San Francisco-based Numeral has secured a $35M Series B round at a $350M valuation, just six months after closing its Series A.
The round was led by Mayfield, with participation from Benchmark, Uncork Capital, Y Combinator, and Mantis (the VC firm launched by The Chainsmokers).
Tackling sales tax complexity with AI
Numeral was founded by Sam Ross, a former Airbnb PM who experienced firsthand the pain of handling sales tax while running his own e-commerce businesses. After the U.S. Supreme Court’s 2018 ruling requiring companies to collect taxes in all states where they had customers, compliance became a nightmare for fast-scaling online brands.
Numeral’s AI-powered platform automates every aspect of sales tax: tracking 11,000+ jurisdictions, processing tax mail, and filing returns. The system even accounts for odd tax rules—like New York bagels being exempt when whole but taxable when sliced.
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Growth and adoption
Over the past year, Numeral grew revenues 3.5x and now counts more than 2,000 customers, including EightSleep, Graza Olive Oil, and Manus. Its global reach also sets it apart: the startup files taxes in markets such as Tanzania and Kenya, where businesses would typically need costly CPA firms.
Market positioning
The sales tax automation space includes startups like Anrok and Zamp, alongside incumbent Avalara, which is preparing to go public again. Numeral’s differentiator lies in its AI-first approach and global coverage.
CEO Sam Ross says the mission is simple:
“We’ve built a system that acts like a human tax accountant but with AI scale. For founders and finance teams, that means turning a regulatory headache into an automated background process.”
