He has this contact that wants to transfer a few million from Nigeria, and will give you 10% guaranteed, but needs a few bucks up front for administration costs.
I am the contact in Nigeria. Cut out Slab and deal with me directly, it works out better for you. He was going to take a cut of the initial investment as well as the payout. Wire R40,000 to me and in one week you will have R200,000.
Not really. Interest on such an investment is more accurately described as Capital Gains. On which CGT is applicable. If it were "profit", it would fall under your Income Tax.