What it is: modern card processing infrastructure, sold to banks and PSPs
Silverflow sells cloud-native card processing infrastructure to banks and payment providers that need to run card issuing and acquiring workflows without the cost and rigidity of legacy processing stacks. The pitch is operational: one API for processing plus real-time data and analytics, with the goal of reducing integration complexity, speeding product rollouts, and improving visibility into transactions.
The news
Silverflow has closed a USD 40 million (EUR 37 million) Series B funding round, announced on 5 March 2026. The round was led by Picus Capital, with participation from Rabo Investments - Corporate Venturing, and existing investors Crane, Coatue, Inkef and GPT.
The company said the capital will support rapid global growth as it approaches one billion transactions annually and targets USD 100 billion in payment volume.
Why this round fits the current payments infrastructure trend
This financing lands in a with-trend part of fintech: the multi-year push by banks and payment providers to modernise core payment rails and surrounding infrastructure. Silverflow’s CEO Anne Willem De Vries framed the round as validation that the market is moving past legacy systems, a message that is resonating with investors as more regulated players look for lower-friction ways to ship new card products and manage risk.
In practice, card processing has historically been sticky because it sits at the intersection of compliance, uptime, network rules and complex integrations. Cloud-native processors are positioning themselves as a way to decouple innovation from mainframe-era constraints, particularly when institutions want real-time data access for monitoring, customer service and analytics.
What investors are backing
Silverflow’s proposition is not consumer-facing fintech. It is infrastructure that becomes embedded in a customer’s operational workflow. If the platform is deeply integrated into a bank’s issuing or acquiring stack, switching costs can rise quickly, not just due to technical migration but because of certification, operational processes and network compliance.
The investor mix also signals how the category is maturing:
- Picus Capital, a Munich-based deep-tech investor, brings venture scaling experience in software-led infrastructure.
- Rabo Investments, the corporate venturing arm of Rabobank, adds strategic proximity to regulated financial services and potential ecosystem insight.
Traction and go-to-market implications
Silverflow’s growth metrics point to accelerating production usage: the company said it has grown from 180 daily transactions to 1.75 million, and serves clients including Deutsche Bank across Europe, North America and Asia-Pacific.
For a processing platform, that kind of scale matters commercially for two reasons:
- Credibility in regulated sales cycles: reference customers like tier-one banks can shorten diligence and de-risk procurement for other institutions.
- Operational learning loop: higher throughput can harden platform reliability and performance, which becomes a competitive advantage when uptime and exception handling are core buying criteria.
Use of proceeds: clear build-and-expand plan
Silverflow said the Series B will fund:
- Global expansion, including further moves into North America and Southeast Asia.
- Product enhancements, such as support for additional card networks.
- Workforce expansion by over 50%.
Taken together, that points to a classic infrastructure scaling plan: add coverage (geographies and networks), deepen the product surface area, and invest in delivery capacity. For card processing, execution often hinges on implementation depth and local market requirements, so headcount growth is likely to land in engineering, network enablement, compliance, and customer delivery.
Competitive context
Silverflow is competing in a crowded but expanding market for modern payment infrastructure. Incumbent processors still run a large share of card volumes, but their architectures can be slower to change and harder to integrate with modern data stacks. Newer platforms aim to win by offering faster integration, real-time data access, and modular APIs.
The strategic question will be how effectively Silverflow can translate product advantages into repeatable enterprise go-to-market across regions, where bank procurement, regulatory expectations, and network certification timelines vary significantly.
What this enables
- Faster entry into new markets, including North America and Southeast Asia
- Broader card network support, expanding addressable customer requirements
- Increased implementation capacity to handle complex bank deployments
- More resilience and analytics depth as transaction volumes climb
What to watch
- Pace of new bank and PSP wins outside Europe, particularly in North America
- Delivery execution as headcount expands by more than 50%
- Progress on additional card network support and associated certifications
- Whether transaction growth translates into durable, multi-year platform contracts