In order to maintain a granted South African business permit, the investment amount would need to be invested into the book value of the company within 24 months of receiving the permit.  The Business permit holder is also required to employ 5 South African citizens/permanent residence on a full time basis, as well as register with SARS (South African Revenue Service) for tax reasons.  Proof of the above is required to be submitted to the Department of Home Affairs for the first 24 months, the Department may request to see further proof over the next period of time, this is at their own descretion.

Information supplied by www.intergate-immigration.com