I own a new LLC as a sole proprietor and plan to file profits through my personal tax return. However, my business is entirely online and dependent either on affiliate or dropshipping channels.

For affiliate sales, my understanding is that I am not responsible for collecting sales tax, and owe only profit as income tax.

For dropshipping, I ship from outside the US to any US state. My understanding is that I currently only have to pay for sales tax for the single state in which I have a physical premise (my residence). Is this correct, and will this be changing due to the new tax laws?

Am I on the right track and doing everything right?