Hello, I'm based in the USA and am doing business with a USA based affiliate network. In accord with my method, I'm about to begin operating multiple accounts with this network -- each will need separate tax info. So my plan is to make separate EINs for each one. I'm hoping to eventually scale to about 10 accounts. How will this end up going at the end of the year when I need to file taxes? Also, when this happens, will I be filing as a sole prop, or what..? Are there any ways to structure things off shore in order to lower my effective tax rate?