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Corporate tax provision · November 2026 Edition
Bloomberg Tax Provision vs Thomson Reuters ONESOURCE Tax Provision
Seven of fourteen models named Bloomberg Tax Provision first on the direct prompt; seven named Thomson Reuters ONESOURCE Tax Provision. Both were named by all fourteen models and Bloomberg Tax Provision carries 42 labels and Thomson Reuters ONESOURCE Tax Provision 53, so the shares are not directly comparable.
Named in one category this edition.
Named in one category this edition.
First-choice share19%17%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate17%30%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#1#2A position in a field of 11; printed, not drawn.
Labels4253A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, Bloomberg Tax Provision reading right to left. Rank and label count are printed, not drawn.Longview Tax was named alongside these two in ten of the fourteen direct answers. Bloomberg Tax Provision vs Longview Tax · Bloomberg Tax Provision vs Avalara · Bloomberg Tax Provision vs OneStream Tax Provision
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.
Bloomberg Tax ProvisionFirst choices, of fourteen modelsThomson Reuters ONESOURCE Tax Provision
Direct77
Paraphrase221 against Thomson Reuters ONESOURCE Tax Provision
Comparative010
Budget-constrained106 against Bloomberg Tax Provision · 8 against Thomson Reuters ONESOURCE Tax Provision
Scale-constrained111 against Thomson Reuters ONESOURCE Tax Provision
Negative011 against Bloomberg Tax Provision · 5 against Thomson Reuters ONESOURCE Tax Provision
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, Bloomberg Tax Provision and Thomson Reuters ONESOURCE Tax Provision were named in the same answer ninety times, of the 103 answers naming Bloomberg Tax Provision and the 161 naming Thomson Reuters ONESOURCE Tax Provision. In those answers Thomson Reuters ONESOURCE Tax Provision took the first choice thirty-six times and Bloomberg Tax Provision eighteen.
Every model, every framing
The eighty-four answers behind the chart above, one cell each: where Bloomberg Tax Provision and Thomson Reuters ONESOURCE Tax Provision stood in it.
| Model | Direct | Paraphrase | Comparative | Budget-constrained | Scale-constrained | Negative |
|---|---|---|---|---|---|---|
| Claude Haiku 4.5 | | | | |||
| GPT-5.4 mini | | | | |||
| Gemini 3.5 Flash | | | | | | |
| Perplexity Sonar | | | | |||
| Grok 4.20 | | | | | | |
| Mistral Small | | | | | ||
| DeepSeek V4 Flash | | | | | ||
| Llama 4 Maverick | | | ||||
| Qwen 3.7 Flash | | | | |||
| Kimi K2 | | | | | | |
| GLM 4.7 FlashX | | | | |||
| MiniMax M2.5 | | | ||||
| GPT-6 Luna | | |||||
| Muse Glimmer 30B | | | | |
Bloomberg Tax Provision Thomson Reuters ONESOURCE Tax Provision first choice named as an alternative argued againstblank: not namedEach cell is one answer, Bloomberg Tax Provision on the left and Thomson Reuters ONESOURCE Tax Provision on the right.The direct prompt
The plain question, one answer per model, grouped by where Bloomberg Tax Provision and Thomson Reuters ONESOURCE Tax Provision stood in it.
Both were the first choice
3 of 14 modelsThe answer named them together, and the judge labeled each a first choice.Mistral SmallBloomberg Tax Provision, Thomson Reuters ONESOURCE Tax Provision alternatives: Taxfyle
Qwen 3.7 FlashBloomberg Tax Provision, Thomson Reuters ONESOURCE Tax Provision alternatives: CSC Corptax Accounting for Income Taxes, Longview Tax
MiniMax M2.5Bloomberg Tax Provision, Thomson Reuters ONESOURCE Tax Provision alternatives: Account Ability, Longview Tax
Bloomberg Tax Provision first, Thomson Reuters ONESOURCE Tax Provision an alternative
4 of 14 modelsThomson Reuters ONESOURCE Tax Provision was named in the answer but not as the choice, or not at all.Claude Haiku 4.5Bloomberg Tax Provision, OneStream Tax Provision alternatives: CCH Axcess Tax from Wolters Kluwer, CSC Corptax AIT
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
Kimi K2Bloomberg Tax Provision alternatives: CSC Corptax Accounting for Income Taxes, Longview Tax, Thomson Reuters ONESOURCE Tax Provision
Thomson Reuters ONESOURCE Tax Provision first, Bloomberg Tax Provision an alternative
4 of 14 modelsBloomberg Tax Provision 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
DeepSeek V4 FlashThomson Reuters ONESOURCE Tax Provision alternatives: Bloomberg Tax Provision, Longview Tax
GLM 4.7 FlashXAvalara, Thomson Reuters ONESOURCE Tax Provision alternatives: Bloomberg Tax Provision, Commenda, Longview Tax
GPT-6 LunaThomson Reuters ONESOURCE Tax Provision alternatives: Corptax AIT, Longview Tax, Tax Series
Neither was the first choice, one was named
3 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
Llama 4 MaverickTaxfyle alternatives: Avalara, Longview Tax, Thomson Reuters ONESOURCE Tax Provision
Muse Glimmer 30BTaxfyle alternatives: Avalara, Bloomberg Tax Provision, Longview Tax by insightsoftware, Thomson Reuters ONESOURCE Tax Provision
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
Bloomberg Tax Provision leads by twelve points.
Bloomberg Tax Provision12%#2 of 11Thomson Reuters ONESOURCE Tax Provision0%#10 of 11Mid-marketThe figures above
Bloomberg Tax Provision leads by two points.
Bloomberg Tax Provision19%#1 of 11Thomson Reuters ONESOURCE Tax Provision17%#2 of 11Enterprise
The order flips: Thomson Reuters ONESOURCE Tax Provision leads at enterprise.
Thomson Reuters ONESOURCE Tax Provision77%#1 of 10Bloomberg Tax Provision0%#6 of 10What the models said about Bloomberg 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 These If Budget-Constrained - Bloomberg Tax Provision — very powerful, but pricing is quote-only and typically $30K–$150K/year.” DeepSeek V4 Flash · budget prompt · hard negative
“Avoid Enterprise Tools: ONESOURCE, Bloomberg, or Longview ... often not viable under $10k–$20k/year.” Grok 4.20 · budget prompt · hard negative
“some tax provision tools that should be avoided or used with caution include: 1. Bloomberg Tax Provision” Llama 4 Maverick · negative prompt · hard negative
“Highly regarded for mid-market and mid-tier companies; strong ASC 740 engine, clean user interface, and relatively fast implementation.” Gemini 3.5 Flash · scale prompt · first choice
“Start with Bloomberg Tax Provision if you're a true mid-market company focused on ASC 740 accuracy with minimal complexity.” Kimi K2 · direct prompt · first choice
“Bloomberg Tax is a tax management and automation software suite supporting corporate tax research, calculation, and compliance” Claude Haiku 4.5 · paraphrase prompt · first choice
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
Also compared
Bloomberg Tax Provision vs Longview TaxBloomberg Tax Provision vs AvalaraBloomberg Tax Provision vs OneStream Tax ProvisionBloomberg Tax Provision vs Sovos 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 ProvisionThomson Reuters ONESOURCE 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.