# Quaderno vs TaxJar (slim)

> Quaderno scores 59.5 (C) on agent readiness against TaxJar's 57.6 (C), and leads in 3 of 7 scored categories. TaxJar leads on agent ergonomics and maintenance & community. Both do tax calculate. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/quaderno-vs-taxjar.md (~1,950 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/quaderno-vs-taxjar.json · canonical https://www.anchorterminal.com/compare/quaderno-vs-taxjar
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

Quaderno scores 59.5 (C) on agent readiness against TaxJar's 57.6 (C), and leads in 3 of 7 scored categories. TaxJar leads on agent ergonomics and maintenance & community. Both do tax calculate.

- Quaderno: C 59.5, rank #377 of 629 · https://www.anchorterminal.com/tools/quaderno.min.md
- TaxJar: C 57.6, rank #417 of 629 · https://www.anchorterminal.com/tools/taxjar.min.md
- Quaderno, good for An agent working for a SaaS, digital-goods or e-commerce seller that needs a tax rate at checkout, a record of each sale with location evidence, and compliant invoices, including Spanish Verifactu and TicketBAI. Ahead on Reliability, 91 against 84; Schema & documentation, 77 against 48; Transparency & trust, 76 against 71.
- TaxJar, good for An agent working for a US seller that needs sales tax on an order at checkout and a record of orders and refunds for state reporting, with exempt customers handled by ID. Ahead on Agent ergonomics, 61 against 56; Maintenance & community, 64 against 28. Also Free to start without a card.

| Category | Quaderno | TaxJar |
| --- | --- | --- |
| Reliability (16%) | 91 | 84 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 77 | 48 |
| Agent ergonomics (13%) | 56 | 61 |
| Security & auth (14%) | 39 | 43 |
| Payments & pricing (10%) | 30 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 28 | 64 |
| Transparency & trust (7%) | 76 | 71 |

| Fact (where they differ) | Quaderno | TaxJar |
| --- | --- | --- |
| Vendor | Recrea Systems, SL | TaxJar (Stripe) |
| Hosted endpoint | `https://quadernoapp.com/api` | `https://api.taxjar.com/v2` |
| Auth | OAuth or key | API key |
| Licence | Proprietary service under Quaderno's terms of service. The Ruby library on GitHub is MIT | Proprietary service under TaxJar's terms of service and API licence agreement. The official API clients on GitHub are MIT |
| llms.txt | yes | no |
| Last release | 2026-07-04 | 2026-09-02 |
| Terms last updated | 2026-09-15 | 2026-05-14 |
| Privacy policy last updated | 2024-05-16 | 2022-01-07 |
| Terms restrict automated access | yes | not found in the text |
| Terms or service can change without notice | yes | not found in the text |
| Popularity | 15 stars | 57 stars, 95k npm/wk, 50k PyPI/wk |