Is this possible for a registered GTA to avail both option of 5% and 12% at the same time? If yes then how to take ITC? If no then what are the consequence if a GTA is following both the method?

Reply—  There is an Option available with GTA to pay GST on forward charge basis. As per this Option GTA can pay GST @ 12% on all supplies (service supplied to specified and non specifide both)  and avail full ITC admissible under law. IF GTA charge GST @ 12% in his tax invoice the recipient is not liable to pay GST under reverse charge. The Option once exercised can not be withdrawn during the remaining part of financial year.