IRIS Business Tax vs Tax Series
| IRIS Business Tax | Tax Series | |
|---|---|---|
| Free trial | Yes | |
| Platforms | self-hosted, Windows | api, Web |
| Business entity support | U.S. corporate taxpayers and multinational corporations | |
| Federal e-file | Yes | |
| State e-file | Yes | |
| Bookkeeping imports | Yes | |
| Prior-year import | Yes |
Listed together in Best Tax Compliance Software