Numeral vs Zamp
No leader: the top candidate Numeral has only 0.20 confidence (low), below the 0.35 needed to declare a winner. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.
Capabilities
Feature-by-feature on the axes that matter for tax software. “-” means undocumented, not absent.
What each one is
The product in its own terms, so the numbers below have context.
Numeral
A comprehensive platform that handles end-to-end sales tax and global VAT/GST compliance. It combines automated tax rate calculations, jurisdiction monitoring, return filing, and exemption certificate management with expert tax support and a performance guarantee for timely filing.
Zamp
A sales tax compliance system for US and Canadian businesses that automates calculations, filings, registrations, and provides dedicated expert support.
Pricing
List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.
Numeral
Free monitoring. Professional: $75/filing + $150/registration per state. Enterprise and International tiers available; book demo for detailed pricing.
- MonitoringFree
- Connect stores and billing platforms
- Automatic physical and economic nexus monitoring
- Nexus crossing alerts across US jurisdictions
- Historical liability audit
- Professional$75 per filing + $150 per state registration. Month-to-month billing.
- Everything in Monitoring
- State registrations and filings
- Autofile and Autoregister capabilities
- Virtual mailbox for tax mail monitoring
- AI product classification
- +4 more
- EnterpriseContact sales
- Everything in Professional
- Global coverage in 70+ countries
- Tax calculation engine and API access
- Tax lawyer consultation services
- Advanced reporting and analytics
- +4 more
- InternationalFree for first 50 certificates; custom pricing thereafter
- Coverage across US, UK, Canada, EMEA, APAC, and LATAM
- Global registrations and filings
- Automated remittance across jurisdictions
- Global tax expert support
- Rooftop-accurate tax calculations (140ms p95 latency)
- +4 more
Zamp
Free tier with API sandbox and consultation. Paid plans available via custom quote.
- FreeFree
- One-time nexus analysis
- Jurisdiction-by-jurisdiction risk summary
- Product taxability review
- Taxability classification by product/service
- State and country-specific rule application
- +2 more
- U.S.Contact sales
- Rooftop-accurate tax calculations
- Real-time address validation
- Product-specific taxability rules
- Proactive nexus monitoring and registration
- Automated state registrations
- +6 more
- GlobalContact sales
- All U.S. plan features
- Canada GST/HST/PST/QST calculations
- Federal and provincial rate determination
- Buyer location validation
- Digital vs. physical product tax logic
- +5 more
Platform & deployment
Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.
Integrations
What each product connects to. Counts come from the vendor's own integration directory where one exists.
- Shopify
- Stripe
- Amazon
- QuickBooks
- NetSuite
Numeral
- Acumatica
- Microsoft Business Central
- Salesforce
Zamp
- WooCommerce
- Chargebee
- Checkout Champ
- eBay
- Etsy
- BigCommerce
- Rillet
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.