Primera London-based payments startup, has announced a €86.2 million Series C funding round to expand its AI-enabled financial and payments platform. The capital will also support its market development in the US, where the company plans to grow revenue to more than a third of total revenue by 2028, supported by plans to hire up to 50 roles in the region.
Primer is a financial technology company that provides a unified payments infrastructure, allowing businesses to streamline and control every step of the payment process.
The platform offers complete visibility and control across the entire payment operations systemintegrating payment orchestration, reconciliation, security, foreign exchange and financial operations services into a single open layer.
The company was created to solve a persistent problem: businesses have to rely on multiple, fragmented vendors and tools throughout the payment process. Currently, the platform covers the entire merchant payments lifecycle, recording more than 400 data points per transaction and handling more than 95% of customer payment volume on average.
The investment round was led by Sofina and Peak XV Partners, and backed by existing investors including Balderton, Accel, ICONIQ, Tencent and Speedinvest. With this new investment, the company has raised a total of 146.6 million euros, with the adoption of the platform in more than 30 countries.
Primer was founded in 2020 by Gabriel Let Roux (formerly of Braintree) and Paul Anthony (formerly of PayPal), and was initially backed by Balderton and Accel in pre-seed and Series A rounds. Since then, it has raised multiple rounds of investment and launched new products such as Fallbacks and Network Tokenization.
In 2025, Primer launched its own proprietary agent, AI Companion, alongside Global Accounts, enabling companies to optimize and control finances across their businesses.
With the introduction of their AI agent, they aim to solve a new problem created specifically by the rise of AI: the fragmentation of data across multiple systems, which can ultimately lead to high vulnerability and potentially flawed widespread decisions.
“In the coming years, every payment decision in a large enterprise will be initiated, optimized or audited by AI. That change is already underway. The question is whether the data those systems run on is complete, because when agents are deployed on fragmented data, they not only underperform, they make the wrong decision.
That’s why the next era of payments can only be built on complete contextual intelligence. And that is what Primer offers,” said Gabriel Le Roux, CEO and co-founder of Primer.
The company reports that it processes billions of transactions annually for enterprise customers such as Get your guide, Dialpad, Printful, Conforama, Printify, Jackpot.comand Maisons du Monde, among others.
This new injection of capital will support the expansion of Primer’s AI-native infrastructure, which they hope will become the next-generation foundation on which payments and finance teams will operate.
The plan is to expand its capabilities to run experiments, optimize performance, and operate autonomously to support AI-powered contextual decision making.
“We don’t want merchants to chase problems or miss opportunities. With full context on every payment, Primer Companion can act on their behalf, knowing what’s happening, why, and what to do next.” Le Roux added.
Aakash Kapoor, director of Peak XV, stated: “As payments enter a new architectural era, that depth of context becomes critical for AI agents to make decisions.”
The United States represents a huge growth opportunity for the startup, accounting for approximately one-fifth of Primer’s revenue, with annual recurring revenue (ARR) in the region doubling year-over-year.
