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

Finance AI Recommendation Index, September 2026 Edition. Named in 33 judge labels across 1 categories by 12 of 12 models. Page: https://finance-ai-index.com/vendors/thomson-reuters-onesource-tax-provision/

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| Corporate tax provision | 26% | 1 | 15% | 33 |

## What the models said for it

- "For most mid-market B2B companies, ONESOURCE Tax Provision is the safest choice due to its balance of power, audit readiness, and scalability." (Kimi K2, Corporate tax provision)
- "Leading solution for automating ASC 740 tax provision calculations, ETR analysis, and financial disclosures with robust integrations" (Claude Haiku 4.5, Corporate tax provision)
- "OTP is the market-heavyweight software.... Best For: Large, multinational corporations seeking an end-to-end global tax ecosystem." (Gemini 3.5 Flash, Corporate tax provision)
- "I'd recommend starting with ONESOURCE or Bloomberg Tax Provision as they specifically target mid-market needs" (MiniMax M2.5, Corporate tax provision)

## And against it

- "mid-market enterprises or lean tax teams (fewer than 5–10 people) should approach them with caution" (Gemini 3.5 Flash, Corporate tax provision)
- "these systems may represent more cost, complexity, and implementation friction than you need" (Gemini 3.5 Flash, Corporate tax provision)
- "routinely costs between $50,000 and $100,000+ annually in licensing and implementation fees" (Gemini 3.5 Flash, Corporate tax provision)
- "strong for multinational provision and compliance, but not presented as a low-cost choice" (Perplexity Sonar, Corporate tax provision)

## 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.