# TaxJar > TaxJar is Stripe's US sales tax service for businesses that sell across states. Its REST API calculates tax for an order, looks up rates by address, records orders and refunds for reporting, and stores exempt customers. - Canonical: https://www.anchorterminal.com/tools/taxjar - Markdown: https://www.anchorterminal.com/tools/taxjar.md (~8,750 tokens) - Slim: https://www.anchorterminal.com/tools/taxjar.min.md (~2,030 tokens, same facts, less prose, for token-sensitive contexts) - JSON: https://www.anchorterminal.com/tools/taxjar.json (this page as data, same URL with Accept: application/json) - Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt) - API: https://www.anchorterminal.com/api/v1/index.json - Updated: 2026-10-08 ## Overview **Grade C · 57.6/100 · rank #417 of 629 · #4 in Tax calculation & compliance · not agent-ready · confidence medium** ## Assessment A 21-operation REST API with a no-card 30-day trial, caller-chosen transaction IDs that make order pushes safe to repeat, and no status-page incident since March 2026. No OpenAPI spec or llms.txt was found, the API changelog stops at January 2022, tokens carry no scopes, and calculation is US-only for new accounts. ## Facts | Field | Value | | --- | --- | | Vendor | TaxJar (Stripe) (https://www.taxjar.com) | | Kind | HTTP API | | Category | Tax calculation & compliance (https://www.anchorterminal.com/categories/tax) | | Transport | HTTP | | Endpoint | `https://api.taxjar.com/v2` | | Auth | API key · A self-serve API token, generated by a signed-in user at Account > TaxJar API in the web app and sent as `Authorization: Bearer `. The token has no scopes and covers every endpoint for that account, deletes included. API access needs the Professional plan or the 30-day trial. The sandbox takes its own token. No OAuth, app review or partner approval applies. | | Pricing | Paid ($99 / mo) · The API needs the Professional plan, from $99 a month at 200 orders, with higher order tiers on a selector. Each calculation or rate lookup counts as a tenth of an order, errors included. A 30-day trial with API access needs no card, so an agent's owner can start without a contract. The sandbox comes with Professional plans (checked 2026-10-08). | | x402 | No · No x402, MPP or L402 in the API reference, the API guides or the pricing page (checked 2026-10-08). | | Licence | Proprietary service under TaxJar's terms of service and API licence agreement. The official API clients on GitHub are MIT | | Packages | npm: `taxjar`; pypi: `taxjar` | | Source | https://github.com/taxjar/taxjar-node | | Docs | https://developers.taxjar.com/api/reference/ | | llms.txt | not found | | Last release | 2026-09-02 | | GitHub stars | 57 (as of 2026-10-08) | | npm downloads / week | 95,036 | | PyPI downloads / week | 49,713 | | API | REST at https://api.taxjar.com/v2, JSON, 21 operations. Taxes 1, rates 1, summarised rates 1, categories 1, nexus regions 1, address validation 1, order transactions 5, refund transactions 5, customers 5 | | Coverage | United States sales tax with street-level rates. International calculation only for accounts that already have it, and the docs refer other countries to Stripe Tax | | Credentials | One API token from Account > TaxJar API in the web app, sent as `Authorization: Bearer ` or `Authorization: Token token=""`. No scopes. A separate token for the sandbox | | Access | Self-serve. The 30-day trial includes the API with no card. After the trial the API needs the Professional plan, and the Starter plan has none | | Plans | Starter from $39 a month and Professional from $99 a month, both at 200 orders a month, with higher order tiers on a selector (Professional 500 orders $249, 1,000 orders $499). Annual billing is 10 per cent or more lower (https://www.taxjar.com/pricing) | | Metering | A calculation or rate lookup counts as a tenth of an order, errors included. Going over the tier bills the difference to the tier used for that month (flex fee). AutoFile returns beyond the included credits are $50 on Starter and $55 on Professional | | Sandbox | https://api.sandbox.taxjar.com on Professional plans. Seven endpoint groups supported, transactions stubbed, address validation unsupported, `X-TJ-Expected-Response` mocks errors | | Rate limits | 10,000 requests a minute on Professional, 25,000 on Premium. 429 on excess. No Retry-After header is documented | | Errors | JSON body with `error`, `detail` and `status`. Codes 400, 401, 403, 404, 405, 406, 410, 422, 429, 500 and 503 are listed, with causes and fixes for 400, 401, 403, 406 and 422 | | Versioning | `x-api-version` header with 2012-01-01, 2020-08-07 and 2022-01-24. New accounts default to 2022-01-24 since 3 February 2022. An invalid value is ignored | | Lists | Order and refund lists filter by `transaction_date` or a date range and by `provider`, and return IDs only. The customer list takes no parameters. No pagination is documented | | Exemptions | Customer records with `exemption_type` (wholesale, government, other, non_exempt) and `exempt_regions`, referenced by `customer_id` on calculations and transactions. Order-level `exemption_type` also accepts marketplace | | SDKs | Node taxjar 5.0.0 (npm, 2 September 2026), .NET TaxJar 5.0.0 (NuGet, 4 August 2026), Python taxjar 2.0.1 (14 April 2025), PHP taxjar/taxjar-php 2.0.1 (8 May 2025), Ruby taxjar-ruby 3.0.4 (22 August 2022), Java and Go. MIT | | Certifications | SOC 2 Type 2 per taxjar.com/security, with yearly re-audits announced in March 2021. Annual penetration testing. No bug bounty page for TaxJar was found | | Status | status.taxjar.com on Statuspage, seven components (Tax Calculations API, Tax Rates API, Transaction Push API, Other API Services, Reporting, AutoFile and the API group) with incident history | | Sub-processors | List updated 26 June 2026. Amazon Web Services, Help Scout, Appcues, Sprout Social and Sprinklr (United States), TDCX (Malaysia), and Stripe, LLC and affiliates | | Capabilities | tax.calculate, tax.transactions, tax.exemptions, shipping.address-validation | | Tags | hosted, closed-source, api-key, sandbox, no-card, python, typescript, ruby, php, java, go, dotnet, status-page, soc2 | | JSON | https://www.anchorterminal.com/api/v1/tools/taxjar.json | ## Score breakdown (methodology v0.4, October 2026 research run) Assessed 2026-10-08 from public evidence against the published checklist (https://www.anchorterminal.com/benchmark/#checklist). Confidence: medium. Performance and Task success pending (no score, not in the total); the total is Σ(score × weight) ÷ 80 over the 7 assessed categories. "This run" is each category's share of the 100 points. | Category | Weight | This run | Score (0–100) | Points | | --- | --- | --- | --- | --- | | Reliability | 16% | 20 | 84 | 16.8 | | Performance | 10% | pending | pending | n/a | | Schema & documentation | 13% | 16.2 | 48 | 7.8 | | Agent ergonomics | 13% | 16.2 | 61 | 9.9 | | Security & auth | 14% | 17.5 | 43 | 7.5 | | Payments & pricing | 10% | 12.5 | 30 | 3.8 | | Task success | 10% | pending | pending | n/a | | Maintenance & community | 7% | 8.8 | 64 | 5.6 | | Transparency & trust (editorial 55, provenance 87) | 7% | 8.8 | 71 | 6.2 | | Negative events | up to −15 | up to −15 | none recorded | 0 | | **Total** | | | | **57.6 → C** | ### Why each score - Reliability 84: Read with the hosted lines and scored on the public REST API at api.taxjar.com, the surface an agent would call. TaxJar has no MCP server. status.taxjar.com on Statuspage lists seven components with incident history (20). No incident in the 90 days to 8 October 2026. The last two were an integration fault on 26 March 2026 and a degraded API on 28 February 2026, when calls with a `customer_id` returned 5xx for about 4 hours 50 minutes (30). Rate limits with numbers, 10,000 requests a minute on Professional and 25,000 on Premium (15). The docs list 429 and advise caching, calculating only in nexus states and falling back to summarised rates. No Retry-After header or backoff guidance was found. Writes are keyed on a caller-chosen `transaction_id`, a duplicate create returns 422 and the docs direct a PUT (9 of 15). No uptime SLA was found. The published SLA covers support response times only, and the terms supply the API as is (0). The API is at v2 and generally available (10). - Performance: Pending. Latency is measured per call by our probes, which haven't run yet, so this run doesn't score it. Its weight is shared across the assessed categories until the first probe window closes. - Schema & documentation 48: No OpenAPI spec was found. The taxjar/openapi repository on GitHub holds only a README, last changed in May 2020. The Node client ships TypeScript parameter and return types, which we counted as a partial contract (4 of 25). No llms.txt on developers.taxjar.com or www.taxjar.com, both 404 (0). The reference is one page covering 21 operations, with notes on sourcing, nexus and exemptions, and guides on product tax codes, marketplaces and avoiding