# Tax calculation & compliance compared head to head (slim) > 45 head-to-head comparisons of sales tax and VAT calculation APIs for AI agents, grouped by the job each pair shares, with benchmark scores for both sides. - Full: https://www.anchorterminal.com/compare/tax/index.md (~1,550 tokens) · this version ~1,480 tokens · JSON https://www.anchorterminal.com/compare/tax/index.json · canonical https://www.anchorterminal.com/compare/tax/ - Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08 - Ranked table: https://www.anchorterminal.com/categories/tax.md - Shortlist and picks by need: https://www.anchorterminal.com/best/tax/index.md ## Ranked 1. [Avalara AvaTax](https://www.anchorterminal.com/tools/avalara.md) B 68.8 2. [Anrok](https://www.anchorterminal.com/tools/anrok.md) C 61.6 3. [Kintsugi](https://www.anchorterminal.com/tools/kintsugi.md) C 60.7 4. [Quaderno](https://www.anchorterminal.com/tools/quaderno.md) C 59.5 5. [TaxJar](https://www.anchorterminal.com/tools/taxjar.md) C 57.6 6. [TaxCloud](https://www.anchorterminal.com/tools/taxcloud.md) C 57.4 7. [Vertex O Series](https://www.anchorterminal.com/tools/vertex-tax.md) C 54.7 8. [Fonoa](https://www.anchorterminal.com/tools/fonoa.md) D 51.7 9. [Zamp](https://www.anchorterminal.com/tools/zamp.md) D 49.5 10. [Numeral](https://www.anchorterminal.com/tools/numeral.md) D 49.3 ## Tax calculation - [Anrok vs Avalara AvaTax](https://www.anchorterminal.com/compare/anrok-vs-avalara.md): C 61.6 vs B 68.8 - [Anrok vs Fonoa](https://www.anchorterminal.com/compare/anrok-vs-fonoa.md): C 61.6 vs D 51.7 - [Anrok vs Kintsugi](https://www.anchorterminal.com/compare/anrok-vs-kintsugi.md): C 61.6 vs C 60.7 - [Anrok vs Numeral](https://www.anchorterminal.com/compare/anrok-vs-numeral.md): C 61.6 vs D 49.3 - [Anrok vs Quaderno](https://www.anchorterminal.com/compare/anrok-vs-quaderno.md): C 61.6 vs C 59.5 - [Anrok vs TaxCloud](https://www.anchorterminal.com/compare/anrok-vs-taxcloud.md): C 61.6 vs C 57.4 - [Anrok vs TaxJar](https://www.anchorterminal.com/compare/anrok-vs-taxjar.md): C 61.6 vs C 57.6 - [Anrok vs Vertex O Series](https://www.anchorterminal.com/compare/anrok-vs-vertex-tax.md): C 61.6 vs C 54.7 - [Anrok vs Zamp](https://www.anchorterminal.com/compare/anrok-vs-zamp.md): C 61.6 vs D 49.5 - [Avalara AvaTax vs Fonoa](https://www.anchorterminal.com/compare/avalara-vs-fonoa.md): B 68.8 vs D 51.7 - [Avalara AvaTax vs Kintsugi](https://www.anchorterminal.com/compare/avalara-vs-kintsugi.md): B 68.8 vs C 60.7 - [Avalara AvaTax vs Numeral](https://www.anchorterminal.com/compare/avalara-vs-numeral.md): B 68.8 vs D 49.3 - [Avalara AvaTax vs Quaderno](https://www.anchorterminal.com/compare/avalara-vs-quaderno.md): B 68.8 vs C 59.5 - [Avalara AvaTax vs TaxCloud](https://www.anchorterminal.com/compare/avalara-vs-taxcloud.md): B 68.8 vs C 57.4 - [Avalara AvaTax vs TaxJar](https://www.anchorterminal.com/compare/avalara-vs-taxjar.md): B 68.8 vs C 57.6 - [Avalara AvaTax vs Vertex O Series](https://www.anchorterminal.com/compare/avalara-vs-vertex-tax.md): B 