# Thomson Reuters ONESOURCE Income Tax: how AI models rank it, November 2026

Gane Index, November 2026 Edition. Named in 6 judge labels across 1 category by 6 of 14 models. Page: https://www.gane.ai/index/finance/vendors/thomson-reuters-onesource-income-tax

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| [Corporate tax provision](https://www.gane.ai/index/finance/tax/corporate-tax-provision/index.md) | 8% | 4 | 0% | 6 |

## What the models said for it

- "Need broad, jurisdiction-covered corporate return filing with strong content updates and audit support → ONESOURCE Income Tax." (Muse Glimmer 30B, Corporate tax provision)
- "I'd recommend starting with Bloomberg Tax Provision or Thomson Reuters ONESOURCE Income Tax for income tax compliance" (Kimi K2, Corporate tax provision)
- "My top recommendation for most mid-sized B2B companies would be Thomson Reuters ONESOURCE Income Tax" (DeepSeek V4 Flash, Corporate tax provision)
- "the strongest default recommendation is Thomson Reuters ONESOURCE Income Tax" (Perplexity Sonar, Corporate tax provision)

## By model

| Model | First choice | Alternative | Mention | Warning | Labels |
|---|---|---|---|---|---|
| Claude Haiku 4.5 | 0 | 0 | 0 | 0 | 0 |
| GPT-5.4 mini | 1 | 0 | 0 | 0 | 1 |
| Gemini 3.5 Flash | 0 | 0 | 0 | 0 | 0 |
| Perplexity Sonar | 1 | 0 | 0 | 0 | 1 |
| Grok 4.20 | 0 | 0 | 0 | 0 | 0 |
| Mistral Small | 0 | 0 | 0 | 0 | 0 |
| DeepSeek V4 Flash | 1 | 0 | 0 | 0 | 1 |
| Llama 4 Maverick | 0 | 0 | 0 | 0 | 0 |
| Qwen 3.7 Flash | 0 | 0 | 0 | 0 | 0 |
| Kimi K2 | 1 | 0 | 0 | 0 | 1 |
| GLM 4.7 FlashX | 0 | 0 | 0 | 0 | 0 |
| MiniMax M2.5 | 0 | 0 | 0 | 0 | 0 |
| GPT-6 Luna | 0 | 1 | 0 | 0 | 1 |
| Muse Glimmer 30B | 1 | 0 | 0 | 0 | 1 |

## Sources returned with these answers

The sites and pages cited by the answers that named Thomson Reuters ONESOURCE Income Tax, from 8 of the 8 answers that named it (only the models that return a source list).

### Domains cited

- tax.thomsonreuters.com: 8 (its own site)
- getapp.com: 4
- guideflow.com: 4
- avalara.com: 3
- cscglobal.com: 3
- peoplemanagingpeople.com: 3
- tax.thomsonreuters.co.uk: 3
- trustradius.com: 3
- axiobench.com: 2
- gane.ai/index: 2

### Pages cited

- https://tax.thomsonreuters.com/en/products/onesource-income-tax: 6
- https://getapp.com/finance-accounting-software/corporate-tax/org/mid-size-business: 4
- https://guideflow.com/blog/tax-compliance-software: 4
- https://peoplemanagingpeople.com/tools/best-business-tax-software: 3
- https://trustradius.com/tax-compliance: 3
- https://avalara.com/us/en/index.html: 2
- https://getapp.com/finance-accounting-software/corporate-tax: 2
- https://marketsandmarkets.com/ResearchInsight/tax-tech-companies.asp: 2

## In its own words

What Thomson Reuters ONESOURCE Income Tax's own pages state, read 2026-10-05. Stated by the vendor, not checked by the index.

- Positioning: Corporate income tax software (https://tax.thomsonreuters.com/en/products/onesource-income-tax)
- For: tax professionals (https://tax.thomsonreuters.com/en/products/onesource-income-tax)

## Record

- Method: https://www.gane.ai/index/finance/methodology
- License: CC BY 4.0. Cite as Gane Index, November 2026 Edition, www.gane.ai/index/finance.