Stuut Raises $52.5 Million to Put AI Agents on Collections Calls: 81.7% of Outbound Chasing Now Runs Without a Human

The back office is becoming the newest front in the agent land grab. Stuut, a New York startup whose AI agents chase unpaid invoices, match payments and resolve disputes inside enterprise ERPs, said on Oct 7 that it raised a $52.5 million Series B led by Insight Partners. Andreessen Horowitz, M12 — Microsoft's venture fund — and Activant joined the round, which brings total funding to $93 million roughly ten months after a $29.5 million Series A led by a16z.

Stuut's pitch targets a process most finance teams still run by hand: order-to-cash, the stretch between a customer order and money in the bank. The platform covers order management, credit checks, collections, cash application, payments, disputes and deductions, and connects to systems companies already run — SAP, Oracle, NetSuite and Microsoft Dynamics — rather than asking them to rip anything out. The agents send the emails, make the calls and post approved entries back into the ledger, with every action logged for audit.

The numbers attached to the round are entirely company-reported and worth treating that way. Stuut says 81.7% of outbound collections activity on its platform now runs without human involvement, 95% of incoming payments are matched automatically, customers cut days sales outstanding by 47% and freed up as much as 40% more cash, more than 150 enterprises use the product — including Fortune 50 and Fortune 500 names — and over $3 billion in payments has moved through the system. The company's published DSO claim has also shifted over the year, from "37% faster" in March to a 47% reduction by September; no independent audit accompanies any of the figures.

Customer examples in the announcement show where the product is heading. ZoomInfo says Stuut has collected $21.2 million and cut time to first collections contact by more than 90%, with DSO improving from 51 to 40 days alongside other receivables initiatives. Bishop Lifting runs the platform across 45 branches and reports overdue receivables down 35%, with $3 million in working capital released. Honeywell uses Stuut on a legacy SAP environment and is extending it into quote-to-cash, and Verifone's finance team cites the audit trail as the reason it fits existing controls.

The market context explains the investor appetite. Stuut's materials put unpaid receivables worldwide at $16 trillion, with US businesses carrying $7.2 trillion in trade receivables, and the company argues a broken order-to-cash process can cost a business about 5% of revenue. Adjacent startups — Monk in accounts receivable, Fazeshift with Amex Ventures backing, plus incumbents HighRadius, Billtrust and Tesorio — are circling the same workflows, and the ERP vendors themselves are building their own automation.

Stuut says it will use the capital to meet demand and push beyond collections into credit, lending and the movement of funds — a step that moves the company from workflow software toward products that touch balance sheets. That is also where the claim to be an auditable AI coworker gets tested: the first time an agent posts a wrong entry to the ledger, the audit trail stops being a selling point and becomes the evidence file.