## Section 25(3) — Voluntary Registration
A person not liable for registration u/s 22 or 24 may opt for voluntary registration. Once registered, all provisions of the Act apply — including payment of tax — irrespective of turnover being below the threshold.
## Section 25(4) & (5) — Distinct Persons / Establishments of Distinct Persons
- Sec 25(4): A person with multiple registrations (in one or more States/UTs) is treated as distinct persons for each registration.
- Sec 25(5): Where a person who has obtained / is required to obtain registration in one State/UT also has an establishment in another State/UT, the establishments are treated as establishments of distinct persons.
Consequence: Supplies between such establishments are taxable supplies even within the same legal entity.
## Section 25(6) & (7) — PAN Requirement
- PAN issued under the Income-tax Act, 1961 is mandatory for obtaining GST registration.
- Exception: A Non-Resident Taxable Person (NRTP) may be granted registration on the basis of other prescribed documents (e.g., passport).