# CSC Corptax: how AI models rank it, October 2026

Finance AI Recommendation Index, October 2026 Edition. Named in 26 judge labels across 1 categories by 14 of 14 models. Page: https://finance-ai-index.com/vendors/csc-corptax/

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| Corporate tax provision | 0% | 89 | 42% | 26 |

## What the models said for it

- "CSC Corptax is purpose-built for US corporate income tax provision / compliance and is frequently short-listed against ONESOURCE" (Muse Glimmer 30B, Corporate tax provision)
- "Best for: Mid-to-large companies that want a highly automated, database-driven "single source of truth."" (Gemini 3.5 Flash, Corporate tax provision)
- "Corptax is a strong alternative if your priority is centralizing and automating data collection" (GPT-6 Luna, Corporate tax provision)
- "Best For: Large US-centric enterprises with vast multi-entity, multi-state filing footprints." (Gemini 3.5 Flash, Corporate tax provision)

## And against it

- "explicitly says to avoid or be cautious about Longview, ONESOURCE, Workiva, Oracle Tax Reporting, and Corptax" (Perplexity Sonar, Corporate tax provision)
- "Another enterprise-level tool that is not suitable for small businesses due to its complexity and cost." (Mistral Small, Corporate tax provision)
- ""Avoid ONESOURCE and Corptax unless you have a Fortune-500-style tax department."" (Muse Glimmer 30B, Corporate tax provision)
- "avoid or be cautious about are: ... 2. Corptax" (Llama 4 Maverick, Corporate tax provision)

## Movement since September 2026

Floor: 10 points of share, measured on the calibration repeat. A larger change is movement; a smaller one is noise.

- Corporate tax provision: 0% to 0%, ±0. Inside the floor by 10 points · rank 22 → 89 of 102.

## In its own words

What CSC Corptax's own pages state, read 2026-10-05. Stated by the vendor, not checked by the index.

- Positioning: delivers trusted enterprise tax solutions for U.S. and global compliance, provision, and planning (https://www.cscglobal.com/service/corptax/)
- For: enterprise tax departments (https://www.cscglobal.com/service/corptax/)
- Customers named: Farmers Insurance Group, Curran Group, Inc., Siemens Corporation, Gartner, Inc., Conoco Phillips, Sherwin Williams, New York Life, Kiewit

## 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, October 2026 Edition, finance-ai-index.com.