Numeral, a company designed to simplify sales tax compliance, has recently secured $35 million in Series B funding. This funding round was led by Mayfield, with the enthusiastic backing of several prominent investors, including Benchmark, Uncork Capital, Y Combinator, and Mantis. This announcement comes at a notable time for Numeral, which has experienced rapid growth over the past year. The company has achieved impressive milestones, processing over $5 billion in transaction volume and filing an impressive 150,000 sales tax returns. Additionally, Numeral has recorded a remarkable 3.5 times increase in revenue compared to the previous year.
Sales tax compliance is increasingly becoming one of the most complicated and costly challenges that businesses face today. The complexity arises from the fact that in the United States alone, there are more than 11,000 different tax jurisdictions. Each of these jurisdictions has its own set of rules, deadlines, and definitions, which makes navigating this landscape especially difficult. To give you an idea of the scale of the challenge, there have already been over 400 changes to sales tax rates in just the first half of 2025. This number reflects a significant increase over previous years, posing an even greater challenge for businesses. Companies of all sizes, even those that are not very large, must manage registration and filing obligations in more than 30 states, juggling numerous deadlines for monthly, quarterly, and annual filings.
This continuous change in regulations forces many businesses to spend tens of thousands of dollars each year. They invest in compliance tools, engage in audits, and hire tax specialists just to stay on top of their obligations. This is where Numeral steps in to provide a much-needed solution. The platform is fully automated and designed to handle every aspect of the sales tax lifecycle. It takes care of everything from detecting nexus—where a business has a tax obligation—to state registration, filing returns, remitting payments, and managing exemption certificates. Numeral also offers a guarantee of error-free filing, provides exceptional customer support, and maintains straightforward pricing, making it easier for businesses to meet their tax compliance needs.
Founded in early 2023 by Sam Ross, who serves as the CEO, and Matt DuVall, the CTO and a former engineer at Stripe and Notion, Numeral has quickly gained traction in the market. The company currently serves over 2,000 e-commerce and Software as a Service (SaaS) brands, including well-known names like Ridge, Eight Sleep, Graza, Grüns, and Manus. One of the standout features of Numeral is its ability to support compliance across more than 60 countries using advanced artificial intelligence workflows and backed by expert services.
The recent Series B funding builds on previous financing efforts, which include a $4 million seed funding round from Y Combinator and Uncork Capital, as well as an $18 million Series A round led by Benchmark Capital earlier this year. This brings Numeral’s total funding to an impressive $57 million. Such significant financial backing will enable the company to continue its mission of creating innovative products, expanding its global footprint, and enhancing its automation capabilities powered by artificial intelligence.
KEY QUOTES:
“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.”
Sri Pangulur, Partner at Mayfield
“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.”
Sam Ross, co-founder and CEO of Numeral
“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.”
Avi Golan, CFO of Ridge
