I am considering starting an unusual business and would like your opinion on whether I am likely to run into any legal obstacles.

This is a very complex question even though it might appear straightforward.  I believe that the primary legal issues you may need to address are securities law issues (requiring among other things disclosure and sometimes filings to investors, governments, etc.).  Other concerns might be establishing default rights, confidentiality, collateralization, etc.  Many more facts would need to be identified and addresses. You are not selling cash - you are selling the opportunity to particulate in the cash flow of a business (or asset).   Who bears the risk if the cash flow should stop or be less than what is expected?  Who gets the benefit if the cash flow increases?  Who is responsible for managing the assets? You really need to consult with an attorney who is able to analyze al of the specific facts and details. As for tax issues, again, without more details it is not possible to even begin to provide any guidance. This is specific to Florida law and does not constitute legal advice as the facts presented are anonymous and incomplete. This is intended for general education only and does not create an attorney-client relationship. This should not be relied on and you must seek your own attorney client relationship.