Yeah, federally there's no problem here. It's the state I live in that's the problem.
Any revenue over $12,000 and you have to register with the Department of Revenue, get a business license, and start paying business and occupation tax and sales taxes (if applicable). If your business is subject to collect sales tax at all, you have to register no matter what your gross revenue is. Unfortunately, the state doesn't have any exemptions for sales tax like the EU.
For some states in the US it is quite a bit simpler, unfortunately for mine it's not and it's like they do everything in their power to prevent small businesses.
All business income should be subject to a tiny share of total revenue, maybe with some portion of it being deductible like input materials, durable equipment purchases, and employee benefits. The first US state to truly grasp and embrace this will get flooded with new businesses, but it will piss off the legal and CPA firms.
Any revenue over $12,000 and you have to register with the Department of Revenue, get a business license, and start paying business and occupation tax and sales taxes (if applicable). If your business is subject to collect sales tax at all, you have to register no matter what your gross revenue is. Unfortunately, the state doesn't have any exemptions for sales tax like the EU.
For some states in the US it is quite a bit simpler, unfortunately for mine it's not and it's like they do everything in their power to prevent small businesses.