Startup
Double (formerly Keeper)
Month-end close and practice management for bookkeeping and accounting firms on QuickBooks Online and Xero, used by more than 4,000 firms; renamed from Keeper to Double in October 2025 after a trademark case.
| Founded | 2020, San Francisco |
|---|---|
| Founders | Ben Stein (CEO, former startup CFO), Kenny Song |
| Stage | Series A |
| Total funding | More than $12.5m |
| Last round | Series A, $6.5m, December 2025, led by Album Ventures with Jack Altman and Y Combinator |
| What it does | Close checklists, client questions, file review, management reports and a tax suite, connected to QuickBooks Online and Xero, with unlimited users per firm |
| Traction | More than 4,000 accounting and bookkeeping firms |
| Pricing | Per client per month: Core $10, Plus $25, Scale $50; tax suite add-on $200 a month on an annual plan |
| Markets | US, with firms in the UK and Australia |
| Peers | Financial Cents, Karbon, Uku, Client Hub, Jetpack Workflow |
Why it matters
Double has reached 4,000 firms on $12.5 million raised by pricing per client rather than per seat, which small firms prefer. The forced rename from Keeper in late 2025 makes its search presence worth rebuilding, and the directory carries both names.
Accountio coverage
AI Bookkeeping Tools: Why Accounting Firms Are Switching to Double
Updated September 2026.
Part of Accountio’s accounting technology coverage.