unnecessary calls. Few entries say when not to use an endpoint (12 of 20). Parameter tables give a type and required, conditional or optional for each field, with allowed values for `exemption_type` in prose. Constraints such as amount arithmetic are enforced only on newer API versions (9 of 15). Request and response examples for every operation in cURL and seven client languages, an error code table, causes and fixes for 400, 401, 403, 406 and 422, and a sandbox header that mocks errors (13 of 15). Versions are dated and set by the `x-api-version` header, with a public changelog whose newest entry is 24 January 2022 (10 of 15). - Agent ergonomics 61: Responses are small JSON objects and list calls return IDs only, but there is no field selection and `summary_rates` returns every region at once (12 of 25). Order and refund lists filter by `transaction_date`, a date range and `provider`. No pagination or page size is documented, and the customer list takes no parameters (8 of 20). Errors are JSON with `error`, `detail` and `status`, which we confirmed on a 401, and five codes have documented causes and fixes (15 of 20). Calculations have no side effects beyond metering. Orders, refunds and customers use caller-chosen IDs, so a repeated create returns 422 and can be turned into a PUT. No idempotency header exists (13 of 20). A calculation needs `to_country`, `to_zip`, `to_state` and `shipping`, with nexus read from the account, and official clients cover seven languages, though the Ruby gem dates from August 2022 and the Java and Go repositories were last pushed in 2023 (13 of 15). - Security & auth 43: One API token per use, generated in the web app and sent in the `Authorization` header, never in the URL. It has no scopes and covers every endpoint. The docs mention generating a new token, but we found no statement on how many tokens an account can hold or how one is revoked, so we scored between a single all-powerful key and plain revocable keys (15 of 30). No read-only token and no confirmation step on deleting transactions or customers. The sandbox takes a separate token, and user roles exist for web app logins on Professional (4 of 20). Responses carry tax figures, jurisdiction names and the account's own stored customer and order data, with little third-party text (9 of 15). Plans & Billing shows transaction counts, and no per-request API log was found in the reviewed documentation (3 of 15). SOC 2 Type 2 per the security page, with yearly re-audits announced in March 2021, annual penetration testing and AES-256 at rest. No security.txt on TaxJar hosts and no disclosure policy or bounty page for TaxJar was found (12 of 20). - Payments & pricing 30: Read with the hosted rubric. No x402, MPP or L402 (0). Plan prices are public, Professional from $99 a month at 200 orders, with a stated conversion of ten calculations to one order. Higher tiers sit on a selector, and the Premium plan named in the rate-limit docs has no public price. That is plan pricing (10 of 20). A 30-day trial with Professional plan access and the API needs no card (20). A person has to sign up in a browser and generate the token in the web app (0). - Task success: Pending. Task success needs the category task suites run through each tool, which haven't run yet, so this run doesn't score it. Its weight is shared across the assessed categories until then. A data provider's data-quality score is published on its listing now and becomes half of this category when it's scored. - Maintenance & community 64: A closed service, so we read releases from the official clients. The Node client 5.0.0 reached npm on 2 September 2026, 36 days before the check (20 of 30). In the 90 days to 8 October 2026 there were also .NET 5.0.0 on NuGet on 4 August, the Magento extension 4.0.2 on 3 August and WooCommerce plugin tags on 2 September, 9 September and 5 October. None is an API change, and the API changelog has no entry since 24 January 2022 (20). Support is by email with a published response time of one business day on Professional, though the API licence agreement promises no API support. GitHub issues are open on the client repositories, 8 on Node and 19 on .NET, and we didn't measure reply times (8 of 15). Seven official clients, four released since April 2025. The Ruby gem dates from August 2022, and the Java and Go repositories were last pushed in 2023 (11 of 15). The Node repository runs CodeQL only, with no test workflow in public CI, and its 5.0.0 release dropped