On 25 June, 2026, Lean Technologies and Ziina rolled out what they call the UAE's first One-Tap Pay by Bank experience under the Open Finance framework. The headline detail is also the operational one: Ziina users can securely connect their bank account once, then make future wallet top-ups with a single tap, without re-entering credentials and without being redirected to a bank portal.

Lean framed the move as proof that Pay by Bank has progressed beyond “single instant payments.” Until now, the experience was limited to one-time transfers. By working with Ziina, Lean says the underlying infrastructure can support recurring, low-effort payment journeys, which is exactly what typically separates a payments feature from a real usage driver.

So what does “Open Finance” change here, practically? In a traditional model, a user starts a funding flow, gets routed into a bank or re-authenticates, and the friction adds up across every top-up. This launch targets the most common action within Ziina, wallet funding, by compressing the flow into “connect once, then tap.” Lean built the capability on its Deposits solution, positioning it as the infrastructure layer that connects consumer payment experiences to account-to-account plumbing.

This matters because Pay by Bank, in most markets, lives and dies on repetition. One-off transactions can demonstrate technical feasibility. Recurring transactions demonstrate something harder: that users will trust the method often enough for it to become default behavior. Lean’s own framing points directly at that shift. With the underlying infrastructure in place and regulation live in the UAE, the market’s focus, according to the release, is now on building those recurring, low-friction experiences that make account-to-account payments part of everyday usage.

The “default way to pay” language is not just marketing copy. The announcement was made at Pay by Bank: The Default Way to Pay, Lean’s flagship industry event. That conference brought together more than 150 leaders across banking, fintech, commerce, and regulation to discuss the future of account-to-account payments in the UAE and wider region. In other words, Lean and Ziina are not treating this as an isolated product launch. They are positioning it as a reference implementation for how the ecosystem could move from occasional utility to habitual use.

There is also a clear product strategy behind the engineering decisions described. Ziina’s co-founder and head of engineering, Talal Toukan, said that people expect financial products to be as simple and intuitive as the consumer technology they use every day. Within that logic, funding a wallet is not a fringe workflow. It is a core routine, so reducing friction is presented as a “natural next step” and a direct lever for making money movement feel more effortless.

Lean’s VP of Sales, Omar Hamada, added a complementary take focused on capability, not just customer experience. He said Pay by Bank has been live in the UAE for some time, but until now it was only available as single instant payments. The significance of the Ziina partnership, in his view, is that they have shown the infrastructure can support recurring, low-effort payment experiences. That is a subtle but important distinction for decision-makers: it suggests the question is no longer “Can we do Pay by Bank?” It is “Can we do Pay by Bank in a way that earns repeat use?”

For executives, boards, and investors watching the UAE’s payments evolution, the second-order implication is straightforward: partnerships between account-to-account infrastructure providers and consumer-facing fintechs become the fastest route to adoption once regulation is “live.” This launch also signals that the winners may be less about who can connect accounts once, and more about who can turn that connection into a default funding motion that reduces taps, steps, and user drop-off over time. In a market where regulation sets the permission structure, product design determines the conversion structure. Lean and Ziina are betting those conversion wins come from One-Tap recurring workflows.