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Fiserv is reworking the infrastructure behind modern banking

Fiserv modernizes its core tech stack to streamline how merchants deploy payment and financing solutions at the point of sale.

Curated by Financing Your Way from original reporting by Tearsheet. Summary is AI-assisted and editorially reviewed — see our editorial standards.

FYWBy Financing Your Way EditorialSeptember 21, 2026

Fiserv is aggressively modernizing its core banking infrastructure to simplify how financial products, including consumer credit, are delivered at the point of sale. For retailers and service providers, this signals a shift toward more reliable and faster financing integrations. The company is moving away from fragmented, legacy systems toward a unified 'fintech-ready' stack. This means that the payment terminals and software you use daily will soon be able to handle complex financing applications and instant approvals more seamlessly. The update focuses on reducing the 'tech debt' that often causes glitches or slow processing times during the checkout experience. As Fiserv streamlines its back-end, merchants can expect better interoperability between their merchant accounts and the third-party lending apps they offer to customers. It also suggests that Fiserv is positioning itself to compete more directly with modern platforms like Stripe and Adyen by offering integrated Buy Now, Pay Later (BNPL) and traditional credit products natively within their ecosystem. For operators, this could eventually mean fewer plug-ins and a more stable environment for offering customer credit.

Source: Tearsheet

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