Finance AI Index
September 2026 Edition · The permanent record of this edition. The unqualified address always carries the latest edition.
Index Tax and compliance Corporate tax provision › Enterprise September 2026 Edition

Corporate tax provision for enterprise buyers

Asked as “corporate tax provision software”, and as “income tax compliance software”, on behalf of an enterprise B2B company. 44 first choices recorded across the direct, paraphrase, budget and scale prompts, twelve models each.
Standing
Clear leader
43% of first choices, clear leader.

By buyer segment

The same question asked on behalf of a different buyer. Each standing is computed within its segment; they sit side by side and are never added together.

01The standing

Share is the count of first choices across the direct, paraphrase, budget and scale prompts, over all twelve models, for an enterprise B2B company. Ordered by share.
ProductFirst-choice shareNegative rateLabelsQuadrant
02Thomson Reuters ONESOURCE20%10%20accepted challenger
03CSC Corptax5%7%27accepted challenger
04Sovos Tax Provision5%11%28accepted challenger
05Bloomberg Tax Provision2%9%34accepted challenger
06Longview Tax2%19%26accepted challenger
07CCH Tagetik2%0%14accepted challenger
08Vertex2%0%11accepted challenger
Show the one product at 0%, ordered by negative rate
09Oracle Tax Reporting0%0%10accepted challenger
Bars are the share of first choices, 0 to 100Every product with at least 10 labels here. Every product name links to its vendor page.

Recommended versus criticized

Every product with at least 10 labels here, on both axes. The 30% line names a quadrant, not the verdict above: that one needs more than 40%.

Criticized challengerCriticized default
Negative label rate →
01
02
03
04
05
06
07
08
09
Accepted challengerEndorsed leader
0%First-choice share → · lines at 30% share and 25% negative60%
Key
01Thomson Reuters ONESOURCE Tax Provision43%
02Thomson Reuters ONESOURCE20%
03CSC Corptax5%
04Sovos Tax Provision5%
05Bloomberg Tax Provision2%
06Longview Tax2%
07CCH Tagetik2%
08Vertex2%
09Oracle Tax Reporting0%

02What they warned about

Zero of twelve models held their first choice under the paraphrase. Claude Haiku 4.5, GPT-5.4 mini, Gemini 3.5 Flash, Perplexity Sonar, Grok 4.1 Fast, Mistral Small, DeepSeek V4 Flash, Llama 4 Maverick, Qwen 3.7 Flash, Kimi K2, GLM 4.7 FlashX and MiniMax M2.5 changed. A high negative share on a product with few labels is a warning. A low share on a product with many labels is salience, not sentiment.
Longview Tax
19%
5 of 26 labels negative · 4 of 12 models
“Legacy Tools with Stale Architecture (e.g., Longview Tax) ... Longview Tax scored significantly lower (6.2/10)” DeepSeek V4 Flash, negative prompt
Spreadsheets
100%
3 of 3 labels negative · 3 of 12 models · 3 hard negative
“The risk of inaccuracies and lack of auditability makes them a poor choice for large enterprises” Mistral Small, negative prompt
Bloomberg Tax Provision
9%
3 of 34 labels negative · 3 of 12 models
“Pricing is often opaque or quote-based, and it lacks the per-user flexibility of Tagetik for very large, distributed teams.” GLM 4.7 FlashX, budget prompt
Sovos Tax Provision
11%
3 of 28 labels negative · 3 of 12 models
“Pricing is modular and driven by transaction volume, jurisdictions, and modules, making it less predictable” Mistral Small, budget prompt

03What they cite

Citations exist only for the models that return a source list: twelve of the twelve in this edition, and all six flagship models on the expanded tier.

Sites the answers cite

68 of 72 answers in this category came back with a source list, from 12 of 12 models: citations where the model returns them, or the search results it consulted. 6 of those lists are Google grounding redirects that name no site and are left out of the counts. 992 links across 192 sites, every framing counted. Ranked by the number of answers carrying the site or page.

