# Avalara AvaTax vs TaxJar (slim)

> Avalara AvaTax scores 68.8 (B) on agent readiness against TaxJar's 57.6 (C), and leads in 5 of 7 scored categories. TaxJar leads on reliability. Both do tax calculate. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/avalara-vs-taxjar.md (~2,050 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/avalara-vs-taxjar.json · canonical https://www.anchorterminal.com/compare/avalara-vs-taxjar
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

Avalara AvaTax scores 68.8 (B) on agent readiness against TaxJar's 57.6 (C), and leads in 5 of 7 scored categories. TaxJar leads on reliability. Both do tax calculate.

- Avalara AvaTax: B 68.8, rank #162 of 629 · https://www.anchorterminal.com/tools/avalara.min.md
- TaxJar: C 57.6, rank #417 of 629 · https://www.anchorterminal.com/tools/taxjar.min.md
- Avalara AvaTax, good for An agent that must calculate and record US sales tax at address level, with VAT and GST in other countries, and hand the records to filing. Ahead on Schema & documentation, 85 against 48; Agent ergonomics, 84 against 61; Security & auth, 65 against 43; Maintenance & community, 79 against 64; Transparency & trust, 79 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 Reliability, 84 against 62. Also Free to start without a card.

| Category | Avalara AvaTax | TaxJar |
| --- | --- | --- |
| Reliability (16%) | 62 | 84 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 85 | 48 |
| Agent ergonomics (13%) | 84 | 61 |
| Security & auth (14%) | 65 | 43 |
| Payments & pricing (10%) | 30 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 79 | 64 |
| Transparency & trust (7%) | 79 | 71 |

| Fact (where they differ) | Avalara AvaTax | TaxJar |
| --- | --- | --- |
| Vendor | Avalara, Inc. | TaxJar (Stripe) |
| Hosted endpoint | `https://rest.avatax.com/api/v2` | `https://api.taxjar.com/v2` |
| Transports | HTTP, Streamable HTTP | HTTP |
| Auth | OAuth or key | API key |
| Licence | Proprietary service under the Avalara Service Terms. The SDKs on GitHub are Apache-2.0. The MCP repository holds a README only, with no licence file | Proprietary service under TaxJar's terms of service and API licence agreement. The official API clients on GitHub are MIT |
| Tools exposed | 10 | none |
| llms.txt | yes | no |
| MCP registry | `com.avalara/avatax` | not listed |
| Last release | 2026-09-16 | 2026-09-02 |
| Terms last updated | 2023-05-01 | 2026-05-14 |
| Privacy policy last updated | 2022-08-08 | 2022-01-07 |
| Popularity | 5 stars, 331k npm/wk, 38k PyPI/wk | 57 stars, 95k npm/wk, 50k PyPI/wk |