# TaxJar vs Zamp (slim)

> TaxJar scores 57.6 (C) on agent readiness against Zamp's 49.5 (D), and leads in 6 of 7 scored categories. Both do tax calculate. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/taxjar-vs-zamp.md (~2,150 tokens) · this version ~580 tokens · JSON https://www.anchorterminal.com/compare/taxjar-vs-zamp.json · canonical https://www.anchorterminal.com/compare/taxjar-vs-zamp
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

TaxJar scores 57.6 (C) on agent readiness against Zamp's 49.5 (D), and leads in 6 of 7 scored categories. Both do tax calculate.

- TaxJar: C 57.6, rank #470 of 722 · https://www.anchorterminal.com/tools/taxjar.min.md
- Zamp: D 49.5, rank #609 of 722 · https://www.anchorterminal.com/tools/zamp.min.md
- 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 Reliability, 84 against 72; Payments & pricing, 30 against 20; Maintenance & community, 64 against 42; Transparency & trust, 71 against 50.
- Zamp, good for An agent working for a US or Canadian seller that wants Zamp's team to register, file and remit, and needs calculation and transaction sync through a small API.

| Category | TaxJar | Zamp |
| --- | --- | --- |
| Reliability (16%) | 84 | 72 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 48 | 44 |
| Agent ergonomics (13%) | 61 | 64 |
| Security & auth (14%) | 43 | 40 |
| Payments & pricing (10%) | 30 | 20 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 64 | 42 |
| Transparency & trust (7%) | 71 | 50 |

| Fact (where they differ) | TaxJar | Zamp |
| --- | --- | --- |
| Vendor | TaxJar (Stripe) | Zamp Inc. |
| Hosted endpoint | `https://api.taxjar.com/v2` | `https://api.zamp.com` |
| Licence | Proprietary service under TaxJar's terms of service and API licence agreement. The official API clients on GitHub are MIT | Proprietary service under Zamp's Standard Terms and Conditions, which form part of a signed Order Form. The sandbox has its own Developer trial terms |
| llms.txt | no | yes |
| Last release | 2026-09-02 | 2026-08-31 |
| Terms last updated | 2026-05-14 | no date given |
| Privacy policy last updated | 2022-01-07 | 2025-02-11 |
| Terms restrict automated access | not found in the text | yes |
| Popularity | 57 stars, 95k npm/wk, 50k PyPI/wk | none |