Causa Prima Raises $20M Funding to Let AI Agents Settle B2B Invoice Disputes

Causa Prima, the Madrid and Munich-based fintech startup connecting buyer and supplier AI agents to resolve billing disputes, has raised $20 million in seed funding led by Base10 Partners, with new participation from QED Investors and FJ Labs, and existing backers Creandum, Kfund, and Borusan Ventures. The round closed just under four months after the company’s $10 million pre-seed, bringing total funding to $30 million.

The funding comes as Causa Prima’s agent-to-agent network surpasses 3,000 active accounts and begins onboarding enterprise customers that are multibillion-dollar businesses. The company did not disclose its valuation.

Causa Prima Funding Overview By CREDX Media

Startup Name	Causa Prima
Founders	Maex Ament (CEO), Henrik Gebbing, Philip Stanislaus (CTO)
Founded	2026
HQ	Madrid, Spain & Munich, Germany
Round	Seed Funding
Amount Raised	$20M
Valuation	Not disclosed
Category	B2B Payments, AI Agents, Fintech Infrastructure
Lead Investor	Base10 Partners
New Investors	QED Investors, FJ Labs
Returning Investors	Creandum, Kfund, Borusan Ventures
Previous Round	$10M Pre-Seed (June 2026)
Total Funding Raised	$30M
Employees	25
Active Accounts	3,000+
Monetization	Cut of successfully negotiated early payments

💡 Use of Funds

• US Expansion: Opening a New York office to enter the US market .
• Platform Development: Continuing to develop the agent-to-agent network for B2B finance .
• Team Growth: Expanding engineering and product teams across Madrid and Munich .

Startup Overview: Causa Prima

What Causa Prima Is Building in Simple Words

Causa Prima has built a network where AI agents represent both buyers and suppliers in B2B transactions, resolving invoice disputes and negotiating payment terms directly. The company’s thesis is that the biggest inefficiency in corporate finance isn’t inside one company—it’s in the handoff between two .

• Agent-to-Agent Network: AI agents on both sides of a transaction handle invoice disputes, payment timing, and early-payment discounts without human intervention .
• Dispute Resolution in Seconds: A dispute that previously took weeks of email ping-pong can resolve in seconds because there’s no inbox in the middle .
• Dynamic Discounting: The platform negotiates early-payment discounts automatically, making a practice that was previously too complex to scale viable across thousands of suppliers .
• Monetization: Causa Prima earns a cut each time its agents successfully negotiate an early payment .
• Proven Traction: 3,000+ active accounts and onboarding of multibillion-dollar enterprise customers .

Why Causa Prima Matters

1. The Bottleneck Is Between Companies, Not Inside Them Most finance software optimizes one company’s books. Causa Prima’s insight is that the real delays—disputed invoices, missed payment terms, endless email threads—happen when two companies try to agree. No one-sided tool can fix that .
2. The Market Is Enormous and Inefficient B2B payments run to roughly $98 trillion annually, yet nearly half of accounts payable executives cite slow invoice approvals as their biggest challenge, with processing taking more than eight days on average .
3. The Founder Invented the Category He’s Now Scaling CEO Maex Ament founded Taulia, a pioneer in dynamic discounting that moved $50 billion annually across 5 million suppliers before SAP acquired it. Causa Prima is his attempt to solve the same problem he hit at Taulia: the handoff between companies .
4. Investor Conviction Is Unusual Base10 followed its pre-seed investment three months later. The $20 million seed ranks in the top 1% by size among 155 comparable German fintech seed rounds over the trailing 48 months .

Startup Story: From Taulia’s $50B Wall to an Agent-to-Agent Network

Causa Prima didn’t start with a thesis about AI. It started with a wall that Maex Ament had been hitting for 25 years.

Ament began his career at SAP building accounts payable software. He bootstrapped his first startup, automated invoicing software with 600+ clients including Apple and Siemens, and sold it in 2005. Then he raised $250 million to build **Taulia**, where he invented dynamic discounting and moved $50 billion a year across five million suppliers before SAP acquired it .

At every company, the same problem appeared: the moment a payment had to move between two companies, the software stopped and a human picked up the phone. The real problem was never inside one company—it was in the handoff .

