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YC S26 · Active

Billow AI Labs

AI-native Accounting Firm that's killing Deloitte

Class
Summer 2026
Status
Active
Industry
B2B
Location
San Francisco, CA, USA
Team size
0

Website

https://thebillow.ai/

About

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.