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XOF vs XAF: same peg, different corridor.
Both currencies are CFA francs. Both are pegged to the euro at 655.957. Both convert 1:1 with each other. This monetary similarity produces a persistent analytical error: treating the two franc zones as one corridor. At the central-bank liquidity layer, they are not — and a unified same-day cost model systematically underprices the thinner zone on stressed auction weeks.
| XOF · BCEAO (WAEMU) | XAF · BEAC (CEMAC) | |
|---|---|---|
| Currency zone | WAEMU — 8 West African countries, currency issued by BCEAO | CEMAC — 6 Central African countries, currency issued by BEAC |
| Peg | 655.957 to the euro; convertible 1:1 with XAF | 655.957 to the euro; convertible 1:1 with XOF |
| Liquidity environment | Deeper and more stable: larger aggregate demand across eight members, established auction participation, direct intra-zone settlement through BCEAO's regional RTGS | Structurally thinner: smaller aggregate economy, lower auction volumes, material week-to-week volatility at the auction level |
| Policy-rate corridor | BCEAO auction dynamics — historically steadier week to week | BEAC TIAO rate 4.75%; marginal lending facility 6.25% — a 150bps penalty for missing the weekly auction window |
| Off-ramp behaviour under stress | Conversion cost holds closer to benchmark on stressed weeks | On undersubscribed auction weeks, funding shifts to the marginal facility: conversion is 150bps more expensive and same-day delivery depends on the ADB's ability to source XAF |
| What to do | Price XOF on BCEAO conditions | Price XAF separately, track BEAC's weekly auction results as a leading indicator, and build the auction calendar into settlement SLAs |
The upstream rail — correspondent banking or stablecoin — does not change this. New rails compress the settlement window to the corridor edge; the local fiat conversion at the off-ramp still runs on the central bank's auction calendar. The settlement architecture gap in the franc zone is a liquidity-depth gap, not a connectivity gap.