The commerce ministry is working on the same, a source said.
Certain provisions in the special economic zone (SEZ) Act, 2005, are not consistent with the GST regime and need to be made compatible before the July 1 rollout date.
For instance, the duty drawback norms, under which an exporter is compensated for duties during the course of production of goods, are required to be in sync with the new indirect tax structure.
Additionally, the Section 26 of the SEZ Act dealing in exemptions, drawbacks and concessions to developers and entrepreneurs has to be amended.
SEZs are export hubs that contribute about 16 per cent to the country's total out-bound shipments.
GST unifies 16 different levies like excise, service tax, and VAT, among others.