Stablecoins Challenge Naira Control More Than Exchange Rate

By Johnson Emmanuel

The Governor of the Central Bank of Nigeria (CBN), Mr. Olayemi Cardoso, warned that rising adoption of stablecoins and private digital payment platforms could increase foreign exchange volatility and weaken monetary policy effectiveness in emerging economies.

Speaking recently at the G-24 Technical Group Meeting in Abuja, he stated: “The expansion of private digital payment platforms and stablecoins raises concerns about currency substitution and weakened monetary transmission, increased FX volatility and capital flow pressures.”

He further cautioned: “Without coordination, digital cross-border payments risk becoming fragmented across jurisdictions… undermining the ability of Emerging Market and Developing Economies to safeguard monetary sovereignty.”

At the same time, he acknowledged payment inefficiencies: “Today, cross-border payments remain too slow, too costly, and too fragmented… With global remittance corridors costing over 6.0 percent… millions remain disconnected from global opportunity.”

Nigeria’s reforms have produced rising inflows, with remittances averaging about $600 million monthly and projected to reach $1 billion.

DECISION HIGHLIGHT

The Central Bank is positioning digital currency adoption as a monetary sovereignty issue rather than purely a technological innovation issue.

DECISION MEMO

This warning reflects a deeper central banking dilemma. Digital finance solves efficiency problems faster than monetary systems can adapt.

Stablecoins function as synthetic foreign currency accounts. They allow households and firms to hold dollar-equivalent value outside the banking system while still operating domestically. In practice, this bypasses exchange rate policy rather than confronting it.

For a country managing currency stability, the risk is not just capital flight but policy irrelevance. Monetary policy works through banks, interest rates and regulated liquidity. Stablecoins operate through networks, wallets and global settlement layers. The more economic activity migrates there, the less domestic policy tools influence behaviour.

Cardoso’s concern about ‘currency substitution’ captures this transition. Instead of dollar cash replacing naira, digital dollar equivalents embedded in payment platforms begin to dominate transactions.

The paradox is that the same technology also fixes long-standing inefficiencies. Remittances costing above six percent and taking days to settle discourage formal flows. Digital rails reduce that friction and increase inflows, which explains the rise toward $600 million monthly remittances.

Thus, the central bank faces a trade-off, encourage efficiency and risk sovereignty erosion, or restrict digital rails and preserve control but retain inefficiency.

Nigeria’s response suggests a third path. The National Payment Stack, non-resident accounts and cross-border frameworks indicate the regulator intends to compete with private digital money rather than prohibit it.

The strategic objective becomes integration. If regulated systems become equally fast and cheap, stablecoins become less necessary as transactional substitutes.

Cardoso’s concluding statement, “To shape the future of global finance, rather than be shaped by it,” frames the policy direction. The central bank is moving from defensive regulation to infrastructural competition.

The implication is clear. Monetary authority in the digital era depends less on prohibition and more on providing a credible alternative network.

DATA BOX

Remittance cost globally: over 6%
Average monthly remittance inflow: ~$600m
Target inflow: $1bn monthly

Key reforms:
• National Payment Stack (ISO 20022 real-time system)
• Non-Resident Nigerian Ordinary Account
• Non-Resident Nigerian Investment Account
• Non-Resident BVN digital onboarding

WHO WINS / WHO LOSES

Winners:
Diaspora remittance users benefiting from lower transaction friction
Fintech operators integrated into regulated payment infrastructure
MSMEs accessing cross-border payment channels

Losers:
Traditional foreign exchange intermediaries dependent on settlement delays
Monetary authorities if substitution accelerates beyond regulation
Banks slow to adapt to digital rails

POLICY SIGNALS

Central banking is shifting from currency management to payment architecture management.
Regulation will prioritise interoperability and oversight over outright restriction.
Digital infrastructure will become a core monetary policy instrument.

INVESTOR SIGNAL

Countries with modern payment rails reduce transaction friction and attract capital inflows.
However, rapid digital dollarisation raises exchange-rate policy uncertainty.

RISK RADAR

Currency substitution risk from widespread stablecoin usage
Regulatory arbitrage across digital platforms
Capital flow volatility during stress periods
Policy transmission weakening if transactions bypass banking channels

The challenge is no longer whether digital money exists.
It is whether the sovereign system remains relevant when it does.