41 answers · 113 citations · 9 models
vendor site · Thomson Reuters40 answers · 78 citations · 10 models
vendor site · Zipdo32 answers · 52 citations · 10 models
29 answers · 49 citations · 10 models
28 answers · 53 citations · 10 models
vendor site · Wolters Kluwer24 answers · 32 citations · 10 models
24 answers · 25 citations · 10 models
23 answers · 23 citations · 8 models
vendor site · Bloomberg Tax22 answers · 43 citations · 7 models
22 answers · 32 citations · 10 models
20 answers · 20 citations · 10 models
11 answers · 14 citations · 8 models

Pages the answers cite

The ten pages named in the most answers, by full address. A page here is one the models returned with a recommendation, not one the index endorses.

04How they answered

Six framings of the same buying question, each sent to every model in a fresh session with search on. One row per model, so a row shows whether it held its answer under rewording, what it named when cost was the constraint, and what it argued against. Computed from the raw judge labels.
ModelDirect“What is the best corporate tax provision software for an enterprise B2B company?”Paraphrase“Which income tax compliance software would you recommend to a large B2B company with thousands of employees?”Comparative“What are the top enterprise-grade tax provision tools and how do they differ?”Budget-constrained“What is the best corporate tax provision software for a large company that needs predictable total cost across thousands of users?”Scale-constrained“We are a 5,000 person company with SSO, SOC 2 and procurement review requirements evaluating a corporate tax provision software. What should we look at?”Negative“Which tax provision tools should a large enterprise avoid or be cautious about?”
Claude Haiku 4.5Thomson Reuters ONESOURCE Tax Provision
Four alternativesBloomberg Tax Provision, CSC Corptax, Longview Tax, Oracle Tax Reporting
Thomson Reuters ONESOURCEChanged
Two alternativesAsure Payroll Tax Management, Vertex
Thomson Reuters ONESOURCE
Three alternativesBloomberg Tax Provision, CCH Tagetik, CSC Corptax
Thomson Reuters ONESOURCE Tax Provision
Two alternativesCSC Corptax, Oracle Tax Reporting
no first choiceagainst: Excel spreadsheets
GPT-5.4 miniThomson Reuters ONESOURCE Tax Provision
One alternativeCSC Corptax
against: CCH Axcess / CCH ProSystem fx ecosystem
ADP SmartComplianceChanged
Three alternativesSovos Tax Provision, Thomson Reuters, Vertex
Thomson Reuters ONESOURCE Tax Provision
Two alternativesOracle Hyperion Tax Provision, Wolters Kluwer CCH Tagetik Corporate Tax / Tax Provision & Reporting
Thomson Reuters ONESOURCE Tax Provisionno first choicenothing named
Gemini 3.5 FlashThomson Reuters ONESOURCE Tax Provision
Five alternativesBloomberg Tax Provision, CSC Corptax, Longview Tax, OneStream Tax Provision, Oracle Cloud EPM Tax Reporting / Hyperion Tax Provision
CSC Corptax, Thomson Reuters ONESOURCEChanged
Four alternativesADP SmartCompliance, MasterTax, Vertex, Wolters Kluwer CCH Axcess Tax / CCH Integrator
CSC Corptax, Thomson Reuters ONESOURCE Tax Provision
Four alternativesLongview Tax, OneStream Tax Provision, Oracle Cloud Tax Reporting, Wolters Kluwer CCH Tagetik / CCH Integrator
CSC Corptax, Thomson Reuters ONESOURCE Tax Provision
Three alternativesLongview Tax, OneStream, Oracle Cloud EPM Tax Reporting
Thomson Reuters ONESOURCE Tax Provision
Three alternativesBloomberg Tax Provision, CSC Corptax, Longview Tax
against: CSC Corptax, Longview Tax, Microsoft Excel, Oracle, SAP, Thomson Reuters ONESOURCE Tax Provision, Workday
Perplexity SonarThomson Reuters ONESOURCE
Four alternativesCCH Tagetik, CSC Corptax, Sovos Tax Provision, Workiva
Thomson Reuters ONESOURCE, VertexChangedagainst: TaxCloud, TaxJarThomson Reuters ONESOURCE Tax Provision
Four alternativesBloomberg Tax Provision, CCH Tagetik, Oracle Tax Reporting, Sovos Tax Provision
Bloomberg Tax Provision
Two alternativesCCH Tagetik, Thomson Reuters ONESOURCE Tax Provision
no first choiceagainst: NetSuite
Grok 4.1 FastThomson Reuters ONESOURCE Tax Provision
Two alternativesLongview Tax, Sovos Tax Provision
Thomson Reuters ONESOURCEChanged
Three alternativesBloomberg Tax Provision, Vertex O Series, Wolters Kluwer CCH Tagetik
