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Technologies / Anthropic / TaxJar

Companies using Anthropic and TaxJar

7 companies in our data have public evidence for both Anthropic and TaxJar, and 6 name both in their own subprocessor list. Each company below links to the source for every claim. Our coverage is partial, so this is not everyone.

7companies use both
under 1%of Anthropic users
70%of TaxJar users
6name both as subprocessors

Companies using one are 5.7 times as likely as the average company in our data to show evidence of the other.

The companies

Strongest evidence first: a company naming both in its own subprocessor list comes before one seen on its website or in job postings.

Subprocessor listPrivacy policyWebsiteJob postings

CompanyAnthropicTaxJar
Arternalarternal.comARTERNAL provides gallery management software for tracking collector relationships, inventory, viewing rooms, invoicing, and websites.Sales
Measuregetmeasure.comMeasure provides billing and revenue operations software that connects contracts, usage metering, billing, revenue recognition, commissions, and reporting in one system.Finance and accounting software
Vendastavendasta.comVendasta provides AI employees for local businesses that handle marketing, sales, and customer engagement tasks.AI and machine learning
webflow.comWebflow provides tools to build, manage, and grow a website.Design and creative
WorkWaveworkwave.comWorkWave provides field service management software, including products like PestPac, RealGreen, and WinTeam, along with fintech tools and business analytics.Data and analytics
ZAGENOzageno.com
AgentTaxagenttax.ioAgent Tax provides real-time sales tax calculation, economic nexus monitoring, and 1099-DA reporting for AI agent transactions across US states and local jurisdictions.Fintech

The two technologies

Anthropic

AI and LLM providers

Anthropic is a public benefit corporation dedicated to securing the benefits of AI and mitigating its risks. It is used for the responsible development and maintenance of advanced AI for the long-term benefit of humanity.

Summarized from anthropic.com on 8 Nov 2026.

under 1% of the 2,890 companies we see using Anthropic also show the other.

All 2,890 companies using Anthropic2,221 name it as a subprocessorMore in AI and LLM providers

TaxJar

Finance and ERP

TaxJar is a sales tax compliance platform. It is used to automate the sales tax lifecycle, from calculations to filing, across sales channels.

Summarized from taxjar.com on 8 Nov 2026.

70% of the 10 companies we see using TaxJar also show the other.

All 10 companies using TaxJar9 name it as a subprocessorMore in Finance and ERP

Other pairs

Companies with their own evidence for both.

More with Anthropic

Cloudflare2,890companiesGoogle Workspace2,119companiesOpenAI1,985companiesAmazon Web Services1,554companiesStripe1,521companiesGoogle1,406companies

More with TaxJar

Cloudflare10companiesAmazon Web Services9companiesGoogle7companiesGoogle Workspace7companiesStripe7companiesSentry6companies

Questions

How many companies use both Anthropic and TaxJar?

7 companies in StrataDB's data have public evidence for both, and 6 of them name both in their own subprocessor list, the strongest evidence we hold. Our coverage is partial, so the real number is higher.

Which companies use Anthropic and TaxJar?

Arternal, Measure, Vendasta, webflow.com and WorkWave, and 2 more companies. Each one links to the evidence behind it.

How does StrataDB know a company uses Anthropic and TaxJar?

From four kinds of public evidence: subprocessor lists, privacy policies, website code and job postings. Each is kept apart with its source and the date we saw it. A company missing here means we found no evidence, not that it does not use them.

Find every company using Anthropic and TaxJar

See the full list with the source for each company, and run the same lookup for any technology from the API, Claude or your browser.

  • Every company and vendor, with its public source
  • 100 API calls a month, plus MCP and the Chrome extension
  • Work email only. No card, no sales call