As per section 51 of the CGST Act, 2017, the Government may mandate
(a) a department or establishment of the Central Government or State Government; or
(b) local authority; or
(c) Governmental agencies; or
(d) such persons or category of persons as may be notified by the Government
on the recommendations of the Council,
to deduct tax at the rate of one per cent on account of CGST and one percent on account of SGST from the payment made or credited to the supplier where the total value of the supply under a contract exceeds two lakh and fifty thousand rupees (excluding tax payable under the GST Acts). The deductor shall remit the deducted amount to the Government and is also required to furnish a certificate to the deductee by mentioning the details of the amount deducted and payment of such deducted amount.
Illustration: ABC Ltd supplies the service valued at Rs.3,00,000/- excluding tax to Government department. The department while making the payment of Rs. 3,00,000/-should deduct Rs. 3000/- on account of CGST and Rs. 3000/ on account of SGST and make a net payment of Rs. 2,94, 000/- to ABC Ltd. Thereafter, the department shall pay the amount of Rs. 3,000/- to the Central Government and Rs. 3,000/- to the State Government and furnish a certificate to the deductee, containing the details of such deduction including the details
of such deductee.