Best OpenSalesTax Alternatives in 2026
Updated
20 tools from tax engine software ranked against OpenSalesTax on the same published basis.
- 1OpenSalesTax vs Vatstack
- 2OpenSalesTax vs Zamp
- 3OpenSalesTax vs Kintsugi
- 4OpenSalesTax vs ONESOURCE Certificate Manager
- 6OpenSalesTax vs Vertex e-Invoicing
- 7OpenSalesTax vs CCH SureTax
- 8OpenSalesTax vs Sovos Tax Determination
- 9OpenSalesTax vs Avalara VAT Registration
- 10OpenSalesTax vs ONESOURCE Determination
- 11OpenSalesTax vs Stripe Tax
- 12OpenSalesTax vs Numeral
- 13OpenSalesTax vs Cbox Tax
- 14OpenSalesTax vs Quaderno
- 15OpenSalesTax vs TaxJar
- 16OpenSalesTax vs Anrok
- 17OpenSalesTax vs TaxCloud
- 18OpenSalesTax vs Sphere
- 19OpenSalesTax vs Vertex for e-Commerce
- 20OpenSalesTax vs CCH Tagetik
- 21OpenSalesTax vs Vertex VAT Compliance
OpenSalesTax alternatives compared
| # | Tool | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Vatstack | 7.0 | Free plan | $15/mo | API, Web |
| 2 | Zamp | 6.9 | Free plan | Free | API |
| 3 | Kintsugi | 6.6 | Free plan | $75/mo | API |
| 4 | ONESOURCE Certificate Manager | 6.6 | No | — | API, self-hosted, Web, Windows |
| 6 | Vertex e-Invoicing | 6.6 | No | — | API, Web |
| 7 | CCH SureTax | 6.5 | No | — | — |
| 8 | Sovos Tax Determination | 6.5 | No | — | API, Web |
| 9 | Avalara VAT Registration | 6.4 | No | — | API, Web |
| 10 | ONESOURCE Determination | 6.4 | No | — | Web |
| 11 | Stripe Tax | 6.4 | No | — | API |
| 12 | Numeral | 6.2 | No | — | API |
| 13 | Cbox Tax | 6.1 | No | — | self-hosted |
| 14 | Quaderno | 6.1 | No | — | API |
| 15 | TaxJar | 6.1 | No | $34.92/mo | API |
| 16 | Anrok | 6.0 | No | $50/mo | API |
| 17 | TaxCloud | 6.0 | No | — | API |
| 18 | Sphere | 5.9 | No | $100/mo | API |
| 19 | Vertex for e-Commerce | 5.9 | No | — | Web |
| 20 | CCH Tagetik | 5.8 | No | — | — |
| 21 | Vertex VAT Compliance | 5.8 | No | — | API |
Make your tool an alternative to OpenSalesTax
See the priceThe sponsored alternative slot on this page is labelled Sponsored.
Questions about OpenSalesTax alternatives
What is the best alternative to OpenSalesTax?
Vatstack, number 1 in tax engine software with a score of 7.0 out of 10. The others here: Zamp, Kintsugi, ONESOURCE Certificate Manager and 16 more.
What is the best free alternative to OpenSalesTax?
Vatstack is the best-ranked alternative with a free plan. 3 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.