# TaxCloud vs Vertex O Series (slim)

> TaxCloud scores 57.4 (C) on agent readiness against Vertex O Series's 54.7 (C), and leads in 4 of 7 scored categories. Vertex O Series leads on security & auth, maintenance & community and transparency & trust. Both do tax calculate. Category scores, facts, verdicts and agent…

- Full: https://www.anchorterminal.com/compare/taxcloud-vs-vertex-tax.md (~2,250 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/taxcloud-vs-vertex-tax.json · canonical https://www.anchorterminal.com/compare/taxcloud-vs-vertex-tax
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

TaxCloud scores 57.4 (C) on agent readiness against Vertex O Series's 54.7 (C), and leads in 4 of 7 scored categories. Vertex O Series leads on security & auth, maintenance & community and transparency & trust. Both do tax calculate.

- TaxCloud: C 57.4, rank #475 of 722 · https://www.anchorterminal.com/tools/taxcloud.min.md
- Vertex O Series: C 54.7, rank #526 of 722 · https://www.anchorterminal.com/tools/vertex-tax.min.md
- TaxCloud, good for An agent working for a US seller that needs tax on a cart at checkout, a record of orders and refunds for filing, and exemption certificates by customer. Ahead on Agent ergonomics, 64 against 51; Payments & pricing, 34 against 0. Also Free to start without a card.
- Vertex O Series, good for An agent working inside a company that already has an O Series licence, for quotes, invoice tax, tax area lookups and tax configuration across sales tax, use tax and VAT. Ahead on Security & auth, 57 against 45; Maintenance & community, 62 against 57; Transparency & trust, 68 against 51.

| Category | TaxCloud | Vertex O Series |
| --- | --- | --- |
| Reliability (16%) | 66 | 65 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 75 | 74 |
| Agent ergonomics (13%) | 64 | 51 |
| Security & auth (14%) | 45 | 57 |
| Payments & pricing (10%) | 34 | 0 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 57 | 62 |
| Transparency & trust (7%) | 51 | 68 |

| Fact (where they differ) | TaxCloud | Vertex O Series |
| --- | --- | --- |
| Vendor | The Federal Tax Authority, LLC (TaxCloud) | Vertex, Inc. |
| Hosted endpoint | `https://api.v3.taxcloud.com` | `https://calcconnect.vertexsmb.com/vertex-ws/v2` |
| Auth | API key | OAuth |
| Licence | Proprietary service under TaxCloud's terms of service. The agent skills repository on GitHub is Apache-2.0 | Proprietary service under a customer agreement with Vertex, Inc. that isn't published |
| llms.txt | yes | no |
| Last release | 2026-09-24 | 2026-09-25 |
| Terms last updated | 2025-03-01 | no date given |
| Privacy policy last updated | 2025-02-01 | no date given |
| Customer content may train models | yes | not found in the text |
| Terms restrict automated access | yes | not found in the text |
| Terms restrict benchmarking | yes | not found in the text |
| Terms or service can change without notice | yes | not found in the text |
| Popularity | 0 stars | none |