Lightspeed Leads $23M Series A in AI Accounting Startup Stacks

February 24, 2026

Lightspeed Leads $23M Series A in AI Accounting Startup Stacks

Published: February 24, 2026 at 1:04 AM

Updated: February 24, 2026 at 1:04 AM

100-word summary

Stacks closed a $23 million Series A led by Lightspeed on February 19, 2026, with EQT Ventures, General Catalyst, and S16VC participating. The AI accounting platform, which raised $12 million in its seed round a year ago, now counts over 30 enterprise customers including Future PLC and Epidemic Sound. The fresh capital will scale the platform and accelerate enterprise deployments. With total funding now around $35 million, Stacks is pushing into corporate finance departments as AI automation moves beyond pilot projects into production accounting workflows.

What happened

Stacks closed a $23 million Series A led by Lightspeed on February 19, 2026, with EQT Ventures, General Catalyst, and S16VC participating. The AI accounting platform, which raised $12 million in its seed round a year ago, now counts over 30 enterprise customers including Future PLC and Epidemic Sound. The fresh capital will scale the platform and accelerate enterprise deployments.

Why it matters

With total funding now around $35 million, Stacks is pushing into corporate finance departments as AI automation moves beyond pilot projects into production accounting workflows.

Sources