Hii
First of all i want to clear GST Basic Concept
on all intrastate supplies ( with in state) services or goods or both combination of CGST & SGST/UTGST applicable
on all interstate Supplies(out of state) services or goods or both IGST applicable (which is combined rate of SGST/UTGST and CGST)
hope now your doubt about IGST and SGST/CGST clear
now for TDS there is no change same as earlier TDS deduct on service portion there is no impact of Intrastate or interstate