Startup
Anrok
Sales tax and VAT compliance built for software companies: nexus monitoring, calculation, registrations and filings across the US and international markets, used by Anthropic, Notion and Cursor.
| Founded | 2020, San Francisco |
|---|---|
| Founders | Michelle Valentine, Kannan Goundan (CTO); Brad Silicani is CEO and Gabe Westmaas is SVP of Engineering, Product and Design |
| Stage | Series C |
| Total funding | $109m across 4 rounds |
| Last round | Series C, $55m, October 2025, led by Spark Capital with Sapphire Ventures; Khosla, Sequoia and Index returning. Valuation $525m. |
| Earlier rounds | Series B $30m, April 2024; Series A $20m, March 2022; seed $4.3m, June 2021 |
| What it does | Connects to billing systems such as Stripe and Chargebee to track economic nexus, calculate tax on invoices, register in new jurisdictions and file returns, in the US and for VAT and GST abroad |
| Traction | Thousands of companies, 5,550+ tax professionals and more than US$100bn in transactions processed; customers include Anthropic, Mistral, Notion, Cursor, Clay and Vanta |
| Pricing | Starter US$100 per market a month; Custom priced on transaction volume |
| Markets | US, with international VAT and GST coverage |
| Peers | Avalara, Numeral, Sphere, Zamp, Kintsugi, Stripe Tax |
Funding
- Announced rounds
- US$109.3m in four rounds
- Latest round
- Series C, US$55m, October 2025, led by Spark Capital
Why it matters
Anrok has raised $109 million and is valued at $525 million, the most of the new sales tax companies. By building for software billing first it won the finance teams of the current AI generation, including Anthropic and Cursor, before Avalara could reach them.
Part of Accountio’s accounting technology coverage.
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