| Category | Function | Share | Rank | Negative rate | Labels | Quadrant | Since September 2026 |
|---|---|---|---|---|---|---|---|
| Sales tax automation | Tax and compliance | 11% | 4 of 37 | 24% | 62 | accepted challenger | ▲+13Since September 2026: 0% → 13%, +13 points. Past the 10-point floor: movement. Read over the models both editions asked. |
| Global e-invoicing compliance | Tax and compliance | 0% | 52 of 136 | 20% | 5 | under 10 labels · led by Avalara E-Invoicing at 25% | ▼−2Since September 2026: 2% → 0%, −2 points. Inside the 10-point floor: within noise. Read over the models both editions asked. |
| Merchants of record | Receivables and billing | 0% | 21 of 45 | 0% | 2 | under 10 labels · led by Paddle at 28% | |
| Corporate tax provision | Tax and compliance | 0% | 97 of 102 | 100% | 1 | under 10 labels · led by Thomson Reuters ONESOURCE Tax Provision at 21% | =heldSince September 2026: 0% → 0%, ±0 points. Inside the 10-point floor: within noise. Read over the models both editions asked. |
| Category | September 2026 | Now | Change | Reading | Rank |
|---|---|---|---|---|---|
| Sales tax automation | 0% | 13% | ▲+13Since September 2026: 0% → 13%, +13 points. Past the 10-point floor: movement. Read over the models both editions asked. | Moved past the floor | Rank 8 → 4 of 37 |
| Global e-invoicing compl | 2% | 0% | ▼−2Since September 2026: 2% → 0%, −2 points. Inside the 10-point floor: within noise. Read over the models both editions asked. | Within noise | Rank 18 → 52 of 136 |
| Merchants of record | 0% | 0% | newNew since September 2026: not ranked then, 0% now. | New this edition | Rank 21 of 45, unchanged |
| Corporate tax provision | 0% | 0% | =heldSince September 2026: 0% → 0%, ±0 points. Inside the 10-point floor: within noise. Read over the models both editions asked. | Within noise | Rank 82 → 97 of 102 |
Shares here are read over the models both editions asked, so they can differ by a point or two from the standing above, which counts every model in this edition.
The floor is 10 points of share, measured: how far the models move a leader on their own when the same questions are asked twice with nothing changed. A larger change is movement; a smaller one is noise, and both are shown. Movement is read over the twelve models both editions asked; GPT-6 Luna, Muse Glimmer 30B joined this edition and are in the standing but not yet in the comparison. How the floor is measured · The editions
| Model | First choice | Alternative | Mention | Negative | Labels |
|---|---|---|---|---|---|
| Claude Haiku 4.5 | 0 | 1 | 1 | 1 | 3 |
| GPT-5.4 mini | 1 | 2 | 0 | 2 | 5 |
| Gemini 3.5 Flash | 0 | 3 | 2 | 1 | 6 |
| Perplexity Sonar | 1 | 2 | 1 | 1 | 5 |
| Grok 4.1 Fast | 1 | 2 | 1 | 2 | 6 |
| Mistral Small | 1 | 2 | 1 | 1 | 5 |
| DeepSeek V4 Flash | 0 | 1 | 1 | 4 | 6 |
| Llama 4 Maverick | 0 | 1 | 4 | 0 | 5 |
| Qwen 3.7 Flash | 1 | 1 | 1 | 0 | 3 |
| Kimi K2 | 0 | 5 | 2 | 1 | 8 |
| GLM 4.7 FlashX | 1 | 1 | 2 | 0 | 4 |
| MiniMax M2.5 | 1 | 3 | 0 | 1 | 5 |
| GPT-6 Luna | 0 | 2 | 1 | 1 | 4 |
| Muse Glimmer 30B | 0 | 2 | 1 | 2 | 5 |
Verbatim evidence the judge attached to positive labels.
