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 LOVAT
- 2Sigma Files vs Zamp
- 3Sigma Files vs Taxmo
- 4Sigma Files vs GSTHero
- 5Sigma Files vs Alphatax
- 6Sigma Files vs CCH SureTax
- 7Sigma Files vs Kintsugi
- 8Sigma Files vs Tax Series
- 9Sigma Files vs TaxBandits
- 10Sigma Files vs ONESOURCE Determination
- 11Sigma Files vs Avalara AvaTax
- 12Sigma Files vs GSTZen
- 13Sigma Files vs ONESOURCE Indirect Compliance
- 14Sigma Files vs Corporate Taxprep
- 15Sigma Files vs UFile
- 16Sigma Files vs Vertex Cloud Indirect Tax
- 17Sigma Files vs Sovos VAT Compliance
- 18Sigma Files vs Taxually
- 19Sigma Files vs Tax1099
- 20Sigma Files vs ExpressGST
Sigma Files alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | LOVAT | 9.2 | Free plan | €27/mo | Android, API, iOS, Web |
| 2 | Zamp | 8.3 | Free plan | Free | API |
| 3 | Taxmo | 8.2 | Free plan | £9.99/mo | Android, API, iOS, Web |
| 4 | GSTHero | 8.1 | API, Web, Windows | ||
| 5 | Alphatax | 8.0 | API, Web, Windows | ||
| 6 | CCH SureTax | 7.9 | API | ||
| 7 | Kintsugi | 7.9 | Free plan | $75/mo | API |
| 8 | Tax Series | 7.9 | API, Web | ||
| 9 | TaxBandits | 7.9 | $19/mo | Android, API, Browser, iOS, Web | |
| 10 | ONESOURCE Determination | 7.8 | API, Linux, self-hosted, Web, Windows | ||
| 11 | Avalara AvaTax | 7.8 | No | $58.25/mo | API, Web |
| 12 | GSTZen | 7.8 | Free plan | Free | API, Web |
| 13 | ONESOURCE Indirect Compliance | 7.7 | API, Web | ||
| 14 | Corporate Taxprep | 7.7 | Windows | ||
| 15 | UFile | 7.7 | Free plan | Free | Web, Windows |
| 16 | Vertex Cloud Indirect Tax | 7.6 | API, Web | ||
| 17 | Sovos VAT Compliance | 7.6 | API, Web | ||
| 18 | Taxually | 7.6 | €12.50/mo | API, Web | |
| 19 | Tax1099 | 7.6 | Free plan | $20.75/mo | API, Web |
| 20 | ExpressGST | 7.6 | 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 9.2 out of 10. The others here: Zamp, Taxmo, GSTHero and 16 more.
What is the best free alternative to Sigma Files?
LOVAT is the best-ranked alternative with a free plan. 7 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on how quickly a newcomer can get going: documentation depth, a free tier or trial, and the platforms it runs on.