Hello everyone, I would appreciate your guidance on the matter below; So, we are a startup game studio in Korea who wish to launch an iOS game app thru the App Store in the US and some regions in Europe. Obviously we'll be paying tax in Korea once we receive payments after Apple's 15% cut. Most of us lived and worked in the States back in the day to understand that there are Fed and State taxes to be paid separately in the States. Our app will have in-app items for purchase, obviously, and we wish to generate revenue from it. My question is, other than Apple's 15% cut from the App Store (since it's a launch product and I'm sure I'll make less than 100K in the first year lol), A. what other tax factors do I have to consider when my app gets released in the States? B. Since it's a digital product that's been released in the States with no satellite offices, so States tax even matter? If so, C. As far as I know California has 0% digital good tax including in-app purchases. Would it be a good idea to look into California for this? And last but not least, D. What else could we be missing here? I'd very much appreciate your insights and advices as I wish to launch my app properly and pay my dues where its necessary. Thank you for you time, guys.