This discussion clarifies how to calculate the original invoice value when you have a figure that already includes GST at 12% and has had TDS at 7.5% deducted. The calculation involves working backwards from the net amount paid to determine the gross amount before TDS, and then calculating the GST component.
30 March 2021
Assumption: Tax deducted at source on total invoice value: 1) Paid (after TDS): ₹101735, hence gross amount would be ₹109984, after TDS ₹8249 2) GST ₹11784 However, if tax is deducted at source on basic value, then this computation does not hold good.
29 October 2026
Where GST is shown separately, income-tax TDS is deducted on the value excluding GST (CBDT Circular 23/2017): base B × 1.12 − 7.5% of B = ₹1,01,735.6, so B ≈ ₹97,355, GST ≈ ₹11,683 and invoice ≈ ₹1,09,037.