Thomson Reuters ONESOURCE Tax Provision
Five alternativesBloomberg Tax Provision, CSC Corptax, Oracle Tax Reporting, Vertex Tax Accounting, Vertex Tax Provision
against: Longview Tax
Thomson Reuters ONESOURCE Tax Provision
Two alternativesBloomberg Tax Provision, CCH Tagetik
against: Sovos Tax Provision, Vertex Corporate Tax
Thomson Reuters ONESOURCE Tax Provision
Three alternativesBloomberg Tax Provision, CCH Tagetik, Sovos Tax Provision
against: Bloomberg Tax Provision, CSC Corptax, Google Sheets, Longview Tax, Microsoft Excel
Mistral SmallThomson Reuters ONESOURCE Tax Provision
Two alternativesLongview Tax, Sovos Tax Provision
Vertex Corporate TaxChanged
Two alternativesFonoa, Sovos Tax Provision
CSC Corptax, Thomson Reuters ONESOURCE Tax Provision
Three alternativesBloomberg Tax Provision, Longview Tax, Vertex Tax Accounting
CCH Tagetik Tax Provision & Reportingagainst: Sovos Tax Provision, Vertex Tax Accountingno first choiceagainst: Spreadsheets
DeepSeek V4 FlashThomson Reuters ONESOURCE Tax Provision
Three alternativesCCH Tagetik, Sovos Tax Provision, Workiva Tax Provision
Thomson Reuters ONESOURCEChanged
Four alternativesBloomberg Tax Provision, Oracle Tax Reporting, Vertex, Wolters Kluwer CCH Tagetik
against: Avalara
Thomson Reuters ONESOURCE Tax Provision
Five alternativesBloomberg Tax Provision, CSC Corptax, Longview Tax, Oracle Tax Reporting, Sovos Tax Provision
CCH Tagetik Tax Provision & Reporting
Two alternativesCSC Corptax, Thomson Reuters ONESOURCE
against: Bloomberg Tax Provision
Thomson Reuters ONESOURCE Tax Provision
Three alternativesCSC Corptax, Longview Tax, Sovos Tax Provision
against: Longview Tax, OneStream, Oracle Hyperion, Spreadsheets, Thomson Reuters ONESOURCE
Llama 4 MaverickThomson Reuters ONESOURCE Tax Provision
Three alternativesBloomberg Tax Provision, Longview Tax, Sovos Tax Provision
FonoaChanged
Two alternativesThomson Reuters, Vertex
no first choiceSovos Tax Provision
Two alternativesCCH Tagetik, Vertex Corporate Tax
no first choiceagainst: Spreadsheets, Taxfyle
Qwen 3.7 FlashThomson Reuters ONESOURCE Tax Provision
Two alternativesLongview Tax, Wolters Kluwer CCH Tagetik Tax Provision
against: Sovos Tax Provision
Thomson Reuters ONESOURCEChanged
Two alternativesCCH Tagetik, Dipexia
against: Avalara
Thomson Reuters ONESOURCE Tax Provision
Two alternativesCSC Corptax, Workiva
Longview Tax
Two alternativesCCH Tagetik, Thomson Reuters ONESOURCE
no first choicenothing named
Kimi K2Sovos Tax Provision, Thomson Reuters ONESOURCE Tax Provision
Three alternativesBloomberg Tax Provision, Longview Tax, Oracle Tax Reporting
Thomson Reuters ONESOURCEChanged
Three alternativesADP SmartCompliance, Sovos Compliance Cloud, Vertex
Sovos Tax Provision
Four alternativesBloomberg Tax Provision, Longview Tax, Oracle Cloud EPM Tax Reporting, Thomson Reuters ONESOURCE Tax Provision
Workiva Tax Reporting
One alternativeBloomberg Tax Provision
against: Longview Tax, Thomson Reuters ONESOURCE
Thomson Reuters ONESOURCE Tax Provision
Four alternativesCSC Corptax, OneStream Tax Provision, Sovos Tax Provision, Workiva
nothing named
GLM 4.7 FlashXThomson Reuters ONESOURCE Tax Provision
Two alternativesLongview Tax, Sovos Tax Provision
Thomson Reuters ONESOURCE Income TaxChanged
Three alternativesAvalara, Sovos Tax Provision, Vertex
against: Fonoa
Thomson Reuters ONESOURCE Tax Provision
Four alternativesCCH Tagetik Tax Provision & Reporting, OneStream Tax Provision, Sovos Tax Provision, Workiva Tax Provision
CCH Tagetik
One alternativeThomson Reuters ONESOURCE
against: Bloomberg Tax Provision
no first choicenothing named
MiniMax M2.5Thomson Reuters ONESOURCE Tax Provision
Two alternativesOneStream Tax Provision, Sovos Tax Provision
ADP SmartComplianceChanged
One alternativeThomson Reuters ONESOURCE
Sovos Tax Provision
Five alternativesCCH Tagetik Tax Provision & Reporting, CSC Corptax, OneStream Tax Provision, Thomson Reuters ONESOURCE Tax Provision, Workiva
Thomson Reuters ONESOURCE
Three alternativesBloomberg Tax Provision, CCH Tagetik, CSC Corptax
no first choiceagainst: Excel, TaxPoint, Vertex Tax Accounting
Bold is the first choiceAlternatives are counted; the count opens them.What the answer argued against

