Best Sigma Files Alternatives in 2026
Updated
20 tools from tax compliance software ranked against Sigma Files on the same published basis.
- 1Sigma Files vs LOVAT
- 2Sigma Files vs ONESOURCE Determination
- 3Sigma Files vs Zamp
- 4Sigma Files vs GSTHero
- 5Sigma Files vs Avalara AvaTax
- 6Sigma Files vs Taxmo
- 7Sigma Files vs CCH SureTax
- 8Sigma Files vs Alphatax
- 9Sigma Files vs TaxBandits
- 10Sigma Files vs Aatrix eFile
- 11Sigma Files vs ONESOURCE Indirect Compliance
- 12Sigma Files vs Vertex Cloud Indirect Tax
- 13Sigma Files vs Taxually
- 14Sigma Files vs Tax Series
- 15Sigma Files vs UFile
- 16Sigma Files vs Stripe Tax
- 17Sigma Files vs Sovos VAT Compliance
- 18Sigma Files vs Vertex VAT Compliance
- 19Sigma Files vs Kintsugi
- 20Sigma Files vs Sovos Sales & Use Tax
Sigma Files alternatives compared
| # | Tool | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | LOVAT | 8.9 | Free plan | €27/mo | Android, API, iOS, Web |
| 2 | ONESOURCE Determination | 8.1 | API, Linux, self-hosted, Web, Windows | ||
| 3 | Zamp | 8.1 | Free plan | Free | API |
| 4 | GSTHero | 8.1 | API, Web, Windows | ||
| 5 | Avalara AvaTax | 8.0 | No | $58.25/mo | API, Web |
| 6 | Taxmo | 8.0 | Free plan | £9.99/mo | Android, API, iOS, Web |
| 7 | CCH SureTax | 7.9 | API | ||
| 8 | Alphatax | 7.9 | API, Web, Windows | ||
| 9 | TaxBandits | 7.8 | $19/mo | Android, API, Browser, iOS, Web | |
| 10 | Aatrix eFile | 7.8 | $9.92/mo | Mac, Web, Windows | |
| 11 | ONESOURCE Indirect Compliance | 7.7 | API, Web | ||
| 12 | Vertex Cloud Indirect Tax | 7.7 | API, Web | ||
| 13 | Taxually | 7.7 | €12.50/mo | API, Web | |
| 14 | Tax Series | 7.7 | API, Web | ||
| 15 | UFile | 7.7 | Free plan | Free | Web, Windows |
| 16 | Stripe Tax | 7.6 | No | API | |
| 17 | Sovos VAT Compliance | 7.6 | API, Web | ||
| 18 | Vertex VAT Compliance | 7.6 | API, Web | ||
| 19 | Kintsugi | 7.6 | Free plan | $75/mo | API |
| 20 | Sovos Sales & Use Tax | 7.5 | API, Web |
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Questions about Sigma Files alternatives
What is the best alternative to Sigma Files?
LOVAT, number 1 in tax compliance software with a score of 8.9 out of 10. The others here: ONESOURCE Determination, Zamp, GSTHero and 16 more.
What is the best free alternative to Sigma Files?
LOVAT is the best-ranked alternative with a free plan. 5 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.