for a business bank account or loan. If you need financing or other financial services, you will need a business license. A license tells lenders that you run a legitimate business, which will make it easier to get the funding you need.