The closet thing to a legal ponzi scheme is a closed-end-fund which is allowed to pay investors interest that includes part of their original investment. They're legal here in the US where folks have a higher acceptance of risk (or just like to gamble), but they may illegal in the UK. As far as I can tell a closed-end fund is a great way to launder money and offset taxes from capital gains.
A Ponzi scheme is a fraudulent investment operation(s) that pays returns to separate investors from their own money or money paid by subsequent investors, rather than from any actual profit earned.
[1]
A managed distribution policy is a distribution policy approved by the SEC whereby a closed-end fund (CEF) can effectively make systematic distributions of a return-of-capital to its shareholders.
[2]
It’s all about Disclosure: The key difference between
Madoff’s Ponzi scheme and
Cornerstone Progressive Return Fund is one of
disclosure.
CFP, by disclosing it is paying its shareholders back its own money through the establishment of a managed distribution program (Rule 19a-1), is essentially separating itself from the criminal aspect of a Ponzi scheme, i.e.,
fraud.
CFP is telling its shareholders with the blessing of the SEC that “this is your capital and you’re getting it back in the form of a distribution”. Madoff’s crime was essentially one of non-disclosure.
The Value of Good Advice: If Madoff was properly advised, he could have—early in the process of the Ponzi scheme, “rolled up” his accounts into a closed-end fund,
Madoff Progressive Return Fund (MAD), received approval by the SEC to institute a managed distribution program, and continue to distribute back to the shareholders’ their own money with impunity.