Numeral raises $35m to expand AI-powered tax automation

September 19, 2025

Numeral, an AI-powered sales tax compliance platform serving e-commerce and SaaS companies, has raised fresh capital to expand its automation-driven services.

The company has secured $35m in a Series B round led by Mayfield, with additional investment from Benchmark, Uncork Capital, Y Combinator, and Mantis. Together with previous rounds, Numeral has now raised a total of $57m.

Founded in 2023 by Sam Ross, CEO, and Matt DuVall, CTO, who previously worked at Stripe and Notion, Numeral helps businesses navigate the highly complex and fast-changing world of sales tax. The company’s platform automates every stage of the compliance process, from nexus detection and registration through to filing, remittance, and exemption certificate management. It offers an error-free filing guarantee, white-glove support, and simplified pricing.

The new funding will be used to expand Numeral’s AI-driven automation capabilities, support product innovation, and accelerate global expansion. The firm currently serves more than 2,000 brands, including Ridge, Eight Sleep, Graza, Grüns, and Manus, and supports compliance in over 60 countries.

Sales tax remains a costly and complicated burden for businesses. In the United States, there are more than 11,000 tax jurisdictions, each with unique rules and deadlines. In the first half of 2025 alone, over 400 rate changes were recorded. Even modestly sized companies are often required to register and file in dozens of states, juggling monthly, quarterly, and annual filings.

Mayfield partner Sri Pangulur said, “Numeral is transforming one of the most painful and error-prone functions in finance—sales tax compliance—by putting it on autopilot. Their AI-first platform eliminates the complexity of managing thousands of constantly shifting tax jurisdictions, enabling modern e-commerce and SaaS businesses to scale with confidence. We’re proud to lead their Series B and back their mission to become the intelligent system of record for global sales tax.”

Numeral CEO Sam Ross said, “As operators, we lived the pain of sales tax firsthand: hours lost, filings missed, and constant second-guessing. We built Numeral to eliminate that friction entirely. This funding allows us to keep pushing the boundaries of what automation can do, so finance teams can focus on driving the business forward, not deciphering tax codes.”

Ridge CFO Avi Golan said, “Kudos to the Numeral team. They’ve built an incredible platform and keep Ridge compliant across the country. It’s been a breath of fresh air, and I can’t believe we didn’t migrate sooner.”