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