a deprecated dependency (5 of 10). - Transparency & trust 71: The service is closed under terms of service and an API licence agreement last updated 14 May 2026. The clients are MIT (15 of 30). The privacy policy dates from 7 January 2022 and gives no fixed retention period. The data processing agreement of 14 May 2026 promises deletion or return of personal data after termination at the customer's choice, and notice of a data incident without undue delay. The documents agree but name no periods (18 of 30). No deprecation policy was found. Three dated API versions remain accepted, and the terms promise 30 days' notice of changes to terms and prices. International calculation was closed to new customers with no dated notice in the reviewed pages (5 of 20). The sub-processor list, updated 26 June 2026, names seven processors with purpose and country, and the privacy policy says the service is hosted in the United States (17 of 20). Fix list for a coding agent, everything this grade says the listing lacks, the biggest gain first (21 items): https://www.anchorterminal.com/fixes/taxjar.md (JSON https://www.anchorterminal.com/fixes/taxjar.json) ### What we couldn't check - unchecked: how many API tokens an account can hold and how a token is revoked or rotated. The docs say only that a new token can be generated at Account > TaxJar API, and we didn't sign up. - unchecked: prices for Professional tiers above 1,000 orders and for the Premium plan. The pricing page shows the 200-order tier and a selector, and Premium appears only in the rate-limit docs. - unchecked: whether 429 responses carry a Retry-After header. The docs don't mention one and we didn't trigger a 429. - unchecked: whether the web app keeps a per-request API log. The docs mention only transaction counts under Plans & Billing. - unchecked: whether Stripe's HackerOne programme covers taxjar.com hosts. No disclosure policy was found on TaxJar's own pages. - unchecked: current versions of the Java and Go clients on their registries. Their repositories were last pushed in May and October 2023. - unchecked: the role names and permissions under Users & Roles. The help centre article shows them only in screenshots. - The product page claims 99.999 per cent historical uptime and sub-20ms response times. These are vendor claims and no uptime SLA was found. - The sandbox article, last updated 28 September 2021, says address validation is unsupported there. We didn't test the sandbox. - No vendor MCP server was found, and the official MCP registry has no taxjar entry. - The Node client's changelog dates 5.0.0 to 3 February 2026, while npm shows it published on 2 September 2026. We used the npm date for the last release. - The API has no filing endpoint, so `tax.filing` was left out of the capabilities although TaxJar sells AutoFile in its web app. ### Sources - home page: (seen 2026-10-08) - pricing and plan comparison: (seen 2026-10-08) - API reference, authentication, versions, billing, countries, sandbox, rate limits, errors and changelog: (seen 2026-10-08) - API guides: (seen 2026-10-08) - developer blog (newest post 22 December 2017): (seen 2026-10-08) - llms.txt on the developer site (404): (seen 2026-10-08) - API product page, vendor uptime and latency claims: (seen 2026-10-08) - trial signup page: (seen 2026-10-08) - unauthenticated request to the API (401 body): (seen 2026-10-08) - help centre, plan costs: (seen 2026-10-08) - help centre, order tiers and API metering: (seen 2026-10-08) - help centre, flex fees: (seen 2026-10-08) - help centre, API errors and the order limit: (seen 2026-10-08) - help centre, API plan requirement: (seen 2026-10-08) - help centre, getting an API token: (seen 2026-10-08) - help centre, countries supported: (seen 2026-10-08) - help centre, sandbox endpoints: (seen 2026-10-08) - help centre, support SLA: (seen 2026-10-08) - help centre, accuracy and filing guarantee: (seen 2026-10-08) - help centre, users and roles: (seen 2026-10-08) - status page summary: (seen 2026-10-08) - status incident history: (seen 2026-10-08) - security page: (seen 2026-10-08) - SOC 2 Type 2 announcement (18 March 2021): (seen 2026-10-08) - terms of service and API licence agreement: (seen 2026-10-08) - privacy policy: (seen 2026-10-08) - data processing agreement: (seen 2026-10-08) - sub-processor list: (seen 2026-10-08) - TaxJar and Stripe Tax comparison: (seen 2026-10-08) - about page: (seen 2026-10-08) - security.txt on the TaxJar site (404): (seen 2026-10-08) - security.txt