In 2026, Ament partnered with Henrik Gebbing, who built Finoa into a €10 billion institutional fintech, and Philip Stanislaus, who led 600+ enterprise security audits at Oak Security and previously ran engineering under Ament at Centrifuge . They founded Causa Prima—Latin for “first cause,” a nod to Ament’s philosophy that the root cause of all business is simply getting paid .

The name also reflects the founding insight: when AI agents operate on both sides of a transaction, the handoff that used to require human intervention disappears .

Our Take on Causa Prima

Causa Prima is solving the least glamorous problem in B2B finance—the handoff between companies—and that’s precisely why it matters.

Every AP automation tool and AR platform optimizes one side of the table. But the delays, disputes, and missed payment terms fall off the edge of every one-sided tool and into someone’s inbox. Causa Prima’s insight is that a network of agents on both sides can resolve what no single-company tool can .

The $20 million seed is justified on multiple fronts: a founder who invented dynamic discounting and built Taulia, investor conviction that followed pre-seed in three months, and a market where even small improvements in payment velocity have outsized liquidity impacts .

The real risk is network adoption. A network of agents only works if both buyers and suppliers join. Causa Prima has 3,000+ accounts, but scaling to thousands of enterprises requires overcoming the chicken-and-egg problem that plagues every two-sided network. Base10’s Rexhi Dollaku framed the bet: “Every dollar going into AP/AR automation today assumes the bottleneck sits inside one company. Causa Prima is building for the handoff between companies” .

For now, Causa Prima has capital, a founder with unmatched domain expertise, and a clear thesis: the next generation of financial infrastructure will be built between companies, not inside them.

Founder Background: The Team That Invented Dynamic Discounting Now Building for the Handoff

Maex Ament (CEO) spent 25 years in accounts payable before founding Causa Prima. He started at SAP, bootstrapped his first startup to 600+ clients, then founded Taulia—where he invented dynamic discounting and moved $50 billion annually across 5 million suppliers before SAP acquired it. He later founded Centrifuge, a tokenized real-world assets platform .

Henrik Gebbing co-founded Finoa, a Berlin-based digital asset custodian, in 2018 after three years at McKinsey. He previously worked with Ament at Centrifuge .

Philip Stanislaus (CTO) led more than 600 enterprise security audits at Oak Security and previously ran engineering under Ament at Centrifuge. His security background is directly relevant to building a network where money moves between companies .

The combination—Ament’s payments infrastructure experience, Gebbing’s fintech operational depth, and Stanislaus’s security expertise—positions Causa Prima to navigate both the technical and trust challenges of B2B financial networks.

The Agentic B2B Payments Race Nobody Expected

Causa Prima operates in a market where most AI finance startups serve one side of the table.

Stuut, a New York startup running order-to-cash for large companies, raised a **$52.5 million Series B** in October 2026 led by Insight Partners. Its total funding is $93 million. But Stuut focuses on collections and cash application for sellers—one side of the transaction .

Traditional AP/AR platforms including Bill.com and AvidXchange optimize internal workflows but don’t bridge the gap between companies.

Causa Prima’s differentiation is that its agents represent both buyer and supplier on a shared network. The company doesn’t just automate one side—it automates the negotiation between them .

The competitive moat, if it materializes, is network effects. Every buyer and supplier that joins makes the network more valuable for everyone else. The 3,000+ active accounts and multibillion-dollar enterprise customers suggest the flywheel is beginning to turn .

Founder Intelligence: What Founders Can Learn from Causa Prima

• Solve the problem you’ve hit repeatedly: Ament hit the same wall at every company he built. Causa Prima is his sixth attempt at the same problem—and the first with the right architecture .
• Follow your pre-seed with a fast seed: The $20 million seed closed just three months after pre-seed. Speed signals traction and creates momentum with enterprise customers .
• Network effects need both sides: Causa Prima’s monetization only works when agents on both sides negotiate. Building the network is the product.
• Name your company after the insight: “Causa Prima” means “first cause.” The name encodes the founder’s philosophy that the root of all business is getting paid .

Investor Intelligence: Why This Round Gets Premium Capital

Base10 Partners led the round. The firm focuses on automating the “real economy” and manages **$2.6 billion in assets** after raising $850 million in new capital across 2025. Its portfolio includes Nubank, Brex, Instacart, and Notion .

