Payments are becoming more powerful, but they are also becoming more fragmented. New payment methods are growing alongside traditional ones, according to recent research from Juniper. The adoption of digital wallets is steadily rising, for example. B…
This guide explains how to execute a card-issuing API integration. We cover the core architecture, essential engineering prerequisites, PCI compliance frameworks, and realistic deployment timelines, helping fintech product managers and developers con…
This article explains what virtual card straight-through processing is, how it works within B2B payment automation, where operational gaps tend to appear, what implementation looks like in practice, and how platforms like Wallester fit into the pictu…
The usage of corporate cards is becoming more common, but not as common as some people might think. According to new data from Juniper Research, there will be 66 million corporate payment cards in use globally by 2030, up from 55 million in 2026. Tha…
This article covers HMRC’s rules on subsistence expenses, the per diem allowance UK framework, benchmark scale rates, temporary workplace definitions, common compliance errors, and practical approaches to managing employee travel costs. If you&…
This article explores how businesses use virtual cards to govern software-as-a-service (SaaS) expenses. It covers the limitations of traditional payment methods, the mechanics of card-level budget controls, and practical ways to eliminate duplicate s…
This article explains what a corporate card policy should contain, who it applies to, how spending controls work, and what businesses should include in a working template. It covers the legal and operational necessity of these documents for maintaini…
Wallester and Spendesk both promise the same end result: finance teams in control, cards in every employee’s pocket, expenses sorted without spreadsheets. The marketing pages look similar. The feature lists overlap in obvious places. Yet anyone…
This guide covers what T&E expenses are, why businesses lose visibility over travel spend, how to structure an expense policy, which controls prevent misuse, and how business travel cards compare to traditional reimbursement methods. It also cove…
Instant payments are moving from a regulatory requirement to everyday financial infrastructure. In short, the question is no longer whether SEPA Instant is coming. It is already here. What matters now is how it actually changes the way businesses mov…
This article covers how corporate spending limits work in practice, what card-level controls finance teams can apply, and why pre-approved spend logic does more to prevent policy breaches than written policies alone. It also explains how virtual card…
Written by Karine Martinez, Head of Strategic Partnerships at Wallester In the world of corporate payments, cards are often reduced to little more than a commodity. But Karine Martinez, Head of Strategic Partnerships at Wallester, makes a compelling…
This guide provides a technical framework for deploying a virtual card ecosystem within the UK and European regulatory framework. It covers the transition from legacy banking to API-first issuing while addressing specific fraud mitigation strategies…
This guide explains how to integrate virtual payment tools into a company’s daily operations. It covers the setup of spend permissions, the creation of clear internal rules, and methods for tracking transactions in real time. Readers will find…
This guide explores the mechanics of modern corporate card programmes, focusing on spend visibility, risk mitigation, and finance team workflows. It provides a detailed framework for CFOs to move from manual expense management to automated, card-led…
What our CRM team hears week after week is rarely just a question of whether Wallester Business can do something. The questions are usually more practical: how to use the platform properly, what to put on cards, how many cards to issue, and how to or…
Introduction E-commerce in 2026 looks nothing like it did even five years ago. Your business probably runs across at least three currencies, sources from suppliers in two or three countries, runs paid ads on four platforms, manages subscriptions to t…
Not all SMEs are managing for the same outcome. Some are still building for growth and others are already defending margin. That divide runs clearly through Wallester’s Corporate Spending Outlook 2026, which surveyed SMEs on their priorities and chal…
