Pomegra
Casap, a US fintech AI startup, closed a $56M Series B led by Base10 Partners, with Synchrony and Experian joining as strategic investors to automate bank dispute handling.
Key Takeaways
- Casap raised a $56M Series B led by Base10 Partners on October 28, 2026; valuation was not disclosed.
- Synchrony and Experian joined as strategic investors, lifting total funding to about $90M since the 2023 launch.
- The company says its chargeback win rate is 96%, against a 60% industry average.
Lead
Casap, which builds AI software that helps banks and card issuers handle disputes and chargebacks, announced a $56M Series B on October 28, 2026. Base10 Partners led the round. Card lender Synchrony and credit bureau Experian joined as strategic investors, alongside existing backers Lightspeed Venture Partners, Emergence Capital and Primary Venture Partners. Casap has now raised roughly $90M since its 2023 launch and did not disclose a valuation.
What Does Casap Actually Do?
Casap sells AI tools that take a cardholder dispute from intake to resolution. Its models are built to flag fraudulent claims, with human review kept in the loop. More than 100 banks, credit unions, fintechs and processors use the product, according to the company.
The company reports that customers cut first-party fraud losses by up to 51%. It puts its chargeback win rate at 96%, versus an industry average of about 60%, and average resolution time at eight days, versus up to 90 days under traditional processes. These figures come from Casap itself and have not been independently audited.
CEO and co-founder Shanthi Shanmugam described the problem in blunt terms. "When you look at the rules that govern these disputes, they are written in a way that almost assumes that no one lies," she said.
Why Is First-Party Fraud Driving the Round?
First-party fraud is the core market because cardholders themselves now account for nearly a third of fraudulent transactions. Customers file false disputes, a practice made easier by AI tools and social media tips on how to game issuer rules. Banks have historically refunded first and investigated later, which makes the abuse cheap to attempt.
That economics problem is what Casap targets. Each dispute handled by hand costs staff time, and each lost chargeback costs the full transaction value. Automating the evidence review and representment steps shifts the math, at least on the company's numbers.
What Does the Round Say About the Last One?
The Series B arrives just over a year after Casap's $25M Series A, which Emergence Capital led in August 2025 with participation from Lightspeed, Primary and SoFi. That round was reported to value the company at about $105M and brought total funding to $33.5M. Casap says revenue has grown 10x since.
The step up is large. A $56M Series B is bigger than most US fintech rounds at that stage. The addition of Synchrony and Experian is the more telling detail: one is a major card issuer and the other sits on the data side of fraud and credit decisions. Strategic money from buyers and data partners tends to signal distribution, not just capital, though it also raises questions about how independent the product stays across competing customers.
The undisclosed valuation limits any read on pricing. Without a figure, the 10x revenue claim cannot be checked against what investors paid, and the base revenue is also undisclosed.
Where Will the Money Go?
Casap plans to expand into adjacent back-office work, specifically customer complaints handling and collections. Both share the same structure as disputes: high volume, rules-heavy, document-driven and still staffed largely by people at many banks. The company has also pointed to fraud and claims as further extensions.
The expansion carries execution risk. Complaints and collections are regulated differently from chargebacks, and a bank buying a dispute tool is not automatically ready to hand over collections. Casap will need to show that its models generalize beyond card networks' dispute rules, which are standardized by Visa and Mastercard.
What Comes Next for AI in Bank Operations?
Competition for bank back-office automation is widening, as lenders look for AI vendors that can document decisions for regulators. Disputes are an early test case because outcomes are measurable: win rates, resolution days and loss dollars. If Casap's reported gains hold across its 100-plus customers, the same pitch will carry into complaints and collections. If they fall short at larger issuers, the strategic investors' endorsement will matter less than the production results.
Outlook
Casap has moved from a $25M Series A to a $56M Series B in about 14 months, backed by an issuer and a data provider that both depend on dispute outcomes. The metrics are company-reported, the valuation is undisclosed, and the planned move into collections and complaints is unproven. The next signals will be customer expansion at large issuers and whether the performance claims survive scale.