05The record

One row per call: the version string exactly as returned, whether the model searched, sources cited, and latency. Full answer text is in the free responses file. Download the record
Seventy-two rows: every prompt, every model, every answer.
PromptModelVersion stringTime (UTC)SearchedSourcesLatency
Direct recommendationClaude Haiku 4.5claude-haiku-4-5-202510012026-09-17 18:39yes1510 s
Direct recommendationGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-17 18:28yes45 s
Direct recommendationGemini 3.5 Flashgemini-3.5-flash2026-09-17 19:10yes2328 s
Direct recommendationPerplexity Sonarsonar2026-09-17 18:30yes209 s
Direct recommendationGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-17 20:37yes3219 s
Direct recommendationMistral Smallmistral/mistral-small via mistral2026-09-17 19:39yes1710 s
Direct recommendationDeepSeek V4 Flashdeepseek/deepseek-v4-flash via fireworks2026-09-17 20:18yes1716 s
Direct recommendationLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-17 20:55yes53 s
Direct recommendationQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-17 20:05yes1036 s
Direct recommendationKimi K2moonshotai/kimi-k2 via novita2026-09-17 19:01yes1941 s
Direct recommendationGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-17 19:22yes1345 s
Direct recommendationMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-17 19:41yes1943 s
ParaphraseClaude Haiku 4.5claude-haiku-4-5-202510012026-09-17 19:39yes1810 s
ParaphraseGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-17 19:14yes35 s
ParaphraseGemini 3.5 Flashgemini-3.5-flash2026-09-17 18:35yes1226 s
ParaphrasePerplexity Sonarsonar2026-09-17 19:25yes206 s
ParaphraseGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-17 19:05yes2818 s
ParaphraseMistral Smallmistral/mistral-small via mistral2026-09-17 20:47yes55 s
ParaphraseDeepSeek V4 Flashdeepseek/deepseek-v4-flash via fireworks2026-09-17 18:47yes1013 s
ParaphraseLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-17 18:08yes52 s
ParaphraseQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-17 17:55yes1364 s
ParaphraseKimi K2moonshotai/kimi-k2 via novita2026-09-17 20:37yes2029 s
ParaphraseGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-17 19:16yes2132 s
ParaphraseMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-17 18:16yes1523 s
ComparativeClaude Haiku 4.5claude-haiku-4-5-202510012026-09-17 20:49yes99 s
ComparativeGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-17 18:31yes610 s
ComparativeGemini 3.5 Flashgemini-3.5-flash2026-09-17 19:04yes2036 s
ComparativePerplexity Sonarsonar2026-09-17 18:11yes209 s
ComparativeGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-17 21:04yes2419 s
ComparativeMistral Smallmistral/mistral-small via mistral2026-09-17 18:33yes99 s
ComparativeDeepSeek V4 Flashdeepseek/deepseek-v4-flash via fireworks2026-09-17 21:09yes1932 s
ComparativeLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-17 20:39yes53 s
ComparativeQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-17 19:16yes834 s
ComparativeKimi K2moonshotai/kimi-k2 via novita2026-09-17 19:09yes1838 s
ComparativeGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-17 19:27yes29139 s
ComparativeMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-17 20:13yes1335 s
Budget constrainedClaude Haiku 4.5claude-haiku-4-5-202510012026-09-17 19:37yes178 s
Budget constrainedGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-17 20:15yes36 s
Budget constrainedGemini 3.5 Flashgemini-3.5-flash2026-09-17 21:54yes2164 s
Budget constrainedPerplexity Sonarsonar2026-09-17 20:18yes168 s
Budget constrainedGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-17 21:04yes4320 s
Budget constrainedMistral Smallmistral/mistral-small via mistral2026-09-17 19:35yes2011 s
Budget constrainedDeepSeek V4 Flashdeepseek/deepseek-v4-flash via fireworks2026-09-17 20:34yes2445 s
Budget constrainedLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-17 20:39yes53 s
Budget constrainedQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-17 20:24yes947 s
Budget constrainedKimi K2moonshotai/kimi-k2 via novita2026-09-17 18:36yes2564 s
Budget constrainedGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-17 20:58yes2436 s
Budget constrainedMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-17 18:52yes2248 s
Scale constrainedClaude Haiku 4.5claude-haiku-4-5-202510012026-09-17 18:00yes1813 s
Scale constrainedGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-17 21:05no09 s
Scale constrainedGemini 3.5 Flashgemini-3.5-flash2026-09-17 19:08yes1027 s
Scale constrainedPerplexity Sonarsonar2026-09-17 20:03yes2011 s
Scale constrainedGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-17 17:56yes2015 s
Scale constrainedMistral Smallmistral/mistral-small via mistral2026-09-17 19:52no07 s
Scale constrainedDeepSeek V4 Flashdeepseek/deepseek-v4-flash via fireworks2026-09-17 19:17yes2948 s
Scale constrainedLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-17 20:36yes54 s
Scale constrainedQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-17 18:18no032 s
Scale constrainedKimi K2moonshotai/kimi-k2 via novita2026-09-17 19:27yes1058 s
Scale constrainedGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-17 20:46yes1539 s
Scale constrainedMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-17 20:06yes927 s
Negative framingClaude Haiku 4.5claude-haiku-4-5-202510012026-09-17 18:06yes1511 s
Negative framingGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-17 20:53yes55 s
Negative framingGemini 3.5 Flashgemini-3.5-flash2026-09-17 19:12yes1625 s
Negative framingPerplexity Sonarsonar2026-09-17 18:15yes207 s
Negative framingGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-17 19:33yes3417 s
Negative framingMistral Smallmistral/mistral-small via mistral2026-09-17 19:39yes56 s
Negative framingDeepSeek V4 Flashdeepseek/deepseek-v4-flash via fireworks2026-09-17 20:41yes2348 s
Negative framingLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-17 20:13yes53 s
Negative framingQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-17 19:51no028 s
Negative framingKimi K2moonshotai/kimi-k2 via novita2026-09-17 19:57yes2539 s
Negative framingGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-17 19:10yes2267 s
Negative framingMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-17 18:31yes1575 s

