Rental license gives you full capability of TallyPrime, including upgrades and TSS features, for the Rental License Duration
With Perpetual License, you get TallyPrime license for Lifetime. Perpetual license comes with free upgrades and TSS features for the first year
| Rental | Perpetual |
License Duration | Month/Quarter/Annual | Lifetime |
Upgrades and TSS Features | Free for the License Duration | Free for the First Year |

A Rental License is suitable for occasional or short term use. For those businesses who plan to use TallyPrime regularly, a perpetual license is ideal. It costs less, and once you buy one you acquire a lifelong license to use.