- Stuut raised a $52.5M Series B led by Insight Partners, with Andreessen Horowitz and M12.
- The round comes 10 months after a $29.5M Series A and lifts total funding to $93M, it says.
- Stuut says customers cut days sales outstanding by 47%, a self-reported figure.
Stuut has raised $52.5 million in Series B funding to helpq enterprises unlock cash trapped in slow and inefficient order-to-cash processes. The round was led by Insight Partners, with participation from Andreessen Horowitz and M12, Microsoft’s venture fund. It was closed in just 24 hours, bringing Stuut’s total funding to $93 million only 10 months after its Series A.
A missing purchase order looks like a clerical slip. At a large company, it can set off a rejected invoice, a portal submission, and then a short payment or deduction, with finance staff tracing each step by hand.
New York-based Stuut builds AI agents that follow that chain instead, and the startup has raised $52.5 million in Series B funding to put them in front of more enterprises.
Insight Partners led the round, with participation from Andreessen Horowitz and M12, Microsoft’s venture fund. It comes 10 months after Stuut’s $29.5 million Series A, led by Andreessen Horowitz in November 2025, and is about 1.8 times that round’s size.
“Most businesses don’t have the bandwidth to segment their base or give customers the level of service they deserve. By leveraging AI, we’re able to deliver the only solution with continuous learning loops to improve the customer experience, reduce churn, improve NPS, and deliver better financial performance,” said Tarek Alaruri, Stuut’s CEO.
The pitch rests on a large number. Stuut says businesses worldwide have $16 trillion locked up in unpaid receivables, and that finance teams are thinning out as the work grows: it says more than 300,000 accountants have left the profession since 2019. A neighbouring market is already big.
The Business Research Company estimates that accounts receivable financing, which means lending against unpaid invoices rather than collecting them, was worth $164.06 billion in 2025, will reach $182.63 billion in 2026, and will hit $277.68 billion by 2030.
How Stuut’s agents get invoices paid
The startup, founded in 2024, works by joining order management, credit, collections, cash application, payments, disputes, and deductions into one workflow.
Its agents contact customers by SMS, email, and phone, log in to customers’ accounts payable portals, reconcile incoming cash, and decide the next step while keeping the context of earlier conversations. Stuut says 81.7% of its outbound collections activity now runs without human involvement, and 95% of incoming payments are matched automatically.
Alaruri co-founded and was chief operating officer of procurement software company Fairmarkit before starting Stuut with Ben Winter and Miraj Mohsin.
Stuut says it plugs into enterprise resource planning systems, the software large companies use to run their finance, as well as bank accounts, customer relationship management tools, and payment systems, and goes live in days. Every action is auditable, any change in behaviour needs approval, and finance teams can ask the platform what it did and why.
The company is open about the lock-in. It says every interaction makes it harder to replace, because it builds a living memory of how each customer pays, which portals it uses, and what breaks.
The competition
Stuut is not alone. New York-based Lunos, founded by Duncan Barrigan, a former chief product officer at GoCardless, raised a $5 million pre-seed round co-led by General Catalyst and Cherry Ventures in September 2025. Paris-based Cleavr raised €1 million in pre-seed funding led by Kima Ventures in March 2026 and, according to data it supplied, says its customers cut DSO by 37% and lifted cash flow by 40%. Fazeshiftraised a $17 million Series A led by F-Prime in May 2026, taking its total to $22 million.
London-based Round, which automates treasury, payments, and payroll rather than collections, raised a $6 million seed round in April 2026. On October 6, Germany’s Procuros raised €20 million led by XAnge to let AI agents automate global B2B trade.
Stuut’s backers have made this invetment before. Insight Partners, which says it has invested in more than 900 companies and seen over 55 portfolio companies reach an IPO, also led Xelix’s $160 million Series B for AI that automates accounts payable, the payables mirror image of Stuut’s pitch.
Andreessen Horowitz, which led Stuut’s Series A, also backed Valon, which is bringing AI agents to the mortgage market. M12’s investment was first disclosed on September 2, 2026, when Stuut announced a listing on Microsoft Marketplace and acceptance into the Microsoft for Startups Pegasus Program. Earlier backers include Khosla Ventures, Activant Capital, 1984 Ventures, and Page One Ventures.
“Many enterprises have more cash tied up in receivables than they realize. A single invoice error can trigger weeks of follow-up across teams and systems, and at scale that adds up to real revenue left on the table,” said Julian Marcu, vice president at Insight Partners and a board member at Stuut.
Stuut puts total funding at $93 million. Rounds it has disclosed add up to about $88 million, counting a $5.9 million seed, the Series A, and this round, and it did not say what accounts for the difference.
The company will use the new money to meet what it calls overwhelming customer demand and to push into the financial infrastructure around each transaction, from credit and lending to the movement of funds. Its stated goal is to carry a sale from the moment a company decides to make it, through every decision, document, and payment, until the cash is in the bank.
The real question is whether finance chiefs will let software decide if a short payment is a valid claim, rather than just send the reminder. Fivefold customer growth suggests many already will. The proof will have to come from numbers that someone other than Stuut has checked.
