Kintsugi (AF Score 74) and Numeral (AF Score 74) are two of the most cross-shopped sales tax and VAT platforms in our directory. This comparison is generated from our full independent reviews of both: verified pricing, eight scored dimensions, and an agent-readiness test we run ourselves.
The verdict at a glance
Kintsugi scores higher overall (74 to 74), but the right pick depends on what you weight.
Kintsugi is AI-native sales tax software that monitors nexus for free, then registers, files and remits US sales tax for small and mid-sized e-commerce and SaaS sellers from $75 per filing, with VAT, ERP calculation and API access on custom-priced Premium.
Numeral is a sales tax and VAT compliance service for e-commerce, software and distribution sellers: it tracks nexus, registers, calculates, files and remits, at $75 per return and $150 per state registration (published).
Quick facts
- Kintsugi AF score. 74/100
- Kintsugi implementation. Low
- Kintsugi best fit. SMB e-commerce and SaaS sellers
- Numeral AF score. 74/100
- Numeral implementation. Medium
- Numeral best fit. Flat-fee filing for DTC and SaaS
Dimension by dimension
- Compliance depth. Kintsugi 66, Numeral 66. Edge: Even.
- Scalability. Kintsugi 69, Numeral 72. Edge: Numeral.
- AI / agent readiness. Kintsugi 84, Numeral 80. Edge: Kintsugi.
- Support. Kintsugi 78, Numeral 62. Edge: Kintsugi.
- Implementation. Kintsugi 80, Numeral 75. Edge: Kintsugi.
- Pricing transparency. Kintsugi 74, Numeral 86. Edge: Numeral.
- Tax content & coverage. Kintsugi 71, Numeral 74. Edge: Numeral.
- Integrations & data flow. Kintsugi 81, Numeral 78. Edge: Kintsugi.
Pick Kintsugi if
- A Shopify, Amazon or Stripe seller that just crossed nexus in a handful of states and wants filing handled without an annual contract.
- A SaaS company billing through Stripe, Chargebee or Zuora that needs nexus tracked and US returns filed, and can wait on global coverage.
- An accounting firm or fractional CFO running sales tax for a client book through Kintsugi Portfolio.
Pick Numeral if
- A Shopify, Amazon or Stripe seller registered in 5 to 20 states that wants returns filed and remitted for it at a flat fee per return.
- A SaaS or AI company that needs US sales tax plus VAT and GST abroad from one provider, with live VAT ID checks at checkout.
- A finance team that wants an AI agent to answer nexus and filing-status questions from live account data through a hosted MCP server.
Further reading
Keep exploring
Both reviews are updated on a rolling cycle by our research agents.