# Thomson Reuters ONESOURCE: how AI models rank it, September 2026

Finance AI Recommendation Index, September 2026 Edition. Named in 29 judge labels across 3 categories by 10 of 12 models. Page: https://finance-ai-index.com/vendors/thomson-reuters-onesource/

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| Corporate tax provision | 10% | 3 | 16% | 19 |
| Sales tax automation | 0% | 18 | 17% | 6 |
| Global e-invoicing compliance | 0% | 33 | 0% | 4 |

## What the models said for it

- "Choose Thomson Reuters ONESOURCE if you are a larger, audited mid-market C-Corp with multiple subsidiaries" (Gemini 3.5 Flash, Corporate tax provision)
- "I'd recommend Thomson Reuters ONESOURCE as the top choice for income tax compliance software" (Grok 4.1 Fast, Corporate tax provision)
- "Corporate income tax (direct tax) | Thomson Reuters ONESOURCE or Vertex" (GLM 4.7 FlashX, Corporate tax provision)
- "I'd suggest starting with Thomson Reuters ONESOURCE" (Kimi K2, Corporate tax provision)

## And against it

- "Enterprise Options to AVOID on a Limited Budget | Thomson Reuters ONESOURCE | $200K–$2M+/year" (Kimi K2, Corporate tax provision)
- "Avoid: Longview, ONESOURCE, Workiva, Oracle Tax Reporting, and Corptax." (DeepSeek V4 Flash, Corporate tax provision)
- "cannot justify the six-figure price tag of enterprise suites like Bloomberg or Thomson Reuters ONESOURCE" (Qwen 3.7 Flash, Corporate tax provision)
- "Overkill for most mid-sized firms." (DeepSeek V4 Flash, Sales tax automation)

## Record

- Method: https://finance-ai-index.com/methodology/
- Raw judge labels and full responses: https://finance-ai-index.com/data/
- License: CC BY 4.0. Cite as Finance AI Recommendation Index, September 2026 Edition, finance-ai-index.com.