Some of the most lucrative customers on a bank's books may already be there, unnoticed. New research suggests small-business owners routinely manage their companies through personal banking products, leaving providers blind to relationships that could be worth several times more than an ordinary consumer account.

The core finding is striking: in Europe, small-business relationships can generate between seven and 12 times the revenue of a consumer banking relationship. The catch is that many of these owners stay “hidden” inside consumer segments, spending on personal cards and accounts rather than dedicated business ones.

Europe's hidden small-business value

The numbers come from a 2026 small-business banking study built on responses from more than 5,600 owners and senior managers across 17 markets, plus 73 interviews with banking leaders in five regions.

Across Europe, the revenue multiplier for small-business versus consumer relationships lands between seven and 12 times. The UK shows an 11.3-times opportunity and Germany an 11.6-times one, marking both as especially rich territory for financial institutions. Globally, the average multiplier settles around five times.

The research also flags a consolidation gap. Only 27% of European small-business owners bank with the same primary provider for both business and personal needs — against 72% in North America and 80% in the CEMEA region. Card products loom large in the economics too: they make up 44% of small-business bank revenue globally, and in some European fintech markets that figure reaches 70%. Owners who hold a business card tend to use roughly twice as many banking products as those who don't, with the gap running to 163% more in Germany and 80% more in the UK.

To help institutions size the prize, the study is paired with a value-multiplier calculator meant to estimate what customers still running business activity through consumer products could actually be worth. Richard Campion, Head of SMB for Visa Europe, argues that at a moment when European institutions are all chasing growth, one of the richest openings is closer than they realise — owners hiding in plain sight within consumer segments, who could be served far earlier through dedicated business solutions.

Cards as a relationship gateway

The report casts business and commercial cards as an entry point, not a finished product.

A dedicated card lets a small business separate work and personal spending, gain clearer visibility over outgoings and manage employee expenses. But the bigger prize for banks lies in wiring that card into adjacent services — lending, deposits, cash-flow management, payment acceptance and expense controls. The study urges institutions to use data and segmentation to surface hidden owners, distinguish business from personal spend, issue cards with sensible limits and employee functionality, and link those cards to broader products while coordinating consumer and business teams around the whole relationship.

Campion frames the real challenge as recognition rather than issuance. Many owners, he notes, sit inside consumer portfolios with their business and personal banking scattered across different products or teams, which stops providers from seeing the full picture or offering support that matches how the business runs. Sharper data and segmentation, he says, let institutions spot these customers sooner and serve them with more relevant business products.

Looking beyond the business card

A card should be the start of a wider proposition, the research contends, not the extent of it.

Small firms typically need tools that reflect uneven cash flow, multiple employees, supplier payments and the ability to take customer payments. Campion stresses that the biggest growth comes from tailored strategies rather than a uniform template — institutions need to grasp how a business actually operates and connect support across payments, expense controls, payment acceptance and cash-flow management. That, in turn, demands better segmentation, tighter coordination between consumer and business teams, and services shaped to a company's size, sector and stage of growth.

The biggest small-business growth doesn't come from a single template — it comes from strategies tailored to how each firm actually runs. — Richard Campion, Visa Europe

The through-line is that the opportunity isn't about selling more cards. It's about seeing the business behind the customer — and building a relationship that grows with it.