---
title: "What Is Rillet’s Valuation in 2026? $1B After $100M Series C"
description: "Rillet closed a $100M Series C at $1B on August 17, 2026, led by ICONIQ, with Sequoia and a16z returning. Third round in 14 months. Named customers include Temporal. Revenue dollars were not disclosed."
date: 2026-08-17T00:00:00.000Z
tags: ["2026-vc-news", "startup-funding", "venture-capital", "fintech", "artificial-intelligence"]
source: https://venturecapitaltracker.com/2026-rillet-100m-series-c-1b-iconiq
---

# What Is Rillet’s Valuation in 2026? $1B After $100M Series C

> Rillet closed a $100M Series C at $1B on August 17, 2026, led by ICONIQ, with Sequoia and a16z returning. Third round in 14 months. Named customers include Temporal. Revenue dollars were not disclosed.

**Rillet is worth $1 billion** after a **$100 million Series C** on **August 17, 2026**, led by **ICONIQ**. [Sequoia](/fund/sequoia) and [Andreessen Horowitz](/fund/andreessen-horowitz) returned. That is the **third** priced round in **14 months**.

**Unexpected truth:** this close landed the same Monday as Higgsfield, Groq, Wispr, and Gravis — and got crowded out of most “AI mega-round” roundups. It is still a **unicorn ERP** print with named customers, including [Temporal](/startup/temporal). **Revenue dollars were not disclosed.**

This page is for people deciding whether AI-native accounting infrastructure is a real category or a feature. Last verified **August 19, 2026**.

## Five-minute decision

| If you need… | Verdict |
| --- | --- |
| What happened | **Funded.** $100M Series C @ **$1B**, ICONIQ lead, Aug 17, 2026. |
| What Rillet is | AI-native **ERP / general ledger**, not a chatbot bolted onto NetSuite. |
| Whether it is “big” | **Customers named. ARR dollars not named.** >600 customers; “doubled new ARR” in three months. |
| Whether to diligence | **Yes**, if you underwrite system-of-record replacement. **No**, if you need a disclosed ARR multiple. |

**Investigate further when:** you believe month-end close is the workflow agents can actually own, and $1B is cheap next to NetSuite’s install base.

**Wait or pass when:** your bar is audited ARR, or you think Oracle/SAP will ship “good enough” agents first.

## What happened

| Field | Detail |
| --- | --- |
| Company | Rillet ([rillet.com](https://www.rillet.com)); San Francisco; CEO Nicolas Kopp (former N26 U.S. CEO) |
| Round | **$100M Series C** · **$1B** valuation · Aug 17, 2026 (company) |
| Lead | ICONIQ (no `/fund/` page here); Seth Pierrepont to the board |
| Directory funds | [Sequoia](/fund/sequoia), [a16z](/fund/andreessen-horowitz), [Bain Capital Ventures](/fund/bain-capital-ventures), [Battery Ventures](/fund/battery-ventures), [Scale Venture Partners](/fund/scale-venture-partners), [Creandum](/fund/creandum) |
| Other names in the PR | Sequoia Global Equities, Oak HC/FT, FirstMark |
| Traction disclosed | >600 customers; doubled **new ARR** in the last three months; EY alliance earlier in 2026 |
| Named customers | Mercor, Function Health, [Temporal](/startup/temporal) |
| Prior | **$70M Series B**, Aug 6, 2025, a16z + ICONIQ co-lead; **$25M Series A**, May 2025, Sequoia |
| Use of proceeds | “Accounting superintelligence” — agents inside the ledger, not a new adjacent app |

## What Rillet actually does

**Product (company):** an ERP where a **real-time general ledger** is the harness. AI agents post, reconcile, and close; humans approve; there is an audit trail.

**Job:** replace the pattern of “NetSuite stores the books, Excel does the work.”

Rillet says it is expanding beyond tech/AI companies into biotech, healthcare, fintech, logistics, and professional services — and that buyers are ripping out Oracle Fusion, SAP, Workday, Microsoft Great Plains, and NetSuite. That is **pipeline language**, not a disclosed win table.

## How big is Rillet actually?

| Question | Disclosed? | What we have |
| --- | --- | --- |
| Valuation | **Yes** | **$1B** (company, Aug 17) |
| Series C size | **Yes** | **$100M** |
| Total funding | **Company vs math** | Company: **>$200M**. Sum of A+B+C headlines: **$195M**. Do not flatten that. |
| ARR dollars | **No** | “Doubled new ARR” in three months — rate, not base |
| Customer count | **Yes** | **>600** (company) |
| Named logos | **Partial** | Mercor, Function Health, Temporal |
| Series B valuation | **Press** | Reuters (2025): about **$500M**. Not restated in the C post |
| Headcount | **No** | Not in the C post |

**“Doubled new ARR” is not “doubled ARR.”** New bookings can double from a small base while the installed base is still modest.

