$100m · Series C · Fintech · New York, United States
New York-based Rillet has raised a $100m Series C led by ICONIQ at a $1bn valuation, with Sequoia, Andreessen Horowitz, Sequoia Global Equities, Bain Capital Ventures, Oak HC/FT, Battery Ventures, FirstMark, Scale Venture Partners and Creandum participating. The company announced the financing on 17 August 2026 and said it had now raised more than $200m.
Rillet is building an enterprise resource planning system around a real-time general ledger rather than adding AI tools to an older accounting database. Data from systems such as Salesforce, Stripe, Ramp and Brex can flow into the ledger, where agents handle work including reconciliation and transaction coding while finance teams retain approval authority and an audit trail. The company says the new capital will support its effort to extend that model beyond technology companies into sectors including healthcare, biotech, logistics and professional services.
The ledger becomes the execution layer
The commercial bet is that finance automation becomes more useful when it operates inside the system of record. An agent working directly with ledger data can use the same accounting policies, controls and transaction history as the finance team, instead of producing suggestions in a separate tool that still need to be transferred and checked. Rillet's July product update showed this approach in practice through native integrations and automated workflows spanning cash matching, expenses, revenue recognition and reporting.
That positioning also raises the cost of getting adoption wrong. Replacing an ERP touches close processes, audit evidence, integrations and financial controls, so buyers need more than a faster interface. Rillet says it now serves more than 600 customers and doubled new annual recurring revenue in the three months before the round. In a TechCrunch interview, CEO Nicolas Kopp said half of customers had moved from Intuit products, while the rest came from systems including NetSuite, Sage Intacct, Oracle, SAP, Workday and Microsoft.
Governance is part of distribution
Rillet's emphasis on human approval and auditable agent decisions is not only a compliance feature. It is part of how the company can persuade larger finance teams and their advisers to replace core infrastructure. The company has formed alliances with accounting firms including EY and says more than half of Accounting Today's top 20 CPA firms are partners. ICONIQ's investment thesis, as reported by TechCrunch, rests on customers using Rillet as operating infrastructure rather than as a pilot layered onto existing systems.
The Series C therefore funds a demanding transition: from winning fast-growing technology companies to proving that an AI-native ledger can meet the control, migration and integration requirements of broader enterprise markets. If Rillet can preserve auditability while agents take on more complex work, the general ledger becomes both its product advantage and its distribution constraint.
