Rillet raises $100M at $1 billion valuation in 48 hours
Money MovesAI-native accounting platform's third round in just over a year follows a quarter of doubled revenue
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Overview
Updated 1 hour agoRillet, an AI-native accounting startup, raised $100 million at a $1 billion valuation. The round closed in under 48 hours, after a board meeting where the company told investors its revenue had doubled in a quarter. It wasn't looking for money.
Rillet's agents post entries and close the books inside a live general ledger, with a full audit trail of every decision. At public-company clients, regulations require human sign-off on each AI-made transaction. If this works at scale, it undercuts the reason companies buy Oracle, SAP, Workday, and NetSuite.
Why it matters
If AI agents handle corporate bookkeeping, finance teams shrink and every public company's audit trail runs through software it must verify.
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Organizations Involved
Builds an AI-native ERP where agents do bookkeeping inside a real-time ledger with human approval and audit trails.
Growth-stage investor that led the $100 million round.
One of the Big Four audit firms, working with Rillet to bring AI tools to auditing.
Venture firm that has backed Rillet since an early round and joined the Series C.
Venture firm that participated in Rillet's Series C.
Timeline
January 2021 August 2026
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Rillet closes $100M Series C at $1B valuation
Latest FundingRound closed in under 48 hours after a board meeting; ARR doubled in the quarter.
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EY alliance announced
PartnershipRillet and EY team up on AI tools for auditing.
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$70 million Series B
FundingRaises $70 million Series B from existing backers.
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Rillet emerges from stealth
CompanyLaunches AI-native ERP platform two years before its unicorn round.
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Rillet founded
CompanyFormer N26 executives Nicolas Kopp and Stelios Modes start Rillet in San Francisco.
Historical Context
3 moments from history that rhyme with this story — and how they unfolded.
Salesforce vs. Siebel (1999-2006)
Salesforce launched cloud customer-relationship management in 1999, while Siebel Systems dominated on-premise sales software. By 2005 Siebel's growth had stalled and Oracle acquired it for $5.85 billion.
Siebel disappeared into Oracle while Salesforce kept compounding.
The episode showed a new delivery model could overtake an entrenched leader faster than incumbents expected.
Rillet's bet is that AI-native beats SaaS the way SaaS beat on-premise software.
Sarbanes-Oxley Act (2002)
After the Enron and WorldCom collapses, Congress passed the Sarbanes-Oxley Act in July 2002. It forced public companies to certify internal controls over financial reporting and created the Public Company Accounting Oversight Board (PCAOB) to oversee audits.
Compliance costs jumped and accounting software added audit and control features to meet the new rules.
SOX set the standard that financial systems must prove accuracy and traceability, a standard now being applied to AI.
AI bookkeeping faces the same demand for provable, auditable controls, which is why Rillet built human approval and audit trails into the product.
Workday vs. Oracle and SAP (2005-2012)
Dave Duffield and Aneel Bhusri founded Workday in 2005, months after Oracle acquired their previous company, PeopleSoft. Workday sold cloud ERP with a unified data model and had hundreds of enterprise customers by its 2012 IPO.
Oracle and SAP spent years rushing out cloud products that trailed Workday.
Workday proved a new software architecture could displace entrenched ERP incumbents within a decade.
Rillet is attempting the same displacement with AI-native accounting, against the same incumbents plus NetSuite.
