What the BCEAO actually controls

The West African CFA franc is pegged to the euro at a fixed parity, and has been at the same rate since the euro came into existence. That single fact does more to shape credit risk across the eight-member monetary union than anything else in the region's financial architecture, and it is routinely skipped over as a piece of background detail.

It should not be. A currency board-like arrangement is not a technical footnote to monetary policy. It is a decision about which shock absorbers the economy has, and by extension about where stress goes when it arrives.

The trilemma is not negotiable

The constraint is the familiar one. A country cannot simultaneously run a fixed exchange rate, free capital movement, and an independent monetary policy. It can have two.

The union has chosen the fixed rate. That choice buys real things: price stability that compares favourably with much of the continent, a credible external anchor, no currency risk on euro-denominated obligations. It costs the interest rate as an independent instrument. The central bank sets rates, but it sets them inside a corridor defined by the peg. It cannot cut its way through a domestic downturn if doing so would threaten the parity, and it cannot use the exchange rate to absorb a terms-of-trade shock, which for commodity-exporting members is the shock that actually arrives.

Inflation, correspondingly, is substantially imported. Domestic monetary conditions are a smaller part of the story than they would be under a float.

The consequence nobody prices: XOF exposure is euro exposure

Here is the part that matters most for anyone lending or investing into the region, and it is regularly mishandled.

Because the parity against the euro is fixed and has held for a very long time, exposure denominated in the regional currency carries essentially no currency risk against the euro. Against the dollar, it carries exactly the euro's risk, no more and no less. A dollar-based lender with regional exposure is running a euro/dollar position, whether or not anyone has written that down.

This is either a hedge that already exists or an unhedged position nobody has identified, depending entirely on the institution. Both are common. It is a five-minute conversation that frequently has never happened.

The tail is separate and should be treated separately. The peg has held for decades, through considerable political stress, and there is a convertibility guarantee standing behind it, an arrangement that was substantially reformed in recent years, with the operations-account mechanism and the reserve-deposit requirement ended and French participation in the union's governance withdrawn, while the guarantee itself was retained. A devaluation is a low-probability, high-impact event of exactly the sort that belongs in a reverse stress test rather than in a base case. Model it as a discrete scenario with a stated probability; do not smuggle it into a volatility assumption, where it will disappear.

If the exchange rate cannot absorb the shock, the fiscal accounts have to. That is not a monetary risk. It is a sovereign credit risk.

Where the risk actually goes

Remove the exchange rate as an adjustment channel and the adjustment has to happen somewhere else. In practice it happens through the budget, and it shows up in ways that are visible well before they are acknowledged: arrears to suppliers, delayed public-sector payments, stretched capital budgets, rising domestic issuance.

That last one closes an important loop. Member sovereigns fund themselves substantially on the regional market, and the buyers of that paper are overwhelmingly the region's own banks. So sovereign stress is transmitted directly into bank balance sheets through the securities portfolio: the classic sovereign-bank nexus, in a setting where the banking system is concentrated and the sovereign has no domestic printing press to fall back on.

For anyone assessing a bank in the union, this is the exposure to size first. Not the loan book, and certainly not the currency: the holdings of regional sovereign paper, and which sovereigns.

Where the adjustment goes

Every economy absorbs shocks somewhere. Under a float a good deal of it lands on the exchange rate, which is unpleasant and highly visible and gets attention accordingly. Remove that channel and the shock does not disappear; it relocates.

In this union it lands on the fiscal accounts, and from there into the banking system, because the sovereigns fund themselves on a regional market whose principal buyers are the region's own banks. The sequence runs from a terms-of-trade shock to arrears to bank securities portfolios, and none of the steps announce themselves.

What is striking is how little of this is hidden. The reserve position, the issuance calendar, the arrears, the bank holdings: most of it is published. It is simply not what a country model built for a floating currency looks at first, and the model rarely says which assumption it was built on.