Rexhi Dollaku, General Partner at Base10, framed the thesis: “Every dollar going into AP/AR automation today assumes the bottleneck sits inside one company. Causa Prima is building for the handoff between companies. Following the pre-seed into this round three months later reflects both the size of that problem and the pace at which the team is building” .

QED Investors and FJ Labs joined as new investors. QED is a fintech specialist that led AvidXchange’s Series B; FJ Labs focuses on marketplaces and network-effect businesses .

The Road Ahead for Causa Prima

Expansion Targets

With $20 million in capital, Causa Prima will:

• Open a New York office as it enters the US market
• Continue developing its agent-to-agent platform
• Expand its engineering and product teams across Madrid and Munich
• Onboard additional multibillion-dollar enterprise customers

Competitive Response

Expect:

• One-sided AP/AR platforms to attempt to build two-sided networks
• Larger fintech players to acquire or partner with agentic networks
• New startups targeting specific industries or payment corridors
• Causa Prima’s moat: network effects + founder expertise + proven enterprise traction

Conclusion

Causa Prima’s $20 million seed funding validates the thesis that the bottleneck in B2B payments is between companies, not inside them. The company’s agent-to-agent network, 3,000+ active accounts, and founder with unmatched domain expertise position it to capture a market where $98 trillion in annual payments still run on email and manual approvals .

Market tailwinds favor Causa Prima: rising adoption of agentic AI, enterprise demand for faster payment cycles, and the proven appeal of dynamic discounting—a practice Ament invented at Taulia and is now making scalable through AI .

For deep analysis of B2B payments funding, fintech innovation, and companies reshaping corporate finance infrastructure, explore CREDX Media for comprehensive coverage of startup funding trends, valuation intelligence, and founder playbooks.

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Frequently Asked Questions

1. What is Causa Prima’s total funding and latest round size?
Causa Prima has raised $30 million total. Its $20 million seed was led by Base10 Partners in October 2026, following a $10 million pre-seed in June 2026 .

2. How much did Causa Prima raise in its seed round and who led the investment?
Causa Prima raised $20 million in seed funding led by Base10 Partners, with QED Investors and FJ Labs joining as new investors and Creandum, Kfund, and Borusan Ventures returning .

3. What is the valuation of Causa Prima?
Causa Prima did not disclose its post-money valuation. The company has raised $30 million in total funding .

4. Who are the major investors in Causa Prima?
Major investors include Base10 Partners (seed lead), QED Investors, FJ Labs, Creandum, Kfund, and Borusan Ventures. Angel investors include Mario Götze and André Schürrle .

5. Who are Causa Prima’s founders?
Causa Prima was founded in 2026 by Maex Ament (CEO), Henrik Gebbing, and Philip Stanislaus (CTO). Ament founded Taulia and invented dynamic discounting; Gebbing co-founded Finoa .

6. What is Causa Prima’s business model?
Causa Prima earns a cut each time its AI agents successfully negotiate early payments between buyers and suppliers. The company monetizes the economic value created through faster payment cycles .

7. How does Causa Prima’s agent-to-agent network work?
AI agents represent both the buyer’s accounts payable and the supplier’s accounts receivable on a shared network. They handle invoice disputes, negotiate payment terms, and resolve issues without human intervention .

8. What traction justifies Causa Prima’s seed funding?
Causa Prima has 3,000+ active accounts on its network, is onboarding multibillion-dollar enterprise customers, and ranks in the top 1% by size among comparable German fintech seed rounds .

9. What are Causa Prima’s plans for the $20 million seed capital?
Causa Prima will open a New York office to enter the US market, continue developing its agent-to-agent platform, and expand its engineering and product teams .

10. What was Causa Prima’s pre-seed round size?
Causa Prima raised $10 million in a pre-seed round led by Creandum in June 2026, with participation from Kfund and business angels including Mario Götze and André Schürrle .

11. What is dynamic discounting and how does Causa Prima scale it?
Dynamic discounting lets suppliers offer price reductions in exchange for earlier payment. At Taulia, implementing it across thousands of suppliers was too complex. Causa Prima uses AI agents to negotiate these discounts automatically, making the practice scalable .