Index › Finance › Tax and compliance › Corporate tax provision › Thomson Reuters ONESOURCE Tax Provision vs CSC Corptax Accounting for Income Taxes
Corporate tax provision · November 2026 Edition
Thomson Reuters ONESOURCE Tax Provision vs CSC Corptax Accounting for Income Taxes
Seven of fourteen models named Thomson Reuters ONESOURCE Tax Provision first on the direct prompt; zero named CSC Corptax Accounting for Income Taxes. Thomson Reuters ONESOURCE Tax Provision was named by fourteen of the fourteen models and CSC Corptax Accounting for Income Taxes by twelve and Thomson Reuters ONESOURCE Tax Provision carries 53 labels and CSC Corptax Accounting for Income Taxes 28, so the shares are not directly comparable.
Named in one category this edition.
CSC Corptax Accounting for Income Taxes
criticized challengerNamed in one category this edition.
First-choice share17%2%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate30%32%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#2#7A position in a field of 11; printed, not drawn.
Labels5328A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, Thomson Reuters ONESOURCE Tax Provision reading right to left. Rank and label count are printed, not drawn.Bloomberg Tax Provision was named alongside these two in eleven of the fourteen direct answers. Bloomberg Tax Provision vs Thomson Reuters ONESOURCE Tax Provision · Bloomberg Tax Provision vs CSC Corptax Accounting for Income Taxes · Thomson Reuters ONESOURCE Tax Provision vs Longview Tax
Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all fourteen models, for a mid-market B2B company; rank is within the category; every quote names the model and the prompt it came from. Both figures come from the corporate tax provision page.
By framing
How many of the fourteen models made each the first choice, per way of asking, and how many argued against it.
Thomson Reuters ONESOURCE Tax ProvisionFirst choices, of fourteen modelsCSC Corptax Accounting for Income TaxesDirect701 against CSC Corptax Accounting for Income Taxes
Paraphrase211 against Thomson Reuters ONESOURCE Tax Provision
Comparative101
Budget-constrained008 against Thomson Reuters ONESOURCE Tax Provision · 5 against CSC Corptax Accounting for Income Taxes
Scale-constrained101 against Thomson Reuters ONESOURCE Tax Provision
Negative105 against Thomson Reuters ONESOURCE Tax Provision · 3 against CSC Corptax Accounting for Income Taxes
Bars are first choices, 0 to 14 each sideModels that argued againstA model can name both, so the two sides of a row do not sum to fourteen.
Across every category in the November 2026 Edition, Thomson Reuters ONESOURCE Tax Provision and CSC Corptax Accounting for Income Taxes were named in the same answer eighty-nine times, of the 161 answers naming Thomson Reuters ONESOURCE Tax Provision and the 94 naming CSC Corptax Accounting for Income Taxes. In those answers CSC Corptax Accounting for Income Taxes took the first choice two times and Thomson Reuters ONESOURCE Tax Provision forty-three.
Every model, every framing
The eighty-four answers behind the chart above, one cell each: where Thomson Reuters ONESOURCE Tax Provision and CSC Corptax Accounting for Income Taxes stood in it.
| Model | DirectCC | ParaphraseCC | ComparativeCC | Budget-constrainedCC | Scale-constrainedCC | NegativeCC |
|---|---|---|---|---|---|---|
| Claude Haiku 4.5 | | | ||||
| GPT-5.4 mini | | | | |||
| Gemini 3.5 Flash | CC | CC | CC | CC | CC | CC |
| Perplexity Sonar | | CC | CC | |||
| Grok 4.20 | CC | | | CC | | |
| Mistral Small | | | CC | | ||
| DeepSeek V4 Flash | | CC | CC | | CC | |
| Llama 4 Maverick | | CC | ||||
| Qwen 3.7 Flash | CC | | | |||
| Kimi K2 | CC | | | CC | ||
| GLM 4.7 FlashX | | | | CC | ||
| MiniMax M2.5 | CC | CC | ||||
| GPT-6 Luna | | |||||
| Muse Glimmer 30B | | | CC | CC |
Thomson Reuters ONESOURCE Tax ProvisionCC CSC Corptax Accounting for Income Taxes first choice named as an alternative argued againstblank: not namedEach cell is one answer, Thomson Reuters ONESOURCE Tax Provision on the left and CSC Corptax Accounting for Income Taxes on the right.The direct prompt
The plain question, one answer per model, grouped by where Thomson Reuters ONESOURCE Tax Provision and CSC Corptax Accounting for Income Taxes stood in it.
