Sphere vs Zamp
| Sphere | Zamp | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | $100/mo | Free |
| Open source | No | No |
| Platforms | api | api |
| Free plan | No | No |
| Paid from | $100/mo | — |
| Supported tax types | sales tax, VAT, GST | Sales tax; GST; HST; PST; QST |
| Return filing | Yes | Yes |
| Filing support level | automated | automated |
| Sales tax calculation | Yes | Yes |
| Tax registration | Yes | Yes |
| API access | Yes | Yes |
| Jurisdictions covered | — | 13,000 jurisdictions |
Both are listed in Best Tax Compliance Software, Best Tax Engine Software, Best Sales Tax Software. On Inferse, Zamp scores higher on our published basis.