Thousands of merchants across Canada, including hundreds in Calgary, were left unable to process credit and debit card payments early Tuesday morning following a botched system transition by financial technology giant Fiserv Inc.
The disruption began at approximately 2:30 a.m. MT when Fiserv attempted to migrate payment processing systems to a new platform, affecting businesses from Vancouver to Winnipeg. Calgary merchants reported being unable to accept electronic payments for several hours during the peak morning rush.
"We had customers lined up wanting their morning coffee, and we could only take cash," said Maria Santos, owner of Santos Café in Kensington. "In 2026, hardly anyone carries cash anymore. We probably lost 60 per cent of our usual morning business."
Fiserv, which processes payments for major Canadian banks and thousands of small businesses, acknowledged the technical failure in a statement released at 6:45 a.m. MT. The company cited "unexpected complications during routine system maintenance" as the cause of the widespread outage.
Calgary Chamber of Commerce president David Thompson called the incident "unacceptable" and urged businesses to consider diversifying their payment processing providers. "This highlights the vulnerability of our increasingly cashless economy," Thompson said. "One company's technical failure shouldn't bring commerce to a standstill."
Local business directories like CalgaryFinder.com reported a surge in calls from merchants seeking information about alternative payment processors. Many businesses turned to mobile payment solutions and cash-only operations while awaiting system restoration.
The outage particularly impacted restaurants, retail stores, and service providers during the crucial morning hours. Several Calgary businesses reported customer frustration and lost sales, with some establishments closing temporarily rather than operate on cash-only basis.
Payment processing was gradually restored beginning at 8:15 a.m. MT, with full system functionality returning by 10:30 a.m. Fiserv committed to providing transaction fee credits to affected merchants for the disruption period.
Industry analysts warned that such incidents could accelerate the adoption of decentralized payment systems and blockchain-based transactions. "This is exactly why businesses need backup payment solutions," said financial technology consultant Rebecca Chen.
The Canadian Payments Association announced it would review the incident as part of ongoing discussions about payment system resilience and redundancy requirements for major processors.
Affected Calgary businesses can track their compensation claims and system status updates through their merchant portals, with Fiserv promising full resolution of any transaction discrepancies within 48 hours.