The Green Sheet Online Edition
July 27, 2026 • 26:07:02
Hidden costs of slow payment testing
The mindset around payment testing remained unchanged for years: it was seen as a necessary evil, part of the background fabric of financial services transformation programs that consumed time, resources and budget with little recognition. When payment processes were relatively manual and release cycles were measured in months, not weeks, inefficient, costly testing practices could be tolerated. Not anymore.
Payment ecosystems don't sleep. Customer needs don't sleep. Every transaction has real-time consequences, processed across APIs, cloud environments, payment rails and third-party providers. Financial institutions must keep the lights on while delivering flawless customer experiences and meeting stringent demands from regulators.
In this new era, accountability for mistakes is financial as well as operational. But a shockingly high number of organizations still use outdated payment testing practices and tools that were developed for a world that moved slower, with fewer regulations and less financial pressure. In today's world the cost of slow testing can be catastrophic.
Modern, progressive financial providers prioritize speed. Testing too slowly creates costly bottlenecks that impact the business and its customers as a whole. Late discovery means higher remediation costs; missed release deadlines create delayed programs and wasted expenditure.
Poor testing doesn't just mean poor outcomes—delayed releases, disruptive migrations, operational vulnerabilities. It costs money. A lot of money. Particularly as testing touches every area of the business:
Delayed payment testing is expensive
Delayed payment testing increases operational expenses in several ways:
- Lengthy testing cycles increase the cost of launching new products and prolongs transformation delivery schedules.
- Defects identified late in the game are exponentially more expensive to remediate.
- Unexpected delays require additional expenditure to keep programs on track.
- Repetitive manual testing eats up limited resource budgets.
- Lack of transparency creates reactive responses instead of proactive initiatives.
- Slow testing prevents businesses from keeping up with emerging customer, regulatory and market demands.
The hidden cost of legacy testing practices
Most current payment testing models were built for a different era, when systems were typically homogenous, and release cycles tended to be longer. Testing was often siloed and delayed until late in the delivery process.
By the time issues were identified, programs were nearing Go-Live with little time or budget for remediation. This created huge cost pressure at the end of every delivery cycle as teams rushed to meet deadlines.
Slow testing's impact is felt across the business. Modern payment ecosystems are more dynamic, more complex and more fragile than ever before. Maintaining multiple instant payment schemes, integrated digital wallets, legacy and cloud-native services, open banking connections and third-party interfaces with zero service disruption requires absolute precision.
Today, a defect in any one area can cause failure across an entire ecosystem. Finance teams are understandably anxious about the cost of downtime.
Modern testing improves cost control
Payment testing doesn't need to be a cost center. Quite the opposite. By embedding continuous testing into the payment delivery lifecycle, financial institutions can detect defects earlier to minimize the cost and operational impact.
Modern testing also allows banking teams to automate repetitive tasks to improve accuracy and conserve limited resources. And by extending testing capabilities beyond functional activity, teams can gain a clearer view of transaction performance, real-time compliance risk and operational exposure.
Payment teams that adopt a modern, progressive testing approach can benefit from:
- Controlling the cost of repetitive manual testing
- Catching defects early to reduce cost of remediation
- Minimizing delays and additional costs during migration and transformation programs
- Reducing the impact of failed transactions on day-to-day operations
- Improving visibility of transaction performance and compliance risk
- Validating high volume transaction environments without disruption to live systems
- Accelerate ISO 20022 readiness with more efficient testing cycles
Reducing test-infrastructure costs is just the start
Banks and payment providers need testing that keeps pace with innovation. Migration to ISO 20022, implementation of instant payments, investments in open banking and other new regulatory requirements are placing significant pressure on technology and operations teams.
Testing slowly and manually won't cut it. Forward-thinking businesses recognize the importance of improving testing speed and efficiency to keep up with exponential change. By taking control of payment testing, tech teams can help reduce program costs, limit financial exposure and release resources to focus on what really matters: driving long-term business value. 
Anthony Walton is the CEO of Iliad Solutions, a company that has over 25 years of experience in payments and prides itself on being at the forefront of building, implementing and supporting major payment solutions. This experience has led Iliad to develop trusted, comprehensive and resilient test and certification solutions used for payment testing worldwide. For more information, visit www.iliad-solutions.com. To reach Anthony Walton via LinkedIn, see linkedin.com/in/anthony-walton-80b4779.
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