So following that line of thinking - there are many businesses that have a “cash component” and would be a “grey area”. There is no business that deals in cash that claims 100% of it??It is work, but the fact that it is in the grey zone allows SP to chose how much of income to show (through "set-up companies") for tax purposes and I am absolutely sure almost all SP show just a portion of it that will allow them to have track record of income for credit purposes and any possible tax audit. A fully legalised prostitution with brothels that control number of clients per SP and may even have these numbers for each individual SP will make hiding large portion of income much harder
Bars / Restaurants - for Waitresses / Waiters.
Taxi Cab Drivers, Bell Hops, Doormen, Pizza Delivery , Any “Take out” food delivery,
Renovation Contractors / Land Scapers / House Painting etc, etc, etc - list goes on and on and on.

