Spark, Khosla, Sequoia Back Anrok in $55 Million Round to Bring AI to Tax Compliance

• ByStartupStory     |    October 21, 2025

In a major boost for AI-driven enterprise solutions, Anrok Inc., a startup helping software companies automate sales tax compliance, has raised $55 million in a Series C funding round, more than doubling its valuation to $525 million.

The round was led by Spark Capital, with participation from Sapphire Ventures, Khosla Ventures, Sequoia Capital, and Index Ventures. The funding underscores investors’ growing confidence in intelligent automation tools tackling one of the most complex aspects of modern business — tax compliance.

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