Solaris goes live on SEPA Instant as EU rules rewire euro payments
Solaris, the Berlin-headquartered licensed German bank that powers embedded finance for fintechs, digital brands and multinationals, has gone live on ACI Worldwide's cloud-native ACI Connetic platform for SEPA Instant payments. The deployment completes the first phase of Solaris' payments modernisation programme and signals a broader structural shift: across the eurozone, instant payments have moved from premium add-on to regulatory obligation, and the banks that move fastest are doing so by making it a platform decision.
The trigger is the EU Instant Payments Regulation. Payment service providers in the eurozone must now receive and send instant credit transfers, price them no higher than a standard transfer, and verify the payee's name against the account before the payer authorises, all around the clock, settled in seconds. That removes any commercial rationale for treating instant payments as a niche product and converts them into everyday, high-volume infrastructure with fraud checks embedded inside the same settlement window.
Platform decisions over patchwork
ACI Connetic consolidates payments processing, fraud prevention, payments intelligence and orchestration into a single cloud-native architecture. For a bank such as Solaris, which runs payments on behalf of an entire partner ecosystem rather than its own retail customer base, the attraction is straightforward: adding capacity or new services without stitching together separate legacy systems. Solaris has indicated it will continue expanding its adoption of the platform as part of a longer-term transformation strategy, supported by majority shareholder SBI Group, which has outlined ambitions to build Solaris into pan-European financial infrastructure.
"Banks across Europe are rebuilding their payments around instant, and the ones moving fastest are making it a platform decision," said Thomas Warsop, president and chief executive of ACI Worldwide.
Solaris chief executive Steffen Jentsch framed the go-live in terms of the company's evolution from a Banking-as-a-Service provider into what it describes as a Financial-Platform-as-a-Service model, one that it says will incorporate AI-driven payment processes at scale.
The convergence angle: embedded finance meets regulatory infrastructure
The Solaris story sits at an important collision point for Disrupts readers. Embedded finance, the practice of non-banks and digital brands integrating accounts, cards, lending and payments directly into their own products, depends entirely on the licensed bank layer operating at the same speed and reliability as the consumer-facing product above it. As SEPA Instant becomes mandatory rather than optional, the licensed bank in the middle of these stacks faces a quiet but consequential infrastructure reckoning.
Capital is following this logic. Payments modernisation has become one of the more defensible enterprise software categories, with vendors such as ACI, Temenos and Finastra competing for long-cycle transformation contracts as European banks respond to the regulatory forcing function. For investors watching the embedded finance space, the infrastructure layer is where margin and stickiness concentrate: a bank that has rebuilt its payments stack around a unified cloud-native platform is harder to displace than one running on patchwork integrations.
The broader implication for cross-sector leaders is that regulatory compliance and competitive infrastructure are increasingly the same decision. The EU's instant-payments mandate is not an isolated payment-sector rule; it is reshaping the economics of embedded finance, the cost structure of Banking-as-a-Service, and ultimately the speed at which digital brands can launch financial products into European markets. Solaris, with SBI Group's backing and a pan-European infrastructure ambition, is positioning itself as a picks-and-shovels play in that build-out. The question for the next phase is whether that ambition scales faster than the regulatory requirements do.