on stripe.com: (seen 2026-10-08) - vendor repositories: (seen 2026-10-08) - Node client repository and changelog: (seen 2026-10-08) - .NET client repository and changelog: (seen 2026-10-08) - OpenAPI repository (README only): (seen 2026-10-08) - WooCommerce plugin tags: (seen 2026-10-08) - Magento extension tags: (seen 2026-10-08) - npm package: (seen 2026-10-08) - npm weekly downloads: (seen 2026-10-08) - PyPI package: (seen 2026-10-08) - PyPI recent downloads: (seen 2026-10-08) - NuGet package: (seen 2026-10-08) - RubyGems package: (seen 2026-10-08) - Packagist package: (seen 2026-10-08) - official MCP registry search: (seen 2026-10-08) - domain registration (RDAP): (seen 2026-10-08) ## Who's behind it (provenance 87/100, checked 2026-10-08) | Check | Finding | Points | | --- | --- | --- | | Legal entity named | TPS Unlimited, Inc. (d/b/a TaxJar, a wholly owned subsidiary of Stripe, Inc.) | 20/20 | | Domain age | taxjar.com, registered 2012-03-02 (14 years) | 15/15 | | Endpoint on the vendor's domain | api.taxjar.com | 15/15 | | Terms of service | read, states 6 of the 7 things a reader expects, and has 1 clause that costs points | 7.1/10 | | Privacy policy | read, states 8 of the 8 things a reader expects | 10/10 | | Status page | status.taxjar.com | 10/10 | | Changelog | published | 10/10 | | security.txt | not found | 0/10 | The terms of service and the API licence agreement on the same page (last updated 14 May 2026) are with TPS Unlimited, Inc. d/b/a TaxJar. The data processing agreement of the same date calls it a wholly owned subsidiary of Stripe, Inc. The privacy policy (last updated 7 January 2022) gives TPS Unlimited, Inc., 462 Washington St. #3066, Woburn, Massachusetts 01888, and adds (A Stripe Company). The about page says Stripe acquired TaxJar in 2021. Stripe is listed separately on Anchor Terminal. TaxJar keeps its own API, account system, terms and status page, and its sub-processor list names Stripe, LLC and affiliates for billing. The API host is api.taxjar.com and the sandbox api.sandbox.taxjar.com. RDAP gives a registration date of 2012-03-02 for taxjar.com, with Com Laude as registrar. www.taxjar.com/.well-known/security.txt and api.taxjar.com/.well-known/security.txt return 404. stripe.com serves a valid security.txt that points to HackerOne, and we didn't establish whether that programme covers TaxJar hosts. The changelog is a section of the API reference page, and its newest entry is dated 24 January 2022. ### Terms and privacy, as read A reading by a fixed set of rules, each answered with the vendor's own sentence. Not legal advice. **Terms of service** (https://www.taxjar.com/terms-of-service), read 2026-10-08, dated 2026-05-14, states 6 of the 7 things a reader expects. - To know. Restricts benchmarking or competitive use (costs points). "(F) use the API to create a product or service that is competitive with any TaxJar Service." - To know. Says access can be ended without notice or for any reason. "Subject to earlier termination as provided below, TaxJar may terminate your account and this Agreement at any time by providing notice to the administrative email address associated with your account." - Gives the date it was last updated. Last updated 2026-05-14. - Names the governing law or courts. Disputes go to the courts of San Diego County, California. - Says how changes to the terms are announced. Gives thirty days of notice before a change. - Not found in the text. Refers to a service level or uptime commitment. - Also in the text (2026-10-08). The API licence bars using the API on behalf of any third party, bulk downloading or crawling, and caching or storing the tax content it returns. "use the API on behalf of any third party; attempt or provide a means to execute any “bulk download” operations, including without limitation by “crawling” the API or Content; cache or otherwise store any Content and/or modify any Content;" - Also in the text (2026-10-08). TaxJar may use data about and derived from customer content to improve its services and other TaxJar offerings, during and after the term. "TaxJar will be free (during and after the Term) to (i) use such information and data to improve and enhance the Services and for other development, diagnostic and corrective purposes in connection with the Services and other TaxJar offerings" - Also in the text (2026-10-08). TaxJar may permanently delete all customer content when an account is terminated. "All of Your Content on the Service (if any) may be permanently deleted by TaxJar upon any termination of your account in its sole discretion." **Privacy policy** (https://www.taxjar.com/privacy), read 2026-10-08, dated 2022-01-07, states 8 of the 8 things a reader expects. - To know. Has not been updated for three years or more. "​​Last updated: January 7, 2022" - Gives the date it was last updated. Last updated 2022-01-07. - Says whether personal data is sold or shared for advertising. Says it does not sell personal data. - Gives a privacy contact. Gives an email address, hidden from our reader by the page. - Says where data is transferred or stored. Relies on standard contractual clauses. ## Live (updated 2026-10-08 18:22 UTC) - Right now: up, HTTP 404, 263 ms, checked 2026-10-08 18:20 UTC (get on `https://api.taxjar.com/v2`) - Uptime 24h 100.0% (33 probes) · 30 days 100.0% (33 probes) · p50 264 ms · p95 336 ms - Vendor status page: none, All Systems Operational - github `taxjar/taxjar-node` v5.0.0, released 2026-02-03 - npm `taxjar` 5.0.0 - pypi `taxjar` 2.0.1, released 2025-04-14 - security.txt: none - Watching changelog - Always current: https://www.anchorterminal.com/api/v1/live/taxjar.json ## Probe metrics Not measured yet. Our benchmark probes haven't run, so there's no availability, latency or error rate from a run and Performance is pending. Live uptime, where we poll the endpoint, is under Live and doesn't change the score. ## Prices | Item | Price | Unit | Note | | --- | --- | --- | --- | | Professional, 200 orders a month | $99 | per month (plan) | the plan with API access; a calculation or rate lookup counts as a tenth of an order | | Professional, 500 orders a month | $249 | per month (plan) | per the flex fee article | | Professional, 1,000 orders a month | $499 | per month (plan) | per the flex fee article | | Starter, 200 orders a month | $39 | per month (plan) | no API access | | AutoFile return beyond included credits, Professional | $55 | per transaction | four credits a year included; $50 on Starter | Across all listings: https://www.anchorterminal.com/prices/index.md ## Strengths - 30-day trial with Professional plan access, the API included, and no card needed at signup - Orders and refunds take a caller-chosen `transaction_id`. A duplicate create returns 422 and the docs direct a PUT update - status.taxjar.com lists seven components and no incident since 26 March 2026 - Rate limits published as 10,000 requests a minute on Professional and 25,000 on Premium - Official clients for seven languages. The Node client reached 5.0.0 on npm on 2 September 2026 and .NET 5.0.0 on NuGet on 4 August 2026 ## Weaknesses - No OpenAPI spec or llms.txt was found. The taxjar/openapi repository on GitHub holds only a README - The API changelog's last entry is 24 January 2022, and no deprecation policy was found - Calculation covers the United States only for new accounts. The docs point other countries to Stripe Tax - API tokens carry no scopes or read-only mode, and the same token can delete transactions and customers - Calls that return an error still count as a tenth of an order against the plan, per the help centre ## Before you call it (notes for agents) 1. Send `x-api-version: 2022-01-24` on every call. Accounts opened before 3 February 2022 default to an older version with weaker validation 2. Pass `nexus_addresses[]` or keep nexus states in the account. Without nexus the API returns zero tax and reports no error 3. Create orders with your own `transaction_id`. On 422 the order already exists, so send a PUT to update it 4. Post JSON with `Content-Type: application/json`. Form-encoded arrays such as `line_items[]` can return 406 5. Cache calculations and skip states without nexus. Each calculation or rate lookup counts as a tenth of an order, errors included ## Connect Install: ```bash npm install taxjar ``` First request: ```bash curl https://api.taxjar.com/v2/categories \ -H "Authorization: Bearer ${TAXJAR_API_KEY}" ``` Through letme (picks today, calling later): https://letme.dev/taxjar. letme answers with the pick and how to call it direct; calling through letme (one key, the vendor's own price) comes later. How it works: https://www.anchorterminal.com/letme/index.md ## Similar tools Ranked by shared capabilities, then score. Same-category tools with no shared capability key are listed last. | Tool | Grade | Score | Rank | Shared capabilities | x402 | Markdown | | --- | --- | --- | --- | --- | --- | --- | | Avalara AvaTax | B | 68.8 | 162 | tax.calculate, tax.transactions, tax.exemptions | no | https://www.anchorterminal.com/tools/avalara.md | | Anrok | C | 61.6 | 321 | tax.calculate, tax.transactions, tax.exemptions | no | https://www.anchorterminal.com/tools/anrok.md | | Vertex O Series | C | 54.7 | 464 | tax.calculate, tax.transactions, tax.exemptions | no | https://www.anchorterminal.com/tools/vertex-tax.md | | Quaderno | C | 59.5 | 377 | tax.calculate, tax.transactions | no | https://www.anchorterminal.com/tools/quaderno.md | | Easyship | B | 68.8 | 163 | shipping.address-validation | no | https://www.anchorterminal.com/tools/easyship.md | | Sendcloud | B | 62 | 314 | shipping.address-validation | no | https://www.anchorterminal.com/tools/sendcloud.md | ## Panel reviews (0) Reviewed by the Anchor panel (https://www.anchorterminal.com/reviewers/index.md): . Desk reviews, written from public documentation, pricing, terms, source and status history on 1 October 2026. No calls made. For a desk review, the outcome says whether the reviewer's questions could be answered from public material: success, partial or failure. How reviews work: https://www.anchorterminal.com/reviews/how-it-works.md ## Notable - The API answers at https://api.taxjar.com/v2 with 21 operations across categories, taxes, order and refund transactions, customers, rates, nexus regions, address validation and summarised rates (source: ) - The reference lists the United States as the only supported country and says international calculation works only for accounts that already have it. The help centre says it isn't sold to new customers (source: ) - API access needs the Professional plan, from $99 a month at 200 orders. Each calculation or rate lookup counts as a tenth of an order, and transaction pushes aren't counted as calculations (source: ) - The 30-day trial includes Professional plan access with the API and asks for no card (source: ) - A sandbox at https://api.sandbox.taxjar.com comes with Professional plans. Transaction endpoints return stubbed responses there, address validation isn't supported, and an `X-TJ-Expected-Response` header mocks error codes (source: ) - Versions are chosen with the `x-api-version` header from 2012-01-01, 2020-08-07 and 2022-01-24. The changelog on the reference page ends at 24 January 2022 (source: ) - No vendor MCP server was found, and the official MCP registry returns no entry for taxjar (source: ) - The data processing agreement of 14 May 2026 describes TPS Unlimited, Inc. d/b/a TaxJar as a wholly owned subsidiary of Stripe, Inc. (source: ) - Filing (AutoFile) and state registrations are run from the TaxJar web app. The API has no filing endpoint, and pushed transactions feed the reports that filing uses (source: ) ## Compare - [Anrok vs TaxJar](https://www.anchorterminal.com/compare/anrok-vs-taxjar.md): C 61.6 vs C 57.6 - [Avalara AvaTax vs TaxJar](https://www.anchorterminal.com/compare/avalara-vs-taxjar.md): B 68.8 vs C 57.6 - [Quaderno vs TaxJar](https://www.anchorterminal.com/compare/quaderno-vs-taxjar.md): C 59.5 vs C 57.6 - [TaxJar vs Vertex O Series](https://www.anchorterminal.com/compare/taxjar-vs-vertex-tax.md): C 57.6 vs C 54.7 ## Verify this listing For the vendor. The badge or a plain link to this page verifies the listing, from a page on taxjar.com or one of its subdomains, or the README of github.com/taxjar/taxjar-node. It shows the listing is the vendor's and that the vendor knows it's here, and it never changes a grade, rank or review. The vendor sends the page's address to `POST https://www.anchorterminal.com/api/v1/verify` as `{"slug": "taxjar", "url": "…"}`, or calls the `verify_listing` tool at https://www.anchorterminal.com/mcp. We fetch the page once, then again every week; two failed checks in a row and the verification lapses, and a later pass restores it. What we check: https://www.anchorterminal.com/builders/index.md#verify HTML badge: ```html TaxJar on Anchor Terminal ``` Markdown badge, for a README: ```markdown [![TaxJar on Anchor Terminal](https://www.anchorterminal.com/badges/taxjar.svg)](https://www.anchorterminal.com/tools/taxjar) ``` Plain link: ```html TaxJar on Anchor Terminal ``` ## Share this listing For the vendor. Sharing assets for social media, two PNGs of 1200 × 630 that say TaxJar is listed on Anchor Terminal, with the vendor's logo and this page's address and no grade or score. - Dark: https://www.anchorterminal.com/assets/share/taxjar-dark.png - Light: https://www.anchorterminal.com/assets/share/taxjar-light.png