# Quanta

> Quanta is a San Francisco accounting company that combines an in-house accounting team, a proprietary general ledger, and an AI reporting layer for growing software businesses. Rather than placing a dashboard on top of another accounting system, Quanta owns the books end to end - from categorization and reconciliations to revenue recognition, close, reporting, and tax coordination - so every reported number remains linked to the work and judgment behind it.

- **Founded:** 2023
- **Headquarters:** San Francisco, United States
- **Founders:** Helen Hastings (Founder and CEO)
- **Products:** Managed accounting, Quanta general ledger, Prism, Quanta Departments, Tax and finance support
- **Notable:** Raised $19.7 million across its disclosed seed and Series A financings., Opened its beta to any software business in February 2025 after working with dozens of paying beta customers., Launched Prism alongside a $15 million Series A in December 2025.

## Products & services

- **Managed accounting** — An in-house accounting team owns bookkeeping, reconciliations, accruals, revenue recognition, financial statements, close, audit preparation, and accounting judgment for growing software companies.
- **Quanta general ledger** — A proprietary, event-sourced ledger that ingests operational and financial data, applies policy, posts entries, reconciles continuously, and keeps number lineage attached.
- **Prism** — An AI reporting workspace for asking plain-language financial questions and tracing answers back to reconciled entries and source activity.
- **Quanta Departments** — Department-level spend tracking that maps payroll, expense, and vendor activity into continuously updated team views.
- **Tax and finance support** — Tax coordination and filings, controller services, CFO support, and startup financial operations; Quanta states that it is not a public accounting firm and does not perform licensed attest work.

## Achievements

- Raised $19.7 million across its disclosed seed and Series A financings.
- Opened its beta to any software business in February 2025 after working with dozens of paying beta customers.
- Launched Prism alongside a $15 million Series A in December 2025.
- A customer testimonial reports an 85% reduction in closing time.
- Lightning AI moved from a 20–30 day outsourced close to continuously maintained books with most month-end work already complete.
- Built core replacements for bookkeeping workflows commonly spread across QuickBooks or NetSuite, spreadsheets, and service providers.

## Latest updates

- **2026-05** — Published a detailed argument for preserving accounting context inside the ledger and said customers including Braintrust, Browserbase, Decagon, and Paraform had moved core accounting work onto Quanta.
- **2026-04** — Founder Helen Hastings discussed continuous close and explainable finance on the Count Me In podcast.
- **2026-03** — Clarified Quanta's position as both an outsourced accounting replacement and a continuously maintained financial system.
- **2026-01** — Published a Lightning AI customer case study describing a shift away from a 20–30 day outsourced close.
- **2025-12** — Raised a $15 million Series A led by Accel and launched Prism, its agentic reporting layer.

## Links

- Website: https://www.usequanta.com/
- LinkedIn: https://www.linkedin.com/company/usequanta/
- Twitter/X: https://x.com/UseQuanta

---

Profile page: https://yespress.io/quanta
Published by YesPress — https://yespress.io
Last updated: 2026-09-24