The collapse of the world’s third largest crypto exchange FTX, and subsequent plunge in the prices of Bitcoin, Ethereum, and other major crypto assets, is prompting renewed calls for greater consumer protection andregulation of the crypto industry.

Regulating a highly volatile and decentralized system remains a challenge for most governments, requiring a balance between minimizing risk and maximizing innovation. Only one-quarter of countries in sub-Saharan Africa formally regulate crypto. However, as our Chart of the Week shows (see below), two-thirds have implemented some restrictions and six countries—Cameroon, Ethiopia, Lesotho, Sierra Leone, Tanzania, and the Republic of Congo—have banned crypto. Zimbabwe has ordered all banks to stop processing transactions and Liberia directed a local crypto startup to cease operations (implicit bans).

Africa is one of the fastest-growing crypto markets in the world, according to Chainalysis, but remains the smallest, with crypto transactions peaking at $20 billion per month in mid-2021. Kenya, Nigeria, and South Africa have the highest number of users in the region. Many people use crypto assets for commercial payments, but their volatility makes them unsuitable as a store of value.

Policymakers are also worried that cryptocurrencies can be used to transfer funds illegally out of the region and to circumvent local rules to prevent capital outflows. Widespread use of crypto could also undermine the effectiveness of monetary policy, creating risks for financial and macroeconomic stability.

The risks are that much greater if crypto is adopted as legal tender—as the Central African Republic recently did. If crypto assets are held or accepted by the government as means of payment, it could put public finances at risk.

The Central African Republic is the first country in Africa, and the second in the world after El Salvador to designate Bitcoin as a legal tender. The measure has put the country at odds with the Bank of Central African States (BEAC)—the regional central bank that serves the Economic and Monetary Community of Central Africa (CEMAC), which the Central African Republic is a member of—and violates the CEMAC Treaty. BEAC’s banking sector supervisory body—Central Africa’s Banking Commission—has banned the use of crypto for financial transactions in the CEMAC region.