“TaxJar (now part of Stripe Tax) stands out as one of the most affordable and highly rated sales tax compliance software options” Grok 4.1 Fast · Sales tax automation · budget prompt · first choice
“TaxJar is the strongest default choice because it is repeatedly positioned as a fit for small businesses/SMBs” Perplexity Sonar · Sales tax automation · budget prompt · first choice
“For many small ecommerce sellers, TaxJar or Stripe Tax provide a good balance of simplicity and automation.” GLM 4.7 FlashX · Sales tax automation · comparative prompt · first choice
“Known for automating the full sales tax lifecycle... especially suitable for small ecommerce sellers” Mistral Small · Sales tax automation · budget prompt · first choice
Verbatim evidence attached to negative labels. A warning on a product with few labels is a warning; on a product with many, it is one voice among them.
“Avalara and TaxJar are described as better aligned to sales/use tax than income tax provision-to-return traceability, so they can be a poor fit for provision teams.” Perplexity Sonar · Corporate tax provision · negative prompt · hard negative
“it lacks depth in global invoicing and may not handle local compliance nuances well, making it a risky choice for international operations” Mistral Small · Global e-invoicing compl · negative prompt · hard negative
“Multiple sources indicate significant degradation since the acquisition... current user feedback suggests TaxJar may frustrate you.” Kimi K2 · Sales tax automation · negative prompt · hard negative
“TaxJar users have reported that the company openly admits their reporting is broken with no plans to fix it” Claude Haiku 4.5 · Sales tax automation · negative prompt · hard negative
Citations exist only for the models that return a source list, five of the fourteen in this edition, so these counts come from 174 of the 185 answers that named TaxJar and are not a share of its labels.
727 of the 816 domain citations in answers naming TaxJar came from somebody else's page.
Pages are listed as the models cited them.
Search figures are US estimates from DataForSEO, read September 28, 2026; AI search demand is its modeled, directional estimate, not a count of queries to any assistant. The answers are this edition's. Two measurements side by side: neither is read as the cause of the other.
| Kind | Pages | Last 90 days | 2025-10 to 2026-09 | Latest | Categories named |
|---|---|---|---|---|---|
| Blog | 776 | 10 | 2026-09-24 | Sales tax automation | |
| Comparison | 15 | 3 | 2026-09-17 | ||
| Case study | 13 | undated | |||
| Glossary or explainer | 11 | 0 | 2026-01-04 | ||
| Template or tool | 6 | 0 | 2025-12-11 | ||
| Webinar or virtual event | 4 | 2 | 2026-09-25 | ||
| Podcast or video | 3 | undated | |||
| Conference or event | 1 | undated | |||
| Report or ebook | 1 | undated |
Every page taxjar.com exposes, subdomains included. Kind is read from the address and title. The last 90 days, the latest date and the twelve months count pages by when they were published, from the site's feeds, a date in the address, or the page's own publication date, read from up to a hundred of its most recently changed pages; a page that says only when it last changed is counted in its kind but not in when, so the recent counts are a floor, and a kind none of whose pages gives a publication date reads undated. An event counts as online when its address or title says so (webinar, on demand, virtual or online summit); a conference, summit, trade show, expo or roadshow that does not say so is counted as a conference or event, which on a vendor's site is mostly in person. Read September 29, 2026.
An email the morning each edition publishes: where this product moved, where it held, and by how much against the noise floor. One address, confirmed by a click; a stop link in every email.
Already following? Everything you follow, with a stop for each.
What TaxJar's own pages state, read September 28, 2026: taxjar.com, taxjar.com/pricing, taxjar.com/security, taxjar.com/product/api, taxjar.com/customers. A claimed page can correct any of them.
Claiming is free and changes nothing in the data. A claimed page shows a verified contact who is told when each edition publishes and when TaxJar's standing changes by more than the noise floor; the right to propose corrections to the vendor table, meaning names the judge wrote that should or should not read as TaxJar, applied by version and listed in the change log; and a one-line description supplied by the vendor and marked as such.
A new claim receives the current edition's vendor brief for TaxJar by email, built from the raw record of the edition. It shows: