We have just released the Wallester Corporate Spending Outlook 2026, based on an analysis of 4.6 million anonymised transactions across the UK and EEA. While 80% of SMEs are entering the year with a growth-oriented mindset, our findings reveal a sign…
This article explores how fintech developers use simulated environments to validate card-issuing logic. It details end-to-end test plans, error handling, and specific transition steps for moving from synthetic data to live production settings. Card-i…
This article explains what virtual card acceptance means in a B2B context, why vendors resist it, how finance teams can persuade suppliers to enrol, and what the process looks like in practice. Many finance teams want to switch to virtual card paymen…
When we asked companies across the EEA and UK what they planned to increase spending on in 2026, what came out on top was business travel. More precisely, forty percent of respondents said they are planning to invest more in it. But then we asked the…
This guide outlines the transition from legacy payment systems to API-driven virtual card issuance, focusing on technical implementation, spend controls, and compliance for UK and European businesses. Building a corporate virtual card programme gives…
There is a moment when a new category of spend stops being something companies experiment with. One way to recognise that moment is to take a look at the balance sheet and flag what has started regularly appearing on it over, let’s say, a yearly peri…
Written by Karine Martinez, Head of Strategic Partnerships at Wallester Corporate finance teams spend their days inside ERP and accounting platforms, because that is where so many workflows live. There are budgets, approvals, reconciliation, reportin…
New data from the Global Payments Report 2026 puts hard numbers behind a shift most people in payments have been sensing for a while, and that’s the steady rise of digital wallets. Yes, cards are still holding their ground. For example, in 2025, 49%…
This article explores how digital marketplaces utilise internal wallets to remove banking delays, lower overheads, and secure seller loyalty through instant payout cycles. We examine the mechanics of ledger-based accounting and why modern platforms a…
This article explains how single-use and multi-use virtual cards work, where each type fits best, and what to look for when choosing between the two for personal or business spending. Virtual cards have become a standard feature for anyone who pays o…
Every year, companies publish strategy documents and presentation decks about operational efficiency, cost discipline, doing more with less, and so on. Then they actually spend the money, and the two things do not always match. We analysed corporate…
This article covers how Apple Pay and Google Pay work under the hood, what digital wallet APIs require from developers and businesses, how virtual cards fit into the mobile payment picture, and what to weigh up before integrating either solution. Pay…
This Hub brings together all content related to virtual cards and the underlying payment technologies that support them. It serves as a central entry point for product teams, architects, and decision-makers looking to understand how virtual card prog…
This guide breaks down the mechanics of commercial card processing fees and explains how companies can transform vendor payments into a profitable income stream. You will learn the exact calculation methods, the core pricing models, and the data requ…
This article walks through how authorisation requests move through the virtual card payment chain, from the moment a transaction is triggered to the response code that approves or declines it. It covers the roles of acquirers, card networks, and issu…
Written by Edouard Roca, Head of Business Development at Wallester. Last month, JP Morgan published its five payments trends to watch in 2026. Embedded finance made the list, alongside AI agents, blockchain, and real-time treasury. When one of the wo…
This article covers how embedded payment solutions work within booking platforms, why they differ from standard payment gateways, and what technical and regulatory factors platform teams need to weigh when choosing an infrastructure provider. Booking…
This article explores how businesses integrate custom-built financial services into their platforms across various sectors. Readers will learn about the move from standard banking tools to vertical-specific fintech infrastructure that improves operat…
