Parent-subsidiaryA parent-subsidiary controlled group exists when one or more chains of corporations are connected through stock ownership with a common parent corporation; and:80% of the stock of each corporation, (except the common parent) is owned by one or more corporations in the group; and Parent corporation must own 80% of at least one other corporation.2.

Most traveling medical professionals are working for one of the big companies such as Medical Solutions, Aya Healthcare, or one of their subsidiaries.

Each LLC is owned by a WY Holding Company.The subsidiary LLC's are disregarded entities and the income flows back to the holding company for consolidated banking and tax filing. 

Unless, they are vested in a subsidiary that the LLC ultimately owns.

The 4 LLCs are subsidiary LLCs to a parent LLC.

In those cases one would look to the Operating Agreement or corporate bylaws to see the power the mother company granted to its subsidiaries.

After doing some internet research on jurisdictions, etc, I feel like I have a grasp on some basic "rules": -incorporate through a law firm (for client confidentiality) -incorporate in a anonymity haven, and then open up subsidiaries in the state where you operate The things I'm not clear on are are how are the mundane (and one large) business operations functions handled, such as: -who signs a property lease or mortgage paperwork?

@Derek AllenMost of the Big-5 owned brokerages will still allow a non-arms length mortgage to be held by a registered account (Self-directed RSP, TSA or RIF (not sure about RESP)) - but in today's interest  rate environment the costs and overhead of having your registered account lend to you is quite likely not a good use of funds.If you want to hold lend arms-length notes and hold mortgages in a registered account, the only lenders left doing this (as of 2012/2013) were:B2B Trust (a subsidiary of Laurentian Bank);Canada Western Trust;Olympia Trust; andEastern Trust (a boutique lender in NFLD). 

Try CBIC - they are a national firm, and a subsidiary of a public company.  

I do this right now in 6 different cities across the US. 2) If you're Canadian, a few of the Canadian banks have programs for US investment through their US subsidiaries.