Numeral vs Zamp
Numeral
Ecommerce brands, venture-backed startups, software companies, and distribution and manufacturing businesses
2022; San Francisco, US
Zamp
Growing small to mid-size digital businesses (e-commerce, SaaS, digital services), plus accounting firms serving clients on a referral or white-label basis
Founding year not published; Miami, Florida, US
Numeral and Zamp both take US sales tax compliance off a company's hands, from nexus monitoring to registrations, filings, remittance and tax notices.
Numeral, founded in San Francisco in 2022, has 3,500+ customers and raised a US$100m Series C in September 2026; Zamp, based in Miami, serves 1,200+ finance and accounting teams and over 120 accounting firms, with done-for-you and done-with-you options.
Numeral vs Zamp: side by side
“Not published” means the vendor does not state it.
| Numeral | Zamp | |
|---|---|---|
| What it does | Sales tax, VAT and GST compliance done for the customer: nexus monitoring, registrations, tax calculation, filings and remittance, exemption certificates and tax notice handling, with human support | Managed sales tax compliance: software plus tax specialists handling nexus tracking, registrations, rooftop-level calculation, filing, remittance and notices |
| Best for | Ecommerce brands, venture-backed startups, software companies, and distribution and manufacturing businesses | Growing small to mid-size digital businesses (e-commerce, SaaS, digital services), plus accounting firms serving clients on a referral or white-label basis |
| Founded and HQ | 2022; San Francisco, US | Founding year not published; Miami, Florida, US |
| Ownership and funding | Venture-backed; US$100m Series C (Sep 2026) led by Insight Partners with Salesforce Ventures; US$157m raised in total | Private; US$30m raised in total, latest round led by Acrew Capital with Thomson Reuters Ventures (announced Apr 2026) |
| Customers or users | 3,500+ customers; Brex, Fishwife and Character.ai quoted on the site | 1,200+ finance and accounting teams and over 120 accounting firms; named customers include Crumbl, Oats Overnight, David Protein, Cult Gaia, Tushy, Handwrytten; firms include Withum and Anchin |
| Pricing | Free nexus monitoring; Professional US$75 per filing and US$150 per state registration, month to month; Enterprise custom | Free plan (nexus and exposure assessment, API sandbox); paid U.S. and U.S. + Canada plans scoped per customer, no list prices, no per-transaction fees |
| Deployment and markets | All US states and jurisdictions; sales tax, VAT and GST in 90+ countries on Enterprise | Cloud platform with managed service; US (50+ states and territories, 13,000+ jurisdictions) and Canada (GST/HST/PST/QST) |
Main differences
Numeral publishes per-filing prices, US$75 per filing and US$150 per state registration; Zamp scopes paid plans to each customer and includes state registrations in the annual contract.
Numeral covers all US states and sales tax, VAT and GST in 90+ countries on Enterprise; Zamp covers the US and Canada.
Zamp sells through over 120 accounting firms on a referral or white-label basis; Numeral serves ecommerce brands, startups, software companies and manufacturers directly.
Numeral pays penalties and interest if a filing is late; Zamp pays penalties or interest caused by a Zamp-managed calculation or filing.
Which to choose
Choose Numeral if
- You want per-filing prices month to month, or VAT and GST outside North America
Choose Zamp if
- You want an annual contract with registrations included, a done-with-you review option, or a service your accounting firm can white-label
Compare further
Common questions
What is the difference between Numeral and Zamp?+
Numeral does sales tax, VAT and GST compliance for the customer: nexus monitoring, registrations, tax calculation, filings and remittance, exemption certificates and tax notice handling, with human support. Zamp is a managed sales tax service, software plus tax specialists, handling nexus tracking, registrations, rooftop-level calculation, filing, remittance and notices, either done for the customer or done with its team.
How much do Numeral and Zamp cost?+
Numeral's nexus monitoring is free; Professional costs US$75 per filing and US$150 per state registration, month to month, and Enterprise is custom. Zamp has a free plan for nexus and exposure assessment; paid plans are scoped to each customer with no per-transaction fees, and state registrations are included in the annual contract.
Do Numeral and Zamp cover penalties?+
Yes, on different terms. Numeral pays penalties and interest if a filing is late. Under the Zamp Commitment, Zamp pays penalties or interest caused by a Zamp-managed calculation or filing.
Part of Accountio’s accounting technology coverage.
