Index › Tax and compliance › Corporate tax provision › Thomson Reuters ONESOURCE Tax Provision vs Bloomberg Tax Provision
Corporate tax provision · September 2026 Edition
Thomson Reuters ONESOURCE Tax Provision vs Bloomberg Tax Provision
Nine of twelve models named Thomson Reuters ONESOURCE Tax Provision first on the direct prompt; three named Bloomberg Tax Provision. Thomson Reuters ONESOURCE Tax Provision was named by twelve of the twelve models and Bloomberg Tax Provision by eleven and Thomson Reuters ONESOURCE Tax Provision carries 33 labels and Bloomberg Tax Provision 43, so the shares are not directly comparable.
Named in one category this edition.
Named in one category this edition.
First-choice share26%10%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate15%14%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#1#2A position in a field of 9; printed, not drawn.
Labels3343A 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.Thomson Reuters ONESOURCE Tax Provision vs Thomson Reuters ONESOURCE · Bloomberg Tax Provision vs Thomson Reuters ONESOURCE
Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all twelve 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 twelve models made each the first choice, per way of asking, and how many argued against it.
Thomson Reuters ONESOURCE Tax ProvisionFirst choices, of twelve modelsBloomberg Tax Provision
Direct93
Paraphrase101 against Bloomberg Tax Provision
Comparative51
Budget-constrained003 against Thomson Reuters ONESOURCE Tax Provision · 5 against Bloomberg Tax Provision
Scale-constrained111 against Thomson Reuters ONESOURCE Tax Provision
Negative011 against Thomson Reuters ONESOURCE Tax Provision
Bars are first choices, 0 to 12 each sideModels that argued againstA model can name both, so the two sides of a row do not sum to twelve.
The direct prompt
The plain question, one answer per model, grouped by where Thomson Reuters ONESOURCE Tax Provision and Bloomberg Tax Provision stood in it.
Both were the first choice
2 of 12 modelsThe answer named them together, and the judge labeled each a first choice.DeepSeek V4 FlashBloomberg Tax Provision, Thomson Reuters ONESOURCE Tax Provision alternatives: Sovos Tax Provision, Vertex Tax Accounting
MiniMax M2.5Bloomberg Tax Provision, Thomson Reuters ONESOURCE Tax Provision alternatives: CCH Tagetik Tax Provision & Reporting, Taxfyle, Vertex Tax Accounting
Thomson Reuters ONESOURCE Tax Provision first, Bloomberg Tax Provision an alternative
7 of 12 modelsBloomberg Tax Provision was named in the answer but not as the choice, or not at all.GPT-5.4 miniThomson Reuters ONESOURCE Tax Provision alternatives: CCH Axcess/ProSystem fx tax provision offerings, Longview Tax, ONESOURCE Income Tax / Direct Tax Essential
Perplexity SonarThomson Reuters ONESOURCE Tax Provision alternatives: CSC Corptax, Wolters Kluwer CCH Tagetik Tax Provision & Reporting
Grok 4.1 FastThomson Reuters ONESOURCE Tax Provision alternatives: TaxPoint, Taxfyle, Vertex Tax Accounting
Mistral SmallThomson Reuters ONESOURCE Tax Provision alternatives: Sovos Tax Provision, Vertex Tax Accounting
Llama 4 MaverickThomson Reuters ONESOURCE Tax Provision alternatives: Avalara, CCH Axcess Tax, Taxfyle
Kimi K2Thomson Reuters ONESOURCE Tax Provision alternatives: CCH Tagetik, FloQast Tax Provision, Longview Tax, Lucasys Tax Provision, Sovos Tax Provision
GLM 4.7 FlashXThomson Reuters ONESOURCE Tax Provision alternatives: Bloomberg Tax Provision, Longview Tax, Sovos Tax Provision
Bloomberg Tax Provision first, Thomson Reuters ONESOURCE Tax Provision an alternative
1 of 12 modelsThomson Reuters ONESOURCE Tax Provision was named in the answer but not as the choice, or not at all.Gemini 3.5 FlashBloomberg Tax Provision alternatives: Exactera Tax Provision, Longview Tax, Thomson Reuters ONESOURCE Tax Provision, Vena Solutions
Neither was the first choice, one was named
2 of 12 modelsThe answer put something else first and named one of the two as an alternative.Claude Haiku 4.5no first choice alternatives: Bloomberg Tax Provision, CSC Corptax, Longview Tax, Thomson Reuters ONESOURCE
Qwen 3.7 FlashLongview Tax alternatives: Bloomberg Tax Provision, CSC Corptax, Thomson Reuters ONESOURCE
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 Provision14%#1 of 9Thomson Reuters ONESOURCE Tax Provision2%#6 of 9Mid-marketThe figures above
The order flips: Thomson Reuters ONESOURCE Tax Provision leads at mid-market.
Thomson Reuters ONESOURCE Tax Provision26%#1 of 9Bloomberg Tax Provision10%#2 of 9Enterprise
Thomson Reuters ONESOURCE Tax Provision leads by forty-one points.
Thomson Reuters ONESOURCE Tax Provision43%#1 of 9Bloomberg Tax Provision2%#5 of 9What 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.
“mid-market enterprises or lean tax teams (fewer than 5–10 people) should approach them with caution” Gemini 3.5 Flash · negative prompt · soft negative
“these systems may represent more cost, complexity, and implementation friction than you need” Gemini 3.5 Flash · scale prompt · soft negative
“routinely costs between $50,000 and $100,000+ annually in licensing and implementation fees” Gemini 3.5 Flash · budget prompt · soft negative
“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 · direct prompt · first choice
“Leading solution for automating ASC 740 tax provision calculations, ETR analysis, and financial disclosures with robust integrations” Claude Haiku 4.5 · comparative prompt · first choice
“OTP is the market-heavyweight software.... Best For: Large, multinational corporations seeking an end-to-end global tax ecosystem.” Gemini 3.5 Flash · comparative prompt · first choice
What 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.
“Bloomberg Tax Provision: An enterprise-grade platform with high implementation overhead.” Qwen 3.7 Flash · budget prompt · hard negative
“significantly cheaper than enterprise solutions like Bloomberg (often $50k-$100k+)” DeepSeek V4 Flash · budget prompt · soft negative
“Deep analytics, but lighter on full compliance | Costly for pure filing needs” Grok 4.1 Fast · paraphrase prompt · soft negative
“Frequently the "go-to" for mid-market companies. It is highly regarded for its transparent calculations (no black box), rapid implementation, and excellent customer support.” Gemini 3.5 Flash · scale prompt · first choice
“If you want the absolute best mix of rapid setup (<2 months), robust calculation, and intuitive interface, choose Bloomberg Tax Provision.” Gemini 3.5 Flash · direct prompt · first choice
“Choose Corptax or Bloomberg if you need comprehensive enterprise-grade automation with the highest audit standards” Kimi K2 · comparative prompt · first choice
Also compared
Comparisons are drawn for the top three products in each category. The output is the models' output; nothing here is a recommendation by the index.