In the case of an activity with respect to which any deductions or credits are disallowed for a taxable year (the loss activity), the disallowed deductions are allocated among your activities for the next tax year in a manner that reasonably reflects the extent to which each activity continues the loss activity. The disallowed deductions or credits allocated to an activity under the preceding sentence are treated as deductions or credits from the activity for the next tax year. For more information, see Regulations section 1.469-1(f)(4).
One side note worth highlighting here – it is a common misconception that passive investment income earned within a corporation can be taxed at the lower small business tax rate. This is incorrect as passive income is generally taxed at about the same rate (over 50%), whether earned inside or outside a corporation, so there is no real benefit, per se, from earning investment income in a corporation. Rather, the advantage is that the corporate entrepreneur is able to temporarily invest the amount of taxes deferred by delaying the withdrawal of funds from his/her company.
The Hardy’s used a partner and tax director at an accounting firm with more than 40 years of experience to prepare and file their tax returns. In 2006 and 2007, the Hardy’s reported their income from MBJ as non-passive based on the CPA's professional judgment. They claimed a total disallowed loss and he determined that the income was non-passive based on MBJ's Schedule K-1 that it distributed to Hardy.

Generally, any gain or loss on the disposition of a partnership interest must be allocated to each trade or business, rental, or investment activity in which the partnership owns an interest. If you dispose of your entire interest in a partnership, the passive activity losses from the partnership that haven’t been allowed generally are allowed in full. They also will be allowed if the partnership (other than a PTP) disposes of all the property used in that passive activity.
Investing in a business: Another good way to generate passive income is to invest in a business --even a small one -- in return for a percentage of the profits - just like Shark Tank, only smaller. Lending $10,000 to a local business that, for example, is working on a mobile app for Apple phones could lead to a passive income-generated share of the profits when that mobile app starts selling like hot cakes.
Passive income is definitely the goal and I think you hit it on the head with the point about upfront work. That actually coincides well with most physician careers. Work hard like a resident and spend like a resident to build up an investment portfolio right away while you are young and full of piss and vinegar. It then has time to grow and be there for you as you need or want to slow down because of aging or kids etc. Plant the seeds early and then live off the crops.
Hardy struggled to find space at the hospitals to conduct his procedures. Due to this difficulty, Hardy considered opening his own surgery center. He purchased land and developed plans to build this surgery center; however, before construction started, MBJ representatives approached Hardy to ask him about becoming a member. Mr. Hardy concluded that becoming a member/manager of an established surgery center was a better business decision than building his own surgery center due to the cost of construction, staffing, certifying, and operating the center.
I just wanted to say how nice it is to see such a positive exchange between strangers on the Internet. Seriously, not only was this article (list) motivating and well-drafted, the tiny little community of readers truly were a pleasant crescendo I found to be the cause of an inward smile. Thank you, everyone, and good luck to you all with your passive income efforts!! 🙂