Causa Prima Raises $20M Seed Round Led by Base10 Partners

Causa Prima, an AI-powered B2B payments startup, has raised $20 million in a seed funding round led by Base10 Partners. The round also includes new investors QED Investors and FJ Labs, alongside existing backers Creandum, Kfund and Borusan Ventures.

Founded in 2026, the company operates from Madrid and Munich and is developing AI agents designed to resolve invoice disputes and negotiate payment terms between businesses. The latest funding brings Causa Prima's total capital raised to $30 million, less than four months after its $10 million pre-seed round in June 2026.

The company has not disclosed its valuation.

Causa Prima plans to use the new capital to continue developing its platform and expand into the United States, including establishing an office in New York.

What Does Causa Prima Do?

Causa Prima is building an AI-powered network designed to automate financial interactions between buyers and suppliers.

Traditional finance software generally focuses on activities within an individual company, such as managing accounts payable, accounts receivable and internal accounting records. However, many payment-related problems emerge between businesses rather than within their own systems.

A buyer may dispute an invoice, a supplier may follow up on an overdue payment, and both sides may spend weeks exchanging emails to agree on payment terms. These delays can complicate cash-flow planning and increase the administrative workload for finance teams.

Causa Prima aims to address this problem by deploying AI agents that represent buyers and suppliers on a shared network. The agents are designed to handle invoice disputes, coordinate payment timing and negotiate early-payment discounts.

According to the company, this approach can give finance teams greater visibility into expected cash flow while reducing the time spent chasing payments and resolving disagreements.

Why Invoice Disputes and Late Payments Matter

Late payments remain a challenge for businesses managing working capital and supplier relationships.

The article cites the 2026 Atradius Payment Practices Barometer for North America, which found that late payment affected seven in ten companies surveyed across the United States, Canada and Mexico. Overdue invoices represented an average of 23% of business receivables, although most were settled within a month of the due date.

The survey covered more than 600 businesses in the region.

For companies, delayed payments can make it harder to forecast available cash, manage operating expenses and maintain predictable supplier relationships. Resolving disputes can also require employees to coordinate information across accounting systems, procurement teams and external partners.

Causa Prima's approach focuses on the interactions between these organizations. Instead of automating only the buyer's or supplier's internal processes, it aims to coordinate negotiations across both sides of a transaction.

The underlying idea is that payment terms and invoice disputes could be managed more efficiently when AI agents can communicate and work toward an agreed outcome.

How Causa Prima's AI Agents Work

Causa Prima's platform is designed around AI agents operating on a shared network between businesses.

The agents can help handle invoice disputes, negotiate payment timing and coordinate early-payment discounts. The company believes this can reduce manual follow-ups and help finance teams make better-informed decisions about cash flow.

Early-payment discounts are particularly relevant to this model. A supplier may agree to accept payment earlier in exchange for a discount, while a buyer may benefit from reducing the amount owed. Dynamic discounting allows these arrangements to vary according to payment timing and other commercial considerations.

Causa Prima's founder and CEO, Maex Ament, argues that significant inefficiencies remain in financial processes between companies, even as businesses continue to automate their internal operations.

The company says its network has more than 3,000 active accounts, the same figure reported in June 2026. It is also onboarding enterprise customers described as multibillion-dollar businesses.

The article does not provide a detailed breakdown of transaction volume, the number of completed negotiations or the financial savings achieved by customers.

Meet the Founders of Causa Prima

Causa Prima was founded by Maex Ament, Henrik Gebbing and Philip Stanislaus.

Maex Ament, the company's CEO, began his career as a software engineer at SAP. He later co-founded Taulia in 2009, a company focused on working capital management and supply chain finance. SAP completed its acquisition of a majority stake in Taulia in March 2022.

Ament subsequently co-founded Centrifuge, a platform for tokenized real-world assets.

Henrik Gebbing co-founded Finoa, a Berlin-based digital asset custodian, in 2018 after working at McKinsey.

Philip Stanislaus serves as chief technology officer. Before Causa Prima, he led more than 600 enterprise security audits at Oak Security and worked in engineering under Ament at Centrifuge.

The founders bring experience across enterprise software, financial technology and digital asset infrastructure to the company's efforts to automate financial coordination between businesses.

Causa Prima's Investors and Funding History

Base10 Partners led the $20 million seed round, with QED Investors and FJ Labs joining as new investors. Existing backers Creandum, Kfund and Borusan Ventures also participated.

Base10 Partners focuses on companies using technology to automate processes in the real economy. Its portfolio includes businesses such as Nubank, Brex and Instacart. In June 2026, the firm closed two funds totalling $850 million, bringing its assets under management to $2.6 billion, according to the supplied article.

QED Investors specialises in financial technology, while FJ Labs invests in marketplace and network-effect businesses.

The latest investment follows Causa Prima's $10 million pre-seed round, which was announced in June 2026 and backed by investors including Creandum and Kfund.

The rapid follow-on funding brings the startup's total capital raised to $30 million within its first year of operation. However, the company has not disclosed its valuation.

How Causa Prima Plans to Use the $20 Million

Causa Prima plans to use its new funding to expand into the United States, including opening an office in New York, while continuing to develop its platform.

The company has 25 employees across Madrid and Munich, according to Fortune, as cited in the article.

Its expansion will require the company to grow beyond its existing European presence and establish relationships with additional enterprise customers. Since the platform depends on interactions between buyers and suppliers, adoption on both sides of a business transaction will be important to its model.

A shared network could make it easier to coordinate payment negotiations across organizations. However, convincing multiple businesses to participate in the same network presents a different challenge from selling software to a single finance department.

Causa Prima's ability to expand its network and demonstrate measurable value to enterprise customers will be important to its next stage of growth.

Causa Prima and the Growing AI Finance Market

Causa Prima is entering a market where startups are applying AI agents to accounts payable, accounts receivable, collections and other back-office financial tasks.

The article highlights several companies operating in related areas. Stuut raised $52.5 million in a Series B round led by Insight Partners on October 7, 2026, to expand its AI-powered order-to-cash platform. Paris-based Cleavr raised an €8 million seed round on October 6, 2026, to automate invoice collection. London-based Round raised a $6 million seed round in April 2026 to automate treasury, accounts payable and payroll.

These companies address different parts of the financial workflow. Causa Prima's distinguishing focus is the interaction between two businesses, particularly the negotiation and settlement of invoice disputes and payment terms.

That focus could offer a different approach to finance automation if both buyers and suppliers adopt the network. Instead of merely automating individual tasks within one organization, the platform aims to coordinate decisions across company boundaries.

The challenge will be converting that concept into widespread adoption. Businesses must be willing to participate, trust the system to handle sensitive financial interactions and achieve enough value to justify integrating another platform into their workflows.