Sir,
In this regards, my point of view is that, In terms of Section 2(84) of CGST Act, 2017, even Central Government or State Government is a “Person” and GST is to be borne by the receiver of goods or services, therefore, State Government being recipient of service is liable for GST. The exemption Notification No.12/2017-CT (Rate) dated 28.06.2017, as amended from time to time, nowhere states "service provided to Government.....". Hence, exemption is not available.
Moreover, central and state Government dept. are Tax deductor at source (TDS) under Section 51 of CGST Act,2017, however, in terms of Notification No. 33/2017-CT dated 15.09.2017, the said Section 51 came into force with effect from 18th September-17.However, deduction of tax, shall be effected from date to be notified. This does not stipulates, from registration, But….
In view of above, it can be said that Government is liable to GST and should pay GST. Alternately, you can raise the Invoice including GST , supply to un-registered person and pay tax. Any other view is appreciated.
Thanks