## Worked numbers (indicative)

1. **Setup:** May 2025 — $25M Series A (Sequoia). Aug 2025 — $70M Series B (~$500M mark, Reuters).
2. **Move:** Aug 17, 2026 — $100M Series C at $1B (ICONIQ).
3. **Punch:** If Reuters’ ~$500M B mark holds, the C is about **2× in 12 months**. If Mercor really runs **$2B ARR** with **three** finance people on Rillet, the demo is labor density, not Rillet’s own revenue.

Label the Mercor anecdote as **Rillet’s customer story**. We do not have a Mercor profile here to confirm the $2B figure.

## Rillet vs Basis — what differs

Basis is the closest 2026 **AI accounting** print we can cite without inventing a page.

| | Rillet | Basis (press, Feb 2026) |
| --- | --- | --- |
| Latest round | **$100M Series C @ $1B**, Aug 17 | **$100M @ $1.15B**, Feb 2026 |
| Lead | ICONIQ | Accel (Business Wire; Accel has no `/fund/` page here) |
| Product | AI-native **ERP / ledger** | AI agents for **accounting firms** (tax, audit, CAS) |
| Cap table we can link | Sequoia, a16z, BCV, Battery, Scale, Creandum | Not in our directory as an entity |
| Proof on this site | Named customers + >600 logos | Not covered as a profile |

Rillet vs NetSuite/Oracle: incumbents have compliance gravity. Rillet is betting **agents cannot sit on top of a batch ledger**. Choose Rillet when the buyer will rip out the system of record. Choose the incumbent when audit and multi-entity complexity dominate.

## Why investors likely wrote $100M

### Known evidence (company)

- ICONIQ **already sat on the B** and is now leading the C.
- Returning [Sequoia](/fund/sequoia) and [a16z](/fund/andreessen-horowitz) — not a new-logo syndicate.
- Named operator customers, including [Temporal](/startup/temporal), which is itself an infrastructure company (and, separately, in **unconfirmed** $12B talks).
- EY alliance and “more than half of Accounting Today top 20 CPA firms” as partners — distribution into auditors, not only founder-led startups.
- Third raise in 14 months implies the board is willing to take dilution to fund the category grab.

### Our interpretation (not an ICONIQ memo)

| Bet | Why it could justify $1B |
| --- | --- |
| System of record | Ledger replacement is a harder moat than a close copilot |
| Labor density | Mercor-style “$2B ARR / three accountants” is the slide that sells |
| Auditor channel | EY/KPMG language is how you survive a Big Four review |
| Category timing | Every AI company still closes the books; the ERP has not been rewritten |

**What we cannot claim:** Rillet’s own ARR, win rates vs NetSuite, or that “>$200M raised” matches a public cap table.

## What has to be true for Rillet to win

1. Agents posting into the ledger survive **audit**, not just month-end theater.
2. Multi-entity, multi-currency, revenue-recognition edge cases do not bounce buyers back to NetSuite.
3. “Doubled new ARR” continues after the $1B headline.
4. CPA-firm partnerships produce **implementations**, not logos.
5. $100M buys product depth, not a second overlapping AI chat surface.

## What could break the thesis

- Oracle/SAP ships an agent layer that finance chiefs will accept.
- Customer concentration in AI startups reverses when those buyers slow hiring.
- ICONIQ’s $1B mark is a **friendly** step-up without a competitive process.
- Arithmetic on total raised (**$195M** vs **>$200M**) is a reminder that even the funding total is slightly mushy.

## When not to use this page

- Do not treat the **2025 Series B** as current. The live mark is **$1B**.
- Do not convert “doubled new ARR” into a dollar ARR.
- Do not use Mercor’s alleged $2B ARR as Rillet’s revenue.
- Do not invent an ICONIQ `/fund/` page.

## Where to go next

Entity: [Rillet](/startup/rillet). Same-week AI tape: [August 14–18 VC news](/2026-august-14-18-investment-news-ai-infra-physical). If you are mapping a16z software: [a16z hot companies](/2026-a16z-hot-portfolio-companies). Temporal, named as a customer, is still marked at the February **$5B** Series D until a close is confirmed: [Temporal Series D](/2026-temporal-300m-series-d-durable-execution).