Finzly powers ACH modernisation at MCB

By Vriti Gothi

Metropolitan Commercial Bank (MCB) has completed the migration of its automated clearing house (ACH) operations from a legacy mainframe to Finzly’s cloud-native, API-first payments platform, becoming one of the first U.S. banks to fully decommission its legacy ACH infrastructure.

The move forms part of MCB’s “Modern Banking in Motion” initiative and reflects a broader industry push to replace aging payments systems with more flexible, scalable alternatives. While a number of financial institutions have introduced modern ACH platforms in parallel with legacy systems, MCB has transitioned to Finzly as its primary ACH processor and fully retired its mainframe environment.

The migration comes at a time when banks are reassessing their core payments infrastructure amid regulatory and operational pressures. With Nacha’s enhanced fraud monitoring requirements set to take effect in March 2026 and growing demand for real-time payment visibility, many institutions are evaluating modernization strategies. A recent American Banker webinar poll indicated that 84% of financial institutions believe the resilience of their current Fedwire and ACH infrastructure warrants reassessment.

Through Finzly’s unified platform, MCB consolidated ACH, wire transfers and real-time payments onto a single system using a modular migration approach. The bank reported achieving near 100% straight-through processing for wires on Finzly’s ISO 20022-native platform. By phasing out legacy systems, MCB said it has streamlined operations, enhanced resilience, and improved the client experience for corporate and commercial customers.

“Finzly has been a strong technology partner for Metropolitan Commercial Bank,” said Mark R. DeFazio, Founder, President, and CEO of MCB. “Their unified payment platform and modular transformation approach allowed us to retire legacy ACH and wire systems safely, launch real-time payments, and deliver a seamless experience to our clients. This migration has strengthened our operational resilience, improved straight-through processing, and positioned MCB to scale efficiently while continuing to innovate. This new platform will enable MCB to expand its payment business, which will meaningfully add to net interest income and lower cost of deposits.”

The development underscores a growing shift among U.S. banks toward cloud-based payments infrastructure as institutions seek to balance regulatory compliance, operational resilience and competitive differentiation in an increasingly real-time payments landscape.