Calcutta High Court
For assessee
Goutam Engineering Concern v. West Bengal State Electricity Distribution Company Ltd
Where electrical line repair and maintenance services had been completed in 2015 before introduction of GST, subsequent approval and billing in 2019 could not alter date of supply or bring completed services within GST regime, consequently payment withheld for want of GST registration was directed to be released with interest after deducting tax, if any, applicable under pre-GST regime