Double, a close management and practice management platform for accounting and bookkeeping firms, announced Dec. 11 a $6.5 million Series A round led by Album Ventures, with participation from returning investor Jack Altman, co-founder and CEO of Lattice, and Y Combinator.
Earlier investors include Mathilde Collin, co-founder and CEO of Front; Rahul Vohra, founder and CEO of Superhuman; and William Hockey, CEO of Column and co-founder and former chief technology officer of Plaid.
In total, Double has raised more than $12.5 million to date.
Double, which was formerly known as Keeper, said it will use the new capital to accelerate product development, expand its engineering and customer success teams, and grow its partner ecosystem among top accounting firms and technology platforms.
The New York City-based company said it will also continue to invest in AI-powered features that reduce repetitive work and enhance the quality of financial reporting.
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“Double began with a simple idea: accountants deserve software that keeps pace with their expertise. Today, the platform is used by more than 4,000 accounting and bookkeeping firms across North America to manage month-end close, client communication, and file reviews—all in one place,” the company said in a media release. “In the past year, Double has seen record growth, helping firms close books for hundreds of thousands of businesses every month while saving dozens of hours per team each week. Double has grown its teams across engineering and go-to-market, more than doubling the company’s size in the last year. Net-dollar retention continues to hit 150%, underscoring their product-market fit and passion for making every customer successful.”
The Double platform is purpose-built for accountants, providing a unified workspace that centralizes client data, automates repetitive tasks, and helps firms close their books faster without sacrificing accuracy or human judgement.
“Accounting is the heartbeat of every business, but accountants are still held back by tools built for an earlier era,” Ben Stein, co-founder and CEO of Double, said in a statement. “With Double, we’re helping firms focus on the high-value work that truly matters—judgment, insight, and client relationships—while automating the rest.”
Double’s platform automates and streamlines core workflows across the close process, enabling accounting teams to work faster, smarter, and with higher accuracy:
- Close management: Track progress, assign tasks, and ensure every month-end is delivered on time, boosted by AI-enhanced workflows for bank feed coding, journal entries, and financial summaries.
- File review and quality control: Automate checks and flag errors to reduce review time and boost accuracy so accountants can focus on high-value judgment instead of manual reconciliation.
- Client collaboration: Centralize client requests and document sharing to replace long email chains, improving responsiveness and strengthening client relationships.
“Double is reshaping the future of accounting software by building with, not against, the professionals who power it,” said Sid Krommenhoek, founder and general partner at Album Ventures. “Their focus on augmenting accountants—not automating them away—has resonated deeply with firms who have long been underserved by legacy systems.
“Double’s growth is remarkable because it solves one of the most persistent pain points in finance: manual, fragmented close processes,” he added. “We believe Double will become the operating system for modern accounting firms.”
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