All business structures that would do what you want will involve some paperwork and fees: that is because you are creating and registering a new business entity. There is no way around that. The two best structures for your purposes are the LLC and the corporation, and of the two, the LLC is probably slightly better--it's involves somewhat less paperwork and formalities. As a practical matter, if the idea you have is not worth the fairly minor fees and paperwork involved in an LLC, it's probably not worth pursuing.