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.