Thomson Reuters ONESOURCE Tax Provision first, CSC Corptax Accounting for Income Taxes an alternative
7 of 14 modelsCSC Corptax Accounting for Income Taxes was named in the answer but not as the choice, or not at all.Grok 4.20Thomson Reuters ONESOURCE Tax Provision alternatives: Bloomberg Tax Provision, CSC Corptax Accounting for Income Taxes, Exactera Tax Provision, Longview Tax
Mistral SmallBloomberg Tax Provision, Thomson Reuters ONESOURCE Tax Provision alternatives: Taxfyle
DeepSeek V4 FlashThomson Reuters ONESOURCE Tax Provision alternatives: Bloomberg Tax Provision, Longview Tax
Qwen 3.7 FlashBloomberg Tax Provision, Thomson Reuters ONESOURCE Tax Provision alternatives: CSC Corptax Accounting for Income Taxes, Longview Tax
GLM 4.7 FlashXAvalara, Thomson Reuters ONESOURCE Tax Provision alternatives: Bloomberg Tax Provision, Commenda, Longview Tax
MiniMax M2.5Bloomberg Tax Provision, Thomson Reuters ONESOURCE Tax Provision alternatives: Account Ability, Longview Tax
GPT-6 LunaThomson Reuters ONESOURCE Tax Provision alternatives: Corptax AIT, Longview Tax, Tax Series
Neither was the first choice, one was named
6 of 14 modelsThe answer put something else first and named one of the two as an alternative.GPT-5.4 miniWolters Kluwer CCH Tagetik Tax Provision alternatives: Longview Tax, Thomson Reuters ONESOURCE Tax Provision
Gemini 3.5 FlashBloomberg Tax Provision alternatives: CSC Corptax Accounting for Income Taxes, OneStream Tax Provision, Oracle Tax Reporting, Thomson Reuters ONESOURCE Tax Provision, Workiva Tax and Provision
Perplexity SonarBloomberg Tax Provision alternatives: Longview Tax, Thomson Reuters ONESOURCE Tax Provision
Llama 4 MaverickTaxfyle alternatives: Avalara, Longview Tax, Thomson Reuters ONESOURCE Tax Provision
Kimi K2Bloomberg Tax Provision alternatives: CSC Corptax Accounting for Income Taxes, Longview Tax, Thomson Reuters ONESOURCE Tax Provision
Muse Glimmer 30BTaxfyle alternatives: Avalara, Bloomberg Tax Provision, Longview Tax by insightsoftware, Thomson Reuters ONESOURCE Tax Provision
Neither was named
1 of 14 modelsThe answer made no first choice from these two in this category.Claude Haiku 4.5Bloomberg Tax Provision, OneStream Tax Provision alternatives: CCH Axcess Tax from Wolters Kluwer, CSC Corptax AIT
Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.
By buyer segment
The same question asked on behalf of a different buyer. Each standing is computed within its segment and they are never added together. The figures above are the mid-market standing, which is the one the category orders by.
Small business
Level: the same share of first choices.
Thomson Reuters ONESOURCE Tax Provision0%#10 of 11CSC Corptax Accounting for Income Taxes0%#11 of 11
The full small business standing →Mid-marketThe figures above
Thomson Reuters ONESOURCE Tax Provision leads by fifteen points.
Thomson Reuters ONESOURCE Tax Provision17%#2 of 11CSC Corptax Accounting for Income Taxes2%#7 of 11
The full mid-market standing →Enterprise
Thomson Reuters ONESOURCE Tax Provision leads by sixty-nine points.
Thomson Reuters ONESOURCE Tax Provision77%#1 of 10CSC Corptax Accounting for Income Taxes8%#2 of 10
The full enterprise standing →What the models said about Thomson Reuters ONESOURCE Tax Provision
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of eight in this category shown.
“Avoid Enterprise Tools: ONESOURCE, Bloomberg, or Longview are top-rated for robust provision ... but have high licensing, implementation, and training costs” Grok 4.20 · budget prompt · hard negative
“What to avoid on a tight budget: Enterprise provision suites such as Thomson Reuters ONESOURCE Tax Provision” Muse Glimmer 30B · budget prompt · hard negative
“Avoid as a first choice on a tight budget: ONESOURCE, CSC Corptax, and similar enterprise suites” Perplexity Sonar · budget prompt · hard negative
“For corporate tax provisions, use established enterprise software like Thomson Reuters ONESOURCE or Wolters Kluwer CCH Axcess, but vet them through your organization's IT/security team.” Grok 4.20 · negative prompt · first choice
“the "best" corporate tax provision software generally comes down to two top contenders: Bloomberg Tax Provision and Thomson Reuters ONESOURCE” Qwen 3.7 Flash · direct prompt · first choice
“I'd suggest starting with either Bloomberg Tax Provision or ONESOURCE Tax Provision as your primary considerations” MiniMax M2.5 · direct prompt · first choice
What the models said about CSC Corptax Accounting for Income Taxes
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of eight in this category shown.
“Avoid as a first choice on a tight budget: ONESOURCE, CSC Corptax, and similar enterprise suites” Perplexity Sonar · budget prompt · hard negative
“Avoid ONESOURCE and Corptax unless you have a Fortune-500-style tax department.” Muse Glimmer 30B · negative prompt · hard negative
“should be avoided or used with caution include: ... Corptax” Llama 4 Maverick · negative prompt · hard negative
“Choose CSC Corptax or ONESOURCE if you have a dedicated in-house corporate tax manager needing end-to-end provision and return automation.” Gemini 3.5 Flash · paraphrase prompt · first choice
“Choose ONESOURCE or Corptax for a broad corporate-tax platform” Perplexity Sonar · comparative prompt · first choice
“Often recommended for companies that want to combine their provision work with state/federal return preparation in one place.” Qwen 3.7 Flash · direct prompt · alternative
Also compared
Bloomberg Tax Provision vs Thomson Reuters ONESOURCE Tax ProvisionBloomberg Tax Provision vs CSC Corptax Accounting for Income TaxesThomson Reuters ONESOURCE Tax Provision vs Longview TaxThomson Reuters ONESOURCE Tax Provision vs AvalaraThomson Reuters ONESOURCE Tax Provision vs OneStream Tax ProvisionThomson Reuters ONESOURCE Tax Provision vs Sovos Tax ProvisionLongview Tax vs CSC Corptax Accounting for Income TaxesAvalara vs CSC Corptax Accounting for Income TaxesOneStream Tax Provision vs CSC Corptax Accounting for Income TaxesSovos Tax Provision vs CSC Corptax Accounting for Income TaxesAll twenty-one head-to-head pages and the full corporate tax provision standing
Comparisons are drawn for the top eight products in each category, each against each. The output is the models' output; nothing here is a recommendation by the index.