Africa’s Growth Paradox: The High Cost of Bad Data and the Diamond Trap

By Gregory September

Africa has a US$400 billion problem, and it is not quite the one most people describe. The continent’s annual financing gap tops that figure. Yet Africa’s own banks, funds and reserves hold more than US$4 trillion. The money exists. What is missing is a cheap, credible way for African governments to prove they are worth lending to.

Consider the arithmetic of trust. Only 3 of Africa’s 54 countries hold an investment-grade rating. The rest pay more to borrow, and sometimes far more. The African Development Bank’s president argues that much of this premium reflects opacity: when investors cannot see clearly, they assume the worst and charge accordingly. Higher perceived risk means higher borrowing costs, whatever the underlying reality.

That is why the launch of AfCRA, a new African credit rating agency, on October 7 deserves more attention than a routine institutional announcement. The Bank says it will now help governments prepare for ratings, a step that treats the problem as one of preparation and transparency rather than charity. Africa does not only lack capital. It lacks an inexpensive way to demonstrate creditworthiness. Data quality and trust therefore sit at the center of the story.

A Fairness Problem, or a Data Problem?

The common framing of Africa’s borrowing costs is moral: the continent is unfairly punished by Western rating agencies and skittish investors. There is some truth in that. But fairness alone is a poor guide to policy. A grievance does not lower a coupon.

The more useful framing is practical. Borrowing costs are, in large part, a data and credibility problem. Investors price what they can verify. Where national accounts are late, debt figures are murky and institutions are hard to read, risk premiums swell to fill the gaps. Fixing that means better statistics, timelier disclosure and ratings that investors regard as independent.

This is where AfCRA faces its real test. A home-grown agency could add valuable local knowledge, sharpening assessments that distant analysts get wrong. It could also add noise, or worse, the suspicion of flattery. If markets conclude that its ratings are friendlier than the facts, they will discount them, and the exercise will have achieved nothing. Credibility cannot be declared into existence. It has to be earned, rating by rating, with methodology that survives scrutiny.

The stakes extend well beyond finance. Cheaper capital frees public money for jobs and growth, the heart of Sustainable Development Goal 8. Debt service that shrinks lowers the burden that crowds out spending on health, schools and anti-poverty programs, the concern behind Goal 1. And better data, which opens cheaper finance, is the quiet engine of Goal 17, the partnership goal. The links are direct: every percentage point shaved off a borrowing cost is a point available for something else.

Botswana’s Warning

Nothing illustrates what is at stake better than Botswana, which turned 60 this year. Having won independence on September 30, 1966, it found diamonds at Orapa the following year, and for decades it made the most of the gift. The stones paid for schools, roads and a reputation for stability that few resource-rich countries can match.

That model is now under strain. Botswana’s economy shrank 2.8 percent in 2024 and a further 0.7 percent in 2025. Public debt climbed from 22 percent of GDP in 2023 to nearly 40 percent in 2025. For a country long admired for its prudence, that is a sharp change of direction in a short time. It is also precisely the kind of trajectory that makes credit analysts, and bond investors, reach for their red pens.

The deeper problem is structural. Mining is capital-intensive. It generates revenue, but not nearly enough jobs. Youth unemployment stood at 38.2 percent in early 2024, a figure that turns the promise of a diamond economy into a quiet indictment. Where work is scarce for the young, inequality deepens and the social contract frays. That is the concern behind Goal 10, and it is why headline growth matters less than whether growth reaches people.

Beneficiation is not Diversification

Botswana’s response has leaned heavily on processing more diamonds at home. The instinct is sensible. Cutting, polishing and trading stones locally captures more value and creates some employment. But it should not be mistaken for a cure.

Beneficiation is not diversification. Processing diamonds at home deepens a country’s connection to diamonds. If the global market for them softens, as it has, a more vertically integrated diamond industry falls with it. Real resilience requires entirely new industries and the infrastructure to support them, the work of Goal 9. That is harder, slower and less certain than polishing more of what one already digs up. It is also the only route that does not end where the last 60 years began.

One Problem, Two Faces

Seen together, these stories are one. Africa’s lenders charge more because they struggle to verify and, in some cases, because there is genuine fragility to price. Botswana shows how a country can slide from admired to anxious when its economy rests on a single pillar. Better data and credible ratings can lower the price of trust. But they cannot manufacture the thing being measured. Only diversified economies, solid institutions and honest numbers can do that.

Two questions will define the next decade. Will a home-grown rating agency lower Africa’s borrowing costs, or merely add noise? And is processing diamonds at home enough, or must Botswana build entirely new industries? The honest answer to both is the same: credibility is the scarce resource, and it cannot be borrowed.

Gregory September is a South African academic, author, and geopolitical analyst with extensive experience in government and Parliament. He is the founder and CEO of SAUP (Sustainability Awareness and Upliftment Projects NPC), which focuses on sustainability education and community development. He previously served as Head of Research and Development for the Parliament of South Africa. His work centers on sustainability, African geopolitics, and economic development, and he regularly contributes to analysis of global political and economic affairs.