Double
Category: AI in Fintech
An AI-powered practice management platform that sits on top of accounting ledgers (QuickBooks/Xero) to streamline month-end closes, automate error detection, and manage client communication for bookkeepers. Double was founded in 2020. The company is led by Ben Stein. Based in New York, NY, United States. Total funding raised: $12.5M+. Latest round: Series A ($6.5M, Dec 2025). Key investors include Album Ventures, Jack Altman, Y Combinator, Mathilde Collin, Rahul Vohra, William Hockey.
- Founded
- 2020
- Headquarters
- New York, NY, United States
- Total funding
- $12.5M+
Value proposition
Doubles the power of accountants by reducing time spent on month-end closes by up to 50% through automated file reviews and a unified portal for client inquiries.
Products and solutions
Close Page / Month-End Close Workflow, Integrated File Review & AI Error Detection, AI Bank Feeds, Ask Double, AI Transactions & AI Journal Entries, Accruals, Receipts, 1099 Management, Management Reports, Client Portal & App, Client Database / CRM, Inbox
Unique value
Purpose-built for the 'month-end close' workflow with deep 2-way integration, allowing accountants to fix ledger errors directly within the project management interface.
Target customer
Bookkeeping firms, accounting/CAS agencies, outsourced CFOs, and internal finance teams managing month-end close across multiple entities
Industries served
Accounting & Bookkeeping, Fintech, Professional Services
Technology advantage
Combines project management with direct ledger read/write capabilities and AI-driven anomaly detection to eliminate manual data entry and catch coding errors automatically.
How they differentiate
Proprietary 2-way ledger sync (QuickBooks Online, Xero, Sage Intacct, NetSuite) enabling direct ledger edits inside the close workflow, plus AI automation (bank feeds, journal entries, anomaly detection) purpose-built for firm and internal-finance month-end close.
Main competitors
Financial Cents, Xenett, FloQast
Key partnerships
Intuit QuickBooks Online (Platinum App Partner, Jan 2026), Xero, Sage Intacct, NetSuite, Y Combinator (Investor), Album Ventures (Investor)
Notable customers
4,000+ Accounting & Bookkeeping Firms, MCO Bookkeeping / BeanSquad, Springstead Solutions, YetiBooks
Major milestones
Graduated Y Combinator (S21) in 2021, Rebranded from 'Keeper' to 'Double' in Oct 2025, Raised $6.5M Series A led by Album Ventures in Dec 2025, Named Intuit QuickBooks Platinum App Partner (Jan 2026)
Growth metrics
Serves 4,000+ accounting firms; ~80 employees (YC); more than doubled team size in 2025; net-dollar retention ~150%.
Market positioning
The first AI-powered Close Management Platform specifically for outsourced bookkeeping and accounting firms.
Geographic focus
North America
Patents and IP
No registered patents disclosed as of latest update
About Ben Stein
Ben Stein is the Co-Founder and CEO of Double (formerly Keeper). Previously: CFO @ Mira (enterprise AR startup, acquired by Apple); Operations @ SpaceX; Business Analytics @ Amazon. BS in Business Administration, USC Marshall School of Business.
Latest news about Double
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Official website: https://doublehq.com