Anrok raises $55M in funding to automate global sales tax compliance for AI and SaaS startups

Global tax compliance has quietly become one of the biggest bottlenecks for fast-growing digital companies. As businesses scale across borders, managing sales tax filings in dozens of jurisdictions can turn into a full-time burden. Anrok, a San Francisco-based startup, wants to fix that—and investors are doubling down on its approach.

Today, Anrok announced it has raised $55 million in a Series C funding round led by Spark Capital, with participation from Sapphire Ventures, Khosla Ventures, Sequoia Capital, and Index Ventures. The new funding pushes Anrok’s total raised to over $100 million and will fuel its next phase of growth, from expanding AI-driven automation to building new partnerships that help modern finance teams stay compliant without slowing down innovation.

Anrok already counts more than 3,000 finance leaders as customers, including some of the fastest-growing names in tech like Anthropic, Cursor, and Notion. These companies rely on Anrok’s software to automate global tax compliance across every country and jurisdiction they operate in—cutting down the time teams spend on tax filings by as much as 90%.

The platform has become indispensable for the digital economy, covering SaaS providers, e-commerce marketplaces, hardware makers, and especially AI startups. Over 40% of the companies on the Forbes AI 50 list now use Anrok to manage their tax obligations, a sign of how deeply the product has embedded itself into the infrastructure of high-growth companies.

The scale of the problem Anrok is tackling is enormous. Global tax rules are multiplying quickly—over 100 countries now impose VAT or GST on digital goods, and U.S. state regulations continue to fragment. Based on Anrok’s data from more than 32 million monthly transactions, filing requirements explode as revenue grows. A company with $1 million in annual revenue might face just two filings a year; at $50 million, that number can jump to more than 94. The share of revenue subject to taxation doubles from 20% to over 50%. Manual processes can’t keep up, which is where Anrok steps in with its AI-native automation engine.

The company was founded by technology veterans who teamed up with global tax and accounting experts to build software that merges machine intelligence with human oversight. Anrok’s system uses AI to process documents, extract data, and manage filings efficiently—but with tax specialists reviewing results to ensure everything stands up under audit.

“Knowing our tax compliance automatically scales with our billing allows us to focus on product development without diverting engineering resources to tax complexity,” said Connor Solimano, Business Operations and Strategy at Cursor.

That mix of automation and expert validation has made Anrok stand out in a space that’s been slow to modernize. As Yasmin Razavi, General Partner at Spark Capital, put it, “Global sales tax compliance has been broken for too long – it’s one of those problems that gets exponentially harder as companies scale. Anrok has built the first solution that actually scales with modern businesses.”

With its new funding, Anrok plans to expand its R&D efforts and deepen its integrations with global finance systems. CEO and co-founder Michelle Valentine said the company is building “the tax infrastructure that can keep up with the pace and scale” of the world’s fastest-growing companies.

“Anrok powers compliance for some of the fastest-growing AI companies worldwide,” Michelle Valentine, CEO and co-founder at Anrok, said. “We’re building the tax infrastructure that can keep up with the pace and scale of their demand, and allow customers to focus on growing their business across borders.”

From its base in San Francisco, Anrok is positioning itself as the go-to platform for tax automation in the digital economy—turning a once-painful administrative chore into a scalable part of the business stack.