Moody's Investors Service changed South Africa's outlook to positive from stable.
The agency affirmed the nation's long-term issuer ratings at Ba2.
Strengthening fiscal performance and structural reforms drove the improved outlook.
Moody's expects a rising primary surplus to stabilize the government's debt burden.
Improving debt-service costs will also support this stabilization.
South Africa is now the sole G20 nation with a positive outlook from Moody's.
This action could boost investor confidence, attract capital, and lower borrowing costs.
Continued fiscal improvement may establish a downward debt trajectory.