I have watched a youtube video that the CPA talked about forming a S corp and dump real estate agent commission into the S corp and pay less tax etc etc. my Question is, for most real estate agents, they are not the owner, they get 1099 with their SSN. How could this be done? How do they convert the commission income to the S corp to separate it from their W2 (if they have a regular job also) ? 

Another question is, what about rental income? if the properties are under my name and I have a mortgage on them, is it possible to have the rental to run under an LLC or S corp? I think my goal is to separate my business/investment income from my W2 income to avoid paying too much tax.

any insight would be appreciated.