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14,448 startups · 29 programs

Billow AI Labs

Active · AI-native Accounting Firm that's killing Deloitte

WebsiteYC profile

Why it ranks

How the rank works
4signal of 100 · rising 4
  • went through YCProgram · this site+4

A sum of public facts, not a judgement and not investment advice.

Competitors

AIBearShared: accounting firm, finance, nativeYC S26HelsinkiStartup →AIBalanceShared: accounting firm, stackYC W26LondonStartup →AISorabanShared: accounting firm, nativeYC W21TempeStartup →AIFinlensShared: accounting firm, finance, spreadsheetYC W20San FranciscoStartup →AIRationalShared: accounting firm, financeYC S26San FranciscoStartup →
Companies closest to Billow AI Labs
Company
BearShared: accounting firm, finance, nativeYC S26ActiveAI
BalanceShared: accounting firm, stackYC W26ActiveAI
SorabanShared: accounting firm, nativeYC W21ActiveAI
FinlensShared: accounting firm, finance, spreadsheetYC W20ActiveAI
RationalShared: accounting firm, financeYC S26ActiveAI

Adjacent

AICifratoShared: accounting firm, erpYC W25BogotáStartup →OtherInactiveMogaraShared: chasing down, finance, accountingYC W23San FranciscoStartup →AIKintowShared: accounting firm, existing, informationspeedrun SR005New YorkStartup →AIInactiveFinntShared: workflow automation, finance, accountingYC W22Startup →AIBluebookShared: accounting firmYC W25StockholmStartup →
Companies next to Billow AI Labs
Company
CifratoShared: accounting firm, erpYC W25ActiveAI
MogaraShared: chasing down, finance, accountingYC W23InactiveOther
KintowShared: accounting firm, existing, informationspeedrun SR005Not statedAI
FinntShared: workflow automation, finance, accountingYC W22InactiveAI
BluebookShared: accounting firmYC W25ActiveAI

Also from S26 in AI

All of S26
AIZommaThe AI BPO for financial servies, run by computer-use agentsYC S26San FranciscoStartup →AIAudunAI-native debt collection companyYC S26OsloStartup →AICaptoBuild something the government wantsYC S26San FranciscoStartup →AIComputableDerivatives Exchange for ComputeYC S26New York CityStartup →AIControl SeatAI that runs factories.YC S26San FranciscoStartup →AIFlowManualAI for Construction's Back OfficeYC S26San FranciscoStartup →
Company
ZommaThe AI BPO for financial servies, run by computer-use agentsteam of 5ActiveAI
AudunAI-native debt collection companyteam of 5hiringActiveAI
CaptoBuild something the government wantsteam of 2ActiveAI
ComputableDerivatives Exchange for Computeteam of 2ActiveAI, Devtools
Control SeatAI that runs factories.team of 2ActiveAI, Devtools
FlowManualAI for Construction's Back Officeteam of 2ActiveAI

Founders

  • Joanathan McIntoshFounder/CEO
  • Philip MoniagaFounder/CTO

About Billow AI Labs

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.

YC batch
S26 · Summer 2026
Status, per YC
Active
Category
AI
Location
San Francisco, CA, USA
Checked
7h ago

YC tags: Finance, B2B, Workflow Automation, AI

Changes seen

TagsOct 19, 2026

Newly tagged AI; no longer tagged Artificial Intelligence.

Source ↗

Billow AI Labs in S26: 229 companies, 88% AI

LinkedIn

Billow AI Labs: questions

Which YC batch was Billow AI Labs in?

Billow AI Labs was in Y Combinator's Summer 2026 batch (S26).

Is Billow AI Labs still active?

Y Combinator lists Billow AI Labs as active.

Who founded Billow AI Labs?

Billow AI Labs's founders, as listed on its YC page: Joanathan McIntosh (Founder/CEO), Philip Moniaga (Founder/CTO).

Where is Billow AI Labs based?

Billow AI Labs lists San Francisco, CA, USA as its location on YC's directory.