Derived estimate — not a bank fact. Derived estimate - not a published figure. San Marino uses the euro under a monetary agreement with the EU and has no national RTGS of its own; euro settlement runs through the Eurosystem's T2, which publishes no San Marino-specific figure. Estimated from the real RTGS throughput of comparable sourced countries: the advanced peer group (Germany, France, the Nordics and Czechia) settles a median of about US$1,540,000 per capita per year; applied to San Marino's population and converted at € ~0.92/US$. This puts San Marino on the same wholesale-RTGS scale as the sourced tiles. A modelled input, not a recorded total.