IRIS Business Tax vs Sphere
| IRIS Business Tax | Sphere | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | $100/mo |
| Open source | No | No |
| Platforms | self-hosted, Windows | api |
| Free plan | — | No |
| Paid from | — | $100/mo |
| Supported tax types | — | sales tax, VAT, GST |
| Return filing | — | Yes |
| Filing support level | — | automated |
| Sales tax calculation | — | Yes |
| Tax registration | — | Yes |
| API access | — | Yes |
Both are listed in Best Tax Compliance Software. On Everything Xiaomi, Sphere scores higher on our published basis.