Net royalty income from intangible property held by a pass-through entity in which you own an interest may be treated as nonpassive royalty income. This applies if you acquired your interest in the pass-through entity after the partnership, S corporation, estate, or trust created the intangible property or performed substantial services or incurred substantial costs for developing or marketing the intangible property.
A working interest in an oil or gas well which you hold directly or through an entity that doesn’t limit your liability (such as a general partner interest in a partnership). It doesn’t matter whether you materially participated in the activity for the tax year. However, if your liability was limited for part of the year (for example, you converted your general partner interest to a limited partner interest during the year) and you had a net loss from the well for the year, some of your income and deductions from the working interest may be treated as passive activity gross income and passive activity deductions. See Temporary Regulations section 1.469-1T(e)(4)(ii).
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Next, make sure to know the difference between “Top Grossing” and “Top Paid”. They are both very different rankings. “Top Grossing” is what you use to study what is making the most money. “Top Paid” is more so for trending. More downloads doesn’t necessarily mean more revenue. Personally, I study both. However, “Top Grossing” is better at giving you an idea of revenue potential.
MBJ is an LLC formed by a group of practicing physicians in 2004 for the purpose of operating a surgery center. For income tax purposes, it is treated as an LLC, and it hires its own employees. It bills patients directly for facility fees and then distributes each members' share to him or her based on his or her share of the earnings, which is the facility fees less expenses. It uses a third-party accounting firm to prepare the Schedule K-1, Partner's Share of Current Year Income, Deductions, Credits, and Other Items, and all other accounting matters for the members. MBJ does not pay members/managers for the procedures they perform.
I have only dabbled in drop-shipping before when I had an eCommerce platform 6 years ago or so. I think it is something that you could do on the side, but you would want to do in depth research on the industry you want to get into before setting up shop. It may be a little less passive up front, but over time you could take your hands off the wheel.