The global sales tax platform built for modern software and AI companies.
ANROK, INC. — 548 Market St, San Francisco. The company's mark sits on a platform that quietly clears tax across more than 100 countries.
Sales tax is the problem almost no founder plans for and almost every one eventually hits. In the United States alone it spans more than 12,000 jurisdictions, each with its own opinion about whether a piece of software counts as taxable. Cross a border and the rules change again into VAT and GST. For a fast-growing company, the moment of reckoning usually arrives during due diligence, in the form of a surprise liability nobody budgeted for.
Anrok, founded in San Francisco in 2020, was built to make that moment stop happening. It is a global sales tax, VAT and GST compliance platform aimed squarely at software and digital businesses. The system watches a company's sales activity, flags when it crosses a tax threshold in a given jurisdiction, calculates the correct tax in real time, and then handles the filing, remittance and reporting that follow.
The pitch is less about excitement than about relief. Anrok says finance teams using its platform reclaim roughly 90% of the time they once spent on indirect tax, with many closing the work in under an hour a month. That is the quiet promise of good infrastructure: you stop thinking about it.
The company's customer list has become its strongest argument. Anthropic, Cursor, Notion, Thinking Machines and Vanta all run compliance on Anrok, and the company says over 40% of the Forbes AI 50 are customers. In total, more than 3,000 finance teams use the platform, which now services roughly $30 billion in customer revenue worldwide.
The core difficulty with sales tax is not any single rule - it is the volume and the velocity. Anrok points out that as a company scales, its filing requirements can multiply as much as 47x. A spreadsheet that worked at ten states breaks at forty, and breaks harder once VAT and GST enter the picture.
Anrok treats tax as software infrastructure rather than a periodic chore. It continuously monitors nexus, validates VAT IDs and exemption certificates to keep B2B transactions audit-ready, and connects to billing and ERP systems with no-code integrations. Where incumbents like Avalara and Vertex serve every industry, Anrok narrows its focus to how software and digital goods are actually taxed - and then does the filing itself.
Figures reported by Anrok; relative, not to scale. Company-sourced metrics.
“Global sales tax compliance has been broken for too long. Anrok has built the first solution that actually scales with modern businesses.”
Continuously tracks sales activity to detect when a business crosses economic nexus thresholds, with real-time exposure alerts across US states and international jurisdictions.
Calculates sales tax, VAT and GST at checkout in real time, with customizable tax codes for different software and digital-goods categories.
Handles registration, filing, remittance and reporting so teams can close indirect tax in under an hour a month.
Collects and validates exemption certificates and VAT IDs to keep B2B transactions compliant and audit-ready.
Connects to Stripe, NetSuite, Shopify and Salesforce and other billing and ERP systems without engineering work.
An AI feature extracts data from lengthy tax documents, part of a native global platform unifying US tax, VAT/GST and e-invoicing.
Anrok's user is the finance or accounting leader at a company scaling faster than its compliance can keep up. That skews heavily toward SaaS and the current wave of AI companies, where revenue can cross borders long before a tax team exists.
Anrok is B2B SaaS. It sells subscription tax-compliance software - typically priced by transaction volume, jurisdictions and the mix of services a customer needs, from calculation through full filing and remittance. The strategy is to be always-on infrastructure rather than a point tool a team logs into at quarter-end.
Michelle Valentine and Kannan Goundan, both formerly at Airtable, start Anrok.
Early funding to build the tax monitoring and calculation platform.
Expands filing, remittance and integrations for SaaS finance teams.
Scales the global compliance platform and customer base.
Spark Capital leads a round pushing total funding past $100M at a reported ~$525M valuation.
Launches a native global platform, new integrations and its first AI document-extraction feature.
Spark Capital led the 2025 Series C, joined by Sapphire Ventures and returning backers Sequoia Capital, Khosla Ventures and Index Ventures.
Michelle Valentine - co-founder, formerly Airtable and Index Ventures. Kannan Goundan - co-founder and CTO, an engineer previously at Airtable and Dropbox. Brad Silicani leads the company as CEO and hosts its "Call a Controller" series for finance operators.
The indirect-tax software market is long-established, dominated by broad players such as Avalara, Vertex and Sovos, with Stripe Tax and TaxJar serving the payments-and-commerce edge and newer automation entrants like Numeral pushing in. These tools cover every industry, from restaurants to manufacturers.
Anrok's wager is that software and digital goods are taxed differently enough - and are growing fast enough - to justify a platform built only for them. By pairing software-specific taxability with full-service filing, it aims to sit closer to the modern finance stack than the incumbents. Its investors, and its roster of AI customers, suggest the bet is landing.
Sources: Anrok, Spark Capital, Sacra, Crunchbase, Bloomberg, Tech Startups and BusinessWire. Funding, valuation and revenue figures are drawn from public reporting and company statements; some are third-party estimates and are marked approximate.