tds under GST

Yes; at present that is the rule, which is yet to be implemented

I dont think so. If you are making a payment for invoice received of say Rs 3 Lakh, you have to deduct 1% (0.5 + 0.5) and then make the payment..

Under the GST regime, section 51 of the CGST Act, 2017 prescribes the authority and procedure for ‘Tax Deduction at Source’. The Government may order the following persons (the deductor) to deduct tax at source:

(a) A department or an 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.

More details refer: TDS-mechanism21062017