Numeral, a San Francisco, CA-based AI-powered sales tax compliance platform, has raised $35 million in a Series B funding round, bringing its total funding to $57 million. 

Investors 

The round was led by Mayfield, with participation from Benchmark, Uncork Capital, Y Combinator, and Mantis. 

Mayfield is an early-stage venture capital firm with a people-first philosophy and $3 billion under management. The firm specializes in early- and growth-stage investments and has invested in over 550 companies, resulting in 120 IPOs and more than 225 acquisitions. Mayfield’s focus is on early-stage investments, primarily in the seed, Series A, and Series B rounds. 

Numeral Use of Funds 

The company will use the funding to advance product innovation, expand globally, and strengthen its AI-driven automation capabilities. 

About Numeral 

Founded in early 2023 by Sam Ross and Matt DuVall, Numeral is a sales tax automation platform for e-commerce and SaaS companies. It simplifies the full lifecycle of sales tax compliance for e-commerce and SaaS companies—from nexus tracking and registrations to filing, remittance, exemption certificate management, and virtual mailbox services. The company serves over 2,000 e-commerce and SaaS brands, including Ridge, Eight Sleep, Graza, Grüns, and Manus. Numeral supports compliance across 60+ countries with AI workflows and expert-backed services. 

Funding Details 

Company: Numeral 

Raised: $35.0M 

Round: Series B 

Funding Date: September 2025 

Lead Investor: Mayfield 

Additional Investors: Benchmark, Uncork Capital, Y Combinator, Mantis 

Company Website: https://www.numeralhq.com/  

Software Category: Sales Tax Compliance / Fintech SaaS 

Source: https://www.businesswire.com/news/home/20250918544776/en