Billow AI Labs
Billow AI Labs is a YC Summer 2026 (S26) company. Based in San Francisco, CA, USA.
About Billow AI Labs
Summary
Billow AI Labs builds an AI-native accounting firm that executes the day-to-day work of accounting and FP&A staff: month-end close, reconciliations, accruals, consolidations, audit workpapers, and variance analysis. It operates directly inside tools companies already run, including NetSuite, QuickBooks, Coupa, and complex Excel workbooks, replacing the manual coordination and data entry that finance teams and their outside accountants currently do by hand. Enterprises and accounting firms are the target customers.
Business model
Bookkeeping services starting at $1,000 per month
Go-to-market
Finance teams at enterprises and accounting firms are the buyers; they book a demo to get started, and Billow onboards by learning from the workflows those teams already run rather than requiring process changes.
From the Y Combinator listing
AI-native Accounting Firm to Replace the Big-4
Billow handles the work of Accounting and FP&A FTEs keeping teams compliant and audit-ready. We work within existing stacks (NetSuite, Coupa, and 80+ other systems) and complex spreadsheets, chasing down information and coordinating approvals across stakeholders. Built by repeat founders; Joan built and exited an accounting/ERP platform (45,000 businesses in 4 years) and Phil built Bloomberg's financial “brain” data infrastructure, and as CTO of a trading platform ($1B in volume). Advisors include CFOs, controllers, auditors from publicly-traded biopharma, and a Big-4 Accounting firm.
Facts
- B2B / B2B -> Finance and Accounting
- San Francisco, CA, USA
- Active
- Early
Founders (2)
- Philip Moniaga
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