Corporate tax provision · October 2026 Edition
TaxAct Business vs Vertex
Zero of fourteen models named TaxAct Business first on the direct prompt; zero named Vertex. TaxAct Business was named by nine of the fourteen models and Vertex by seven and both carry 10 labels, so the shares below are directly comparable.
Named in one category this edition.
Named in five categories this edition.
First-choice share13%4%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate0%10%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#3#5A position in a field of 9; printed, not drawn.
Labels1010Equal, which is what makes the shares comparable.
The two percentage rows are drawn on one 0 to 100 track, TaxAct Business 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. Thomson Reuters ONESOURCE Tax Provision vs TaxAct Business · Thomson Reuters ONESOURCE Tax Provision vs Vertex · Bloomberg Tax Provision vs TaxAct Business
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.
TaxAct BusinessFirst choices, of fourteen modelsVertex
Direct00
Paraphrase021 against Vertex
Comparative01
Budget-constrained70
Scale-constrained00
Negative00
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.
Every model, every framing
The eighty-four answers behind the chart above, one cell each: where TaxAct Business and Vertex 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 4.1 Fast | | | ||||
| 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 | |
TaxAct Business Vertex first choice named as an alternative argued againstblank: not namedEach cell is one answer, TaxAct Business on the left and Vertex on the right.The direct prompt
The plain question, one answer per model, grouped by where TaxAct Business and Vertex stood in it.
Neither was named
14 of 14 modelsThe answer made no first choice from these two in this category.Claude Haiku 4.5Bloomberg Tax Provision alternatives: Longview Tax, Thomson Reuters ONESOURCE Tax Provision
GPT-5.4 miniBloomberg Tax Provision, Longview Tax
Gemini 3.5 FlashBloomberg Tax Provision alternatives: Exactera Tax Provision, OneStream, Vena Solutions
Perplexity SonarThomson Reuters ONESOURCE Tax Provision alternatives: Bloomberg Tax Provision, Longview Tax, Vertex Tax Accounting, Vertex Tax Provision
Grok 4.1 FastThomson Reuters ONESOURCE Tax Provision, Vertex Corporate Tax alternatives: Bloomberg Tax Provision, Sovos Tax Provision
Mistral SmallBloomberg Tax Provision alternatives: Oracle Tax Reporting
DeepSeek V4 FlashBloomberg Tax Provision alternatives: TaxPoint, Thomson Reuters ONESOURCE Tax Provision, Vertex Tax Accounting
Llama 4 Maverickno first choice
Qwen 3.7 FlashTaxSeries alternatives: Bloomberg Tax Provision, OneStream Tax Provision, Sovos Tax Provision
Kimi K2Thomson Reuters ONESOURCE Tax Provision alternatives: Bloomberg Tax Provision, Vertex Tax Accounting
GLM 4.7 FlashXThomson Reuters ONESOURCE Tax Provision alternatives: CCH Axcess Tax, Vertex Tax Accounting
MiniMax M2.5Bloomberg Tax Provision, Vertex Tax Accounting alternatives: Oracle Tax Reporting, Thomson Reuters ONESOURCE Tax Provision
GPT-6 LunaThomson Reuters ONESOURCE Tax Provision alternatives: CSC Corptax
Muse Glimmer 30BThomson Reuters ONESOURCE Tax Provision alternatives: Bloomberg Tax Provision, OneStream Tax Provision, Vertex Tax Accounting
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
TaxAct Business leads by twenty-eight points.
TaxAct Business28%#1 of 9Vertex0%#– of 9Mid-marketThe figures above
TaxAct Business leads by nine points.
TaxAct Business13%#3 of 9Vertex4%#5 of 9Enterprise
TaxAct Business is not named for this buyer.
Vertex2%#7 of 9TaxAct Business—not namedWhat the models said about TaxAct Business
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Three of four in this category shown.
“TaxAct Business \u2013 Best Value for Small Companies ... at ~$170-280/year is your most cost-effective option” Kimi K2 · budget prompt · first choice
“Top Recommendation: TaxAct Business ... Often cited as the most cost-effective professional-grade option.” Qwen 3.7 Flash · budget prompt · first choice
“TaxAct Business is generally considered the best value for small businesses with limited budgets” Mistral Small · budget prompt · first choice
What the models said about Vertex
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. One of one in this category shown.
“Vertex - a comprehensive tax compliance software that can handle complex tax logic and is used by large and mid-market companies.” Llama 4 Maverick · paraphrase prompt · first choice
Also compared
Thomson Reuters ONESOURCE Tax Provision vs TaxAct BusinessThomson Reuters ONESOURCE Tax Provision vs VertexBloomberg Tax Provision vs TaxAct BusinessBloomberg Tax Provision vs VertexTaxAct Business vs Longview TaxTaxAct Business vs Sovos Tax ProvisionLongview Tax vs VertexVertex vs Sovos Tax ProvisionAll fifteen 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.