There is no such monetary threshold notified under IGST Act, 2017 meaning thereby in case of Inter-state supplies, even supplies of less than Rs. 5000 will attract tax on reverse charge if supplier is un-registered and recipient is registered.
There are several procedural requirements as well in case of any reverse charge supply received by recipient.
Issuance of Invoice by recipient for all reverse charge supplies.
Issuance of Payment Vouchers by recipient in case of payment in respect of reverse charge supplies.
Determination of time of supply of goods in such cases.
Upload of invoice particulars for reverse charge liability.
Payment of GST by E-cash ledger as credit is not permitted to be utilized for reverse charge liability thus leading to Working Capital Blockage.
Claim of Input Tax Credit of taxes paid under reverse charge subject to eligibility as per the act.