Stuut raises $52.5M: AI agents chase the $16 trillion sitting in unpaid invoices
A New York startup wants AI agents to do the chasing, emailing and portal-clicking that turns an invoice into cash. On October 7, Stuut announced a $52.5 million Series B led by Insight Partners — bringing its total funding to $93 million, just ten months after its Series A.
Stuut announced a $52.5 million Series B on October 7, 2026, led by Insight Partners, with participation from Andreessen Horowitz, Activant and M12, Microsoft's venture fund. The New York company, whose AI agents run the order-to-cash process for large enterprises, says the round brings its total funding to $93 million — ten months after its Series A.
An unpaid invoice usually starts with something mundane: a missing purchase order, bad order data, an invoice sent to the wrong person. What follows is weeks of emails, portal submissions and internal chasing across sales, operations and finance. Stuut's estimate of the prize: $16 trillion in receivables locked up worldwide, with American businesses alone owed $7.48 trillion in trade receivables at the end of the first quarter of 2026, per the Federal Reserve. The company claims broken order-to-cash processes can cost a company as much as 5% of its revenue — close to $1 trillion a year across the Fortune 500.
What the agents actually do
Stuut started in collections and has expanded across the full order-to-cash lifecycle: order management, credit, collections, cash application, payments, disputes and deductions. The agents reach customers by email, SMS and phone, log into accounts-payable portals, investigate payment issues and keep context from earlier interactions — every action stays auditable inside existing approval and control processes. The company says 81.7% of outbound collections activity runs without human involvement, and 95% of incoming payments are matched automatically.
The traction story
More than 150 customers — including Fortune 50 and Fortune 500 businesses — now use the platform, and over $3 billion has moved through it. Customers report freeing up to 40% more cash flow and cutting days sales outstanding by 47% — company-reported figures, with no methodology or customer sample disclosed. One named customer, Bishop Lifting, deployed Stuut across 45 branches, cut overdue receivables by 35% and unlocked $3 million in working capital.
Why the money is back so fast
Andreessen Horowitz led the Series A and returned for the B — a ten-month gap between rounds suggests investors saw adoption accelerate. The broader pitch is a shift in finance software: from tools that flag problems to agents that resolve them — collecting, reconciling and chasing payment on their own, inside the systems finance teams already use.
The pain is structural. An overdue invoice is often the downstream symptom of something that went wrong upstream — a mismatch between what was ordered, shipped and billed. By the time collections gets involved, employees have to reconstruct the whole transaction before they can address the payment. Stuut's bet: agents can follow a transaction across all of it, instead of organizing the chaos for humans to resolve.
Sources: Stuut announcement via GlobeNewswire (Oct. 7, 2026); Unite.AI; Pulse2; Superpower Daily; VentureBurn.