Primer has obtained $100 million in Series C funding to support its expansion in the U.S. and to advance its autonomous AI payment solutions.

      Primer, a payment startup based in London, has announced a €86.2 million Series C funding round aimed at enhancing its AI payments and finance platform. The funds will also aid its market expansion in the US, where the company intends to increase revenue to over one-third of its total by 2028, along with plans to add up to 50 new positions in the area.

      Primer operates as a financial technology firm that offers a cohesive payment infrastructure, allowing businesses to streamline and manage each phase of the payment process.

      The platform provides complete visibility and control of the entire payment operations framework, incorporating payment orchestration, reconciliation, security, foreign exchange, and financial operations services into a singular open layer.

      The company was established to address a long-standing challenge: businesses needing to depend on various disconnected providers and tools throughout the payment journey. Currently, the platform encompasses the full payment lifecycle for merchants, capturing over 400 data points per transaction and managing more than 95% of the average customer payment volume.

      The funding round was spearheaded by Sofina and Peak XV Partners, with support from existing investors such as Balderton, Accel, ICONIQ, Tencent, and Speedinvest. With this latest financing, the total amount raised by the company reaches €146.6 million, and its platform has been adopted in over 30 countries.

      Founded in 2020 by Gabriel Le Roux (formerly of Braintree) and Paul Anthony (formerly of PayPal), Primer was initially supported by Balderton and Accel during its pre-seed and Series A funding stages. Since then, it has attracted multiple investment rounds and launched new products, including Fallbacks and Network Tokenization.

      In 2025, Primer introduced its proprietary agent, AI Companion, along with Global Accounts, enabling businesses to optimize and control their finances.

      The launch of their AI agent targets a new challenge posed by the emergence of AI: data fragmentation across various systems, which can result in significant vulnerabilities and potentially erroneous, widespread decisions.

      “In the coming years, AI will initiate, optimize, or audit every payment decision in large businesses. This transformation is already in motion. The key question is whether the data these systems utilize is comprehensive, as deploying agents on fragmented data leads to not only underperformance but also incorrect decisions.

      This is why the future of payments must be founded on complete, contextual intelligence. That’s the promise of Primer,” remarked Gabriel Le Roux, CEO and co-founder of Primer.

      The company states that it processes billions of transactions each year for enterprise clients, including GetYourGuide, Dialpad, Printful, Conforama, Printify, Jackpot.com, and Maisons du Monde, among others.

      This new influx of capital will bolster the development of Primer’s AI-native infrastructure, which they anticipate will serve as the next-generation foundation for payments and finance teams.

      The strategy is to enhance capabilities for running experiments, optimizing performance, and functioning autonomously to enable contextual, AI-driven decision-making.

      “We aim to prevent merchants from chasing issues or overlooking opportunities. With a complete understanding of each payment, Primer Companion can act on their behalf, comprehending what is happening, why it matters, and what actions to take next,” Le Roux added.

      Aakash Kapoor, principal at Peak XV, noted: “As payments transition into a new architectural era, having that depth of context is essential for AI agents to make sound decisions.”

      The US presents a substantial growth potential for the startup, already constituting approximately one-fifth of Primer’s revenue, with annual recurring revenue (ARR) in the region growing twofold year-on-year.