Normalization in this category

Every judgment call made between the raw labels and the numbers above, listed so it is visible and reversible.

Category-scoped readings
Bloomberg Tax read as Bloomberg Tax Provision
Longview read as Longview Tax
ONESOURCE read as Thomson Reuters ONESOURCE
ONESOURCE (Thomson Reuters) read as Thomson Reuters ONESOURCE
Sovos read as Sovos Tax Provision
Unresolved, counted raw
Asure Payroll Tax Management
CCH Axcess / CCH ProSystem fx ecosystem
CSC Corptax AIT
Dipexia
Epic
MasterTax (by Equifax)
Oracle Cloud EPM Tax Reporting / Hyperion Tax Provision
Oracle Cloud Tax Reporting (TRCS / Tax Reporting Cloud Service)
Oracle Hyperion Tax Provision
Oracle Tax Reporting / Cloud EPM
Paycom
Plexus Group
PowerPlan Tax Provision
Procor
Sovos Withholding Tax
Symmetry Software or BSI (Business Software, Inc.)
Tax Technologies, Inc. Tax Series
Wolters Kluwer CCH Axcess Tax / CCH Integrator
Wolters Kluwer CCH Tagetik / CCH Integrator
Wolters Kluwer CCH Tagetik Corporate Tax / Tax Provision & Reporting
Workiva Tax Reporting
Discontinued, still offered
No shut-down product was recommended here.
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