68.8 vs C 54.7 - [Avalara AvaTax vs Zamp](https://www.anchorterminal.com/compare/avalara-vs-zamp.md): B 68.8 vs D 49.5 - [Fonoa vs Kintsugi](https://www.anchorterminal.com/compare/fonoa-vs-kintsugi.md): D 51.7 vs C 60.7 - [Fonoa vs Numeral](https://www.anchorterminal.com/compare/fonoa-vs-numeral.md): D 51.7 vs D 49.3 - [Fonoa vs Quaderno](https://www.anchorterminal.com/compare/fonoa-vs-quaderno.md): D 51.7 vs C 59.5 - [Fonoa vs TaxCloud](https://www.anchorterminal.com/compare/fonoa-vs-taxcloud.md): D 51.7 vs C 57.4 - [Fonoa vs TaxJar](https://www.anchorterminal.com/compare/fonoa-vs-taxjar.md): D 51.7 vs C 57.6 - [Fonoa vs Vertex O Series](https://www.anchorterminal.com/compare/fonoa-vs-vertex-tax.md): D 51.7 vs C 54.7 - [Fonoa vs Zamp](https://www.anchorterminal.com/compare/fonoa-vs-zamp.md): D 51.7 vs D 49.5 - [Kintsugi vs Numeral](https://www.anchorterminal.com/compare/kintsugi-vs-numeral.md): C 60.7 vs D 49.3 - [Kintsugi vs Quaderno](https://www.anchorterminal.com/compare/kintsugi-vs-quaderno.md): C 60.7 vs C 59.5 - [Kintsugi vs TaxCloud](https://www.anchorterminal.com/compare/kintsugi-vs-taxcloud.md): C 60.7 vs C 57.4 - [Kintsugi vs TaxJar](https://www.anchorterminal.com/compare/kintsugi-vs-taxjar.md): C 60.7 vs C 57.6 - [Kintsugi vs Vertex O Series](https://www.anchorterminal.com/compare/kintsugi-vs-vertex-tax.md): C 60.7 vs C 54.7 - [Kintsugi vs Zamp](https://www.anchorterminal.com/compare/kintsugi-vs-zamp.md): C 60.7 vs D 49.5 - [Numeral vs Quaderno](https://www.anchorterminal.com/compare/numeral-vs-quaderno.md): D 49.3 vs C 59.5 - [Numeral vs TaxCloud](https://www.anchorterminal.com/compare/numeral-vs-taxcloud.md): D 49.3 vs C 57.4 - [Numeral vs TaxJar](https://www.anchorterminal.com/compare/numeral-vs-taxjar.md): D 49.3 vs C 57.6 - [Numeral vs Vertex O Series](https://www.anchorterminal.com/compare/numeral-vs-vertex-tax.md): D 49.3 vs C 54.7 - [Numeral vs Zamp](https://www.anchorterminal.com/compare/numeral-vs-zamp.md): D 49.3 vs D 49.5 - [Quaderno vs TaxCloud](https://www.anchorterminal.com/compare/quaderno-vs-taxcloud.md): C 59.5 vs C 57.4 - [Quaderno vs TaxJar](https://www.anchorterminal.com/compare/quaderno-vs-taxjar.md): C 59.5 vs C 57.6 - [Quaderno vs Vertex O Series](https://www.anchorterminal.com/compare/quaderno-vs-vertex-tax.md): C 59.5 vs C 54.7 - [Quaderno vs Zamp](https://www.anchorterminal.com/compare/quaderno-vs-zamp.md): C 59.5 vs D 49.5 - [TaxCloud vs TaxJar](https://www.anchorterminal.com/compare/taxcloud-vs-taxjar.md): C 57.4 vs C 57.6 - [TaxCloud vs Vertex O Series](https://www.anchorterminal.com/compare/taxcloud-vs-vertex-tax.md): C 57.4 vs C 54.7 - [TaxCloud vs Zamp](https://www.anchorterminal.com/compare/taxcloud-vs-zamp.md): C 57.4 vs D 49.5 - [TaxJar vs Vertex O Series](https://www.anchorterminal.com/compare/taxjar-vs-vertex-tax.md): C 57.6 vs C 54.7 - [TaxJar vs Zamp](https://www.anchorterminal.com/compare/taxjar-vs-zamp.md): C 57.6 vs D 49.5 - [Vertex O Series vs Zamp](https://www.anchorterminal.com/compare/vertex-tax-vs-zamp.md): C 54.7 vs D 49.5