Revised economic data for South Africa could facilitate a quicker upgrade of the country's credit rating, as Investec chief economist Annabel Bishop expects Moody's to raise the rating in the near future.
This revision has led to a decrease in the projected debt-to-GDP ratio—a key metric used by credit rating agencies to assess a country's ability to repay its debt.
Thanks to a re-basing and benchmarking exercise conducted by Statistics South Africa, the measured size of the economy in 2022 increased from 6.67 trillion to 6.99 trillion, representing an increase of about 5%. GDP levels were revised upwards for each year from 2018 to 2023 by an average of 4.2%.
Part of this increase in economic size reflects previously unregistered activities, including illegal mining and online gambling. Furthermore, Statistics South Africa's revised estimates more fully account for activities such as taxi services and electricity generated by farms and households. These changes mean that official figures provide a more complete picture of ongoing economic activity rather than indicating a sudden surge in production.
According to Bishop, the revision raised the value of the South African economy in 2025 by 5.3%.
Not a Sudden Improvement
However, this revision does not mean that households are better off or that the cost of living has decreased. Johann El, senior economist at PSG, notes that the increase in economic size 'does not suddenly make South Africa richer or solve the growth problem.'
According to Statistics South Africa, the largest growth occurred in the mining industry, where the measured value increased by 12.5%, mainly due to the inclusion and improved coverage of illegal mining. Finance, real estate, and business services grew by 9.1% thanks to improved owner-occupied housing valuations.
El argues that the revision improves the ratios used to assess the country's public finances but does not eliminate fundamental economic problems. His revised estimates show that the total debt ratio for the current year is 74.5% compared to the previous estimate of 78.2%. The consolidated budget surplus is estimated at 3.7%, lower than the previous 3.9%.
The revised historical data also shows that economic growth in 2025 was lower than the initial estimate, at 0.9% instead of 1.1%, according to El. Consequently, the larger measured size of the economy does not indicate accelerated economic growth.
Cheaper Loans?
However, the larger measured size of the economy improves the debt-to-economy ratio because government debt is calculated against a broader economic base. This makes the debt burden more manageable in the eyes of credit rating agencies, even if the revision does not mean the government needs less money.
Bishop states that the revised figures reduce South Africa's debt-to-GDP ratio by an average of four percentage points over the medium-term budget period. It is expected that by the 2028/29 fiscal year, this ratio will reach approximately 73% compared to the previous forecast of 77.5%.
It is also expected, according to Bishop, that the budget deficit will fall to 3% of the economy faster than previously forecast. These changes reflect the effect of measuring the economy at a higher level, not an equivalent reduction in the volume of public debt or spending.
Credit rating agencies assess the government's ability to service its debt. Bishop believes that the reduction in the debt ratio should accelerate South Africa's return to investment grade, with an expected Moody's rating upgrade in the near future.
South Africa remains in 'junk' rating status. A return to investment grade would expand the pool of investors willing to hold its government debt and could lower borrowing costs for the state.
Inflationary Barrier
The potential benefit for consumers will depend on whether lower government borrowing costs are passed on to the broader economy. The revised data itself does not change the interest rates that households pay on mortgages, car loans, or other borrowings.
For consumers, inflation and interest rates remain more immediate factors affecting personal finances. Bishop reported that annual consumer price inflation rose to 4.5% in September from 4.4% in August, following a 1.34 per liter rise in gasoline prices and increases in housing and utility costs. Core inflation, excluding food and fuel, stood at 4%.
Bishop forecasts that inflation will approach 5% by the end of 2026, with rising fuel prices contributing to this increase. She does not expect an interest rate hike at the South African Reserve Bank meeting in November, as a reduction in the general fuel excise duty in November and December is expected to provide some relief.


