There are capable candidates who could replace her, although choices outside the bank are thin.
The Monetary Policy Committee's says it was mindful of the anaemic state of the economy when deciding to leave rates unchanged.
Gill Marcus said she will step down from her post when her term ends in November, leaving room for one of her deputies to succeed her.
A surprise widening of the current account deficit has been attributed to the high volume of imports and dividend and interest payments.
The Reserve Bank has placed the sinking lender under curatorship in a bid to save investors.
Bonds are rallying after the Reserve Bank's hiked rates in an effort to assure South Africans and investors that inflation will not run away.
Reserve Bank Governor Gill Marcus announced an interest rate hike on Thursday, while highlighting strike action and excessive salaries and bonuses.
Economists are split on whether the South African Reserve Bank's Monetary Policy Committee will hold or hike interest rates on Thursday.
Investors and economists will be eager to hear if the South African Reserve Bank will keep the repo rate on hold at 5.5% on Thursday.
The World Bank has revised South Africa's economic growth forecast from 2.3% to 2% for 2014.
SA's economic slowdown is "domestically driven", says Reserve Bank governor Gill Marcus, adding that the country holds the solutions to the problems.
The prime lending rate remains at 9% in the wake of Reserve Bank governor Gill Marcus's announcement that the repurchase rate will be kept at 5.5%.
Interest rates will remain unchanged, Reserve Bank governor Gill Marcus has announced, adding that the MPC's decision was split.
The rand is down and inflation is up, but has not yet breached the Reserve Bank's upper target range.
The rand has bounced back from a five-year low on expectations that the Reserve Bank will raise the repo rate as inflation grows.
GIll Marcus's surprise announcement that the repo rate will increase to 5.5% is in line with recent actions taken in other emerging economies.
Reserve Bank governor Gill Marcus has announced an increase of 50 basis points in the repurchase rate, due to a weak rand and inflationary risks.
Investors on Wednesday morning awaited Reserve Bank governor Gill Marcus's announcement on the repo rate.
Derivatives used to speculate interest rates tumbled after South African inflation was found to be lower than expected.