I just got an email from an administrator at work describing how certain parts of my compensation need to be handled for income tax purposes. I am in an academic position and this administrator handles most issues seamlessly, so I wish I could ask her to take care of this and let me do my research. But no, that's not allowed by law. Even if I hire a tax professional to handle this, I will have to take care of it separately from my normal economic arrangements.
It makes me wonder how income tax is handled for cooperatives and communes. I assume that they need to find some nominal accounting of individual income for tax reporting purposes. So it seems that even if several persons were to integrate all aspects of their economic lives, they would still be required to act and account as individuals once a year. That's annoying, and one more handicap on the development of alternative economic arrangements.