€3 per month: when the Lydia – Sumeria migration turns into a reputational cost

By announcing fees of 3 euros per month for inactive Sumeria accounts, Lydia Solutions triggered a bad buzz that it had clearly not anticipated.

Launched in 2013, the peer-to-peer payment application Lydia has been a great success, bringing together up to 8 million users. After unsuccessful diversification, the company decided in 2023 to focus on a banking activity with Lydia Comptes, renamed Sumeria in 2024, offering an interest-bearing current account offer.

If the company split the money transfer service from its banking activity, to maximize user migration, access to Sumeria could be done with the same identifiers and password as Lydia. A continuity of experience which could have led to a misunderstanding as to the difference in status between the two services.

As is customary in many banks, Sumeria has decided to apply an inactivity fee of 3 euros per month to its dormant accounts from March 12. These fees only apply to Sumeria account holders. They still need to be aware of having an active Sumeria account.

This confusion crystallized when users received an email informing them of the application of these fees. Some then called out the brand on social networks, transforming the sequence into real bad buzz and causing excitement among users of Lydia (the money transfer solution) who were nevertheless not concerned.

Beyond the fact that this situation reveals a migration exercise imperfectly controlled by the Sumeria teams, it above all reflects a pivotal moment for French fintechs. The transition from a logic of massive acquisition to a regulated and profitable banking logic cannot be achieved through simple technical continuity. It supposes a clear break in the customer relationship. But here, the continuity of experience has blurred the very nature of the contract.

This shift goes far beyond one actor. After ten years of hypergrowth financed by venture capital, European startups are entering a phase of normalization. Investors demand margins. Regulators impose standards. Compliance costs continue to rise. Structural gratuity is no longer sustainable.

The challenge is universal: how to transform a user base acquired through simplicity and virality into banking customers fully aware of their status? How can we introduce fees, conditions and regulatory constraints without altering the trust accumulated during the expansion phase?

There is a strong temptation to favor fluidity: same identifiers, same interfaces, same routes. But fluidity can mask a change in the nature of the service. However, the nature of the contract is central and cannot remain implicit.

The present case illustrates a structural tension; fintechs have built their success on eliminating friction. Their maturity now requires reintroducing formality, pedagogy, sometimes even distance.

In this new phase, clarity becomes a competitive advantage. Because if growth can be based on enthusiasm, sustainable profitability relies on informed consent, and this applies beyond fintech.