Major relief announced for REVERSE CHARGE MECHANISM - 

Government has decided that a per day exemption of Rs. 5000/- will be given in case of inward supply from Unregistered suppliers.
For supplies above this a single monthly bill can be raised.

This is a big relief to registered tax payers as this exemption will reduce a lot of compliance burden.

Source of Information - Answer to tweets released on CBEC website

GST tweet FAQ refer to Query No. - 54 & 59

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