Nedbank Private Wealth saw after-tax profits rise by 33% in 2012.
Excluding one-off revenue factors, year-on-year profit growth still remained impressive at 15%.
The firm, which rebranded from Fairbairn Private Bank in October last year, also saw encouraging growth in the first quarter of this year.
Greg Horton, managing director of Nedbank Private Wealth, said: “It is very pleasing to see that the strong progress made in 2012 has continued through into 2013.”