Double
YC S21New York City, US · Founded 2020 · 80 employees · Hiring · 3 known investors
Double is a practice management platform that automates accounting workflows including month-end close, tax preparation, and financial reporting for bookkeeping and accounting firms globally.
Also known as Double (formerly Keeper) · Keeper
AI & Machine LearningEnterprise SoftwareFintechSaaSB2BUnited States of AmericaAmerica / CanadaFully Remote
Founders & leadership· Y Combinator alumni (S21)
Double was founded in 2020 by Ben Stein and Kenny Song.
BS
KS
Investors · 3
Funding
SEC filings, press & company announcements$6.5M disclosed across 1 of 2 rounds · 2024–2025
Source: company announcements and press reports — follow each round's link for the claim.
Competitors · 4
by search overlapIntuit®663 shared keywordsIntuit develops financial software products—including TurboTax, Credit Karma, QuickBooks, and Mailchimp—for consumers and small businesses to manage taxes, credit, accounting, and marketing. It serves approximately 100 million customers worldwide.
Fresh Books373 shared keywordsFreshBooks is a cloud-based accounting and invoicing platform designed for small service-based businesses. The software helps business owners manage invoicing, accounting, and financial connections with customers.
Xero214 shared keywordsXero provides cloud-based accounting software for small businesses and their advisors, serving around 5 million customers across 180+ countries including Australia, the UK, the US, and New Zealand. The page is an investor relations section covering financial results, annual reports, and shareholder information.
Karbon163 shared keywordsKarbon provides accounting practice management software for accounting firms, offering tools for team collaboration, workflow and task automation, client management, and email. It includes an AI assistant ("Kai") that draws on a firm's data to handle tasks and answer questions.
Companies competing with Double for the same Google search keywords, organic and paid, via search-intersection analysis.
In the news
Frequently asked questions
- What does Double do?
- Double is a practice management platform that automates accounting workflows including month-end close, tax preparation, and financial reporting for bookkeeping and accounting firms globally.
- Who founded Double?
- Double was founded by Ben Stein, Kenny Song in 2020.
- Who are Double's investors?
- Double's investors include Album VC, Y Combinator, Album Ventures.
- How much funding has Double raised?
- Double has disclosed $6.5M raised across 1 of its 2 known rounds.
- Where is Double headquartered?
- Double is headquartered in New York City, US.






