This is my first post here, so I apologize in advance if I should ask this somewhere else. I am building a website for my Grandmothers Arts & Crafts store so she can get off of Etsy. She doesn't know, nor do I, how much she needs to make before she is required to register her business so she does not get in trouble with the IRS for making people rugs. We live in Michigan, USA. She already keeps track of all of her expenditures and invoices carefully, and knows how to register etc. Does anyone know a good resource for this information or have experience of their own?