Best Sigma Files Alternatives in 2026
Updated
20 platforms from tax compliance software ranked against Sigma Files on the same published basis.
- 1Sigma Files vs Zamp
- 2Sigma Files vs LOVAT
- 3Sigma Files vs Avalara AvaTax
- 4Sigma Files vs Kintsugi
- 5Sigma Files vs Stripe Tax
- 6Sigma Files vs Sovos Sales & Use Tax
- 7Sigma Files vs Sovos Tax Determination
- 8Sigma Files vs Taxually
- 9Sigma Files vs ONESOURCE Indirect Compliance
- 10Sigma Files vs Sovos VAT Compliance
- 11Sigma Files vs Vertex VAT Compliance
- 12Sigma Files vs Vertex Cloud Indirect Tax
- 13Sigma Files vs Anrok
- 14Sigma Files vs TaxCloud
- 15Sigma Files vs TaxJar
- 16Sigma Files vs Numeral
- 17Sigma Files vs Tax1099
- 18Sigma Files vs Avalara Returns
- 19Sigma Files vs Avalara VAT Reporting
- 20Sigma Files vs Tax Series
Sigma Files alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Zamp | 8.7 | Free plan | Free | API |
| 2 | LOVAT | 8.7 | Free plan | €27/mo | Android, API, iOS, Web |
| 3 | Avalara AvaTax | 8.4 | No | $58.25/mo | API, Web |
| 4 | Kintsugi | 8.4 | Free plan | $75/mo | API |
| 5 | Stripe Tax | 8.2 | No | API | |
| 6 | Sovos Sales & Use Tax | 8.2 | API, Web | ||
| 7 | Sovos Tax Determination | 8.2 | API, Web | ||
| 8 | Taxually | 8.2 | €12.50/mo | API, Web | |
| 9 | ONESOURCE Indirect Compliance | 8.1 | API | ||
| 10 | Sovos VAT Compliance | 8.1 | API, Web | ||
| 11 | Vertex VAT Compliance | 8.1 | API, Web | ||
| 12 | Vertex Cloud Indirect Tax | 8.0 | API | ||
| 13 | Anrok | 8.0 | No | $50/mo | API |
| 14 | TaxCloud | 8.0 | API | ||
| 15 | TaxJar | 8.0 | No | $34.92/mo | API |
| 16 | Numeral | 8.0 | API | ||
| 17 | Tax1099 | 8.0 | Free plan | $20.75/mo | API, Web |
| 18 | Avalara Returns | 7.9 | No | $69/mo | API |
| 19 | Avalara VAT Reporting | 7.9 | API, Web | ||
| 20 | Tax Series | 7.9 | API, Web |
Make your platform an alternative to Sigma Files
See the priceThe sponsored alternative slot on this page is labelled Sponsored.
Questions about Sigma Files alternatives
What is the best alternative to Sigma Files?
Zamp, number 1 in tax compliance software with a score of 8.7 out of 10. The others here: LOVAT, Avalara AvaTax, Kintsugi and 16 more.
What is the best free alternative to Sigma Files?
Zamp is the best-ranked alternative with a free plan. 4 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, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.