Back to BlogFlatpay & Shift4: Powering Simplicity and Scale Across European Payments
In a European payments landscape often burdened by complexity, Flatpay entered with a mission as bold as it is timely: make payment acceptance simple, scalable, and transparent for merchants across the continent.
From its earliest days, Flatpay set out to challenge the norm — not with off-the-shelf platforms, but with a fresh product vision, a flat-fee pricing model tailored for small businesses, and trusted technology partners to bring it all to life. One of those foundational partners? Shift4.
Building from Scratch with the Right Foundation
“When we started, we didn’t have any product at all—no hardware, no software, no gateway. We basically started from scratch. Finding a partner like Shift4 was amazing. They helped us build in every direction we needed.” Sander Janca-Jensen, CEO & Founder, Flatpay
For PSPs and fintech innovators in the Nordics and beyond, Flatpay’s journey is a blueprint for scaling smart. Without pre-existing infrastructure, they needed a partner that could do more than process transactions, they needed a growth enabler.
Shift4 delivered: scalable acquiring, lightning-fast onboarding via API, real-time settlements, and the flexibility to tailor offerings to Flatpay’s merchant-first model.
Localised Growth at Global Speed
With Shift4’s support, Flatpay launched in Denmark and quickly expanded into Finland, Germany, Italy, France, and other European markets. This wasn’t just about speed—it was about launching with purpose.
Flatpay leveraged Shift4’s infrastructure to create:
- A streamlined onboarding experience designed for European merchants
- Responsive local support teams
- Pricing models that align with Flatpay’s flat-rate simplicity
For merchants, this translated into less friction, more clarity, and a payments partner they could actually understand and trust.
“Working with Flatpay has been a true pleasure. Their clarity of vision and collaborative spirit make scaling together not only possible, but genuinely exciting.” Tara Rasmussen, Key Account Manager, Shift4
A Partnership Built for the Future
At its core, the Flatpay–Shift4 relationship is built on shared values: simplicity, transparency, and a relentless focus on merchant success.
What began as a technical integration quickly evolved into a strategic alliance — one that empowers both parties to adapt quickly, scale confidently, and bring fresh value to European merchants.
And this is only the beginning. With new markets on the horizon and more services in the pipeline, Flatpay is poised for continued growth. And Shift4 remains a vital partner in supporting that journey.
Why It Matters for PSPs & European Merchants
Whether you're a PSP, fintech, or merchant navigating fragmented payment systems, Flatpay’s story is proof:
- You can simplify complexity
- You can scale with confidence
- You just need the right partner behind you
With Shift4, that partner is already here.