Hi there and welcome to Funded, where we spotlight early-stage bets on the future of tech.
Today, we’re highlighting Double, the newly rebranded accounting platform (formerly Keeper) that just raised $6.5 million to help firms close books faster, smarter, and with more human impact.
Double, which now serves over 4,000 firms across North America, has secured its Series A from Album Ventures, Jack Altman, and Y Combinator. The platform brings close and client management into one unified workspace, with the goal of cutting down on spreadsheets and lengthy email chains.
Founded in 2020 by Ben Stein, then-CFO of a venture-backed startup, and Kenny Song, a longtime SaaS engineer, Double was born out of firsthand pain with the month-end close. “So much of my work was spreadsheets, and email, and QuickBooks open on three different monitors,” Stein said. “Kenny and I started Double to build what we thought should exist.”
At its core, Double is building what Stein calls “the AI-driven future of accounting on software designed for the people who will always sit at the center of the profession.” That means streamlining workflows without sidelining the judgment and client focus that humans bring to the table.
Double integrates directly with accounting ledgers to become the environment where work actually happens. As for how the company plans to build a moat against major incumbent players, “…we differentiate ourselves primarily through our integration to the ledger that helps accountants actually do accounting work,” Stein told Future Nexus.
This model is gaining steam; in the past year, Double has more than doubled in size to nearly 80 employees, helping firms close books for hundreds of thousands of businesses each month. Net-dollar retention sits at 150%, and customer expansion is accelerating.
For Double, human-centric AI is core to the way they view the product’s evolution. “AI is expanding what’s possible every day, and firms are ready to invest in tools that move them into that future now,” Stein said. “But when a vision isn’t grounded in the realities of how people work today, it creates a gap between humans and the AI they’re meant to trust. And when the future finally arrives, that gap isn’t a step forward—it’s a chasm.”
The company plans to use the new capital to invest further in product, grow its engineering and customer success teams, and expand its partner ecosystem with top accounting firms and tech platforms. It also aims to bring new AI-powered capabilities to market that enhance reporting quality while stripping out repetitive work.
“Double is the most intuitive and effective product on the market, and it all traces back to how it was built—with accountants, for accountants,” said Sid Krommenhoek, founder and general partner at Album Ventures. “When you work closely with the end user, the chances of marrying innovation to real needs goes up. Software and AI, at best, let humans focus on the human side of their work—and less on the tedious tasks that can’t be compromised.”
Looking ahead, Double sees its mission as deeply collaborative with the accountants who use their product. “We’ve heard over and over how much firms value tools that are built alongside them, not for them,” Stein added. “That closeness to the customer—that’s what drives our roadmap and makes the product work in the real world.”
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This article was drafted with the help of generative AI using company-submitted details, then manually edited and carefully reviewed by a human editor before publication.
