Electricity, gas, water and similar utility distribution services under these codes are treated as utility supply and distribution services under GST. In many cases, supply or transmission by recognised utilities enjoys specific exemptions, while commercial or non utility distribution may be taxable.
After the September 2025 rationalisation, wherever these utility services are taxable, the service component is generally placed in the 18 % slab with input tax credit, because network operation and distribution are input intensive. Where services continue to enjoy a notified exemption or zero effective rate, that treatment remains available as per the latest GST notifications.
The table below gives the broad GST treatment for SAC code 996921, showing the standard 18 % slab where taxable and any exempt utility cases as per notification.