phase4 vs Vertex e-Invoicing
| phase4 | Vertex e-Invoicing | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | Linux, macOS, self-hosted, Web, Windows | api, Web |
| Free plan | No | — |
| Peppol access | Yes | Yes |
| Tax validation | No | Yes |
| API access | Yes | Yes |
| Structured formats | UBL | Peppol BIS, XML, JSON, SDI |
| Deployment | on-premise | cloud |
Both are listed in Best Electronic Invoicing Software. On Everything Xiaomi, Vertex e-Invoicing scores higher on our published basis.