Small and medium enterprises (SMEs) have become a key business priority for many financial institutions. The diversity of existing SME banking models mean that designing a successful proposition for this segment is not as straightforward as it might seem, and only some of the banks entering or expanding their footprint in this segment will truly thrive. We identified Wachovia Bank in the US, as well as Kasikornbank and St George Bank in Asia, as the benchmarks in this category due to their superior relationship management, business architecture and portfolio performance.