A debit note should be issued by a supplier in the following circumstances:
(a) The taxable value shown in the invoice is lesser than the taxable value of the supply; or (b) The tax charged in the invoice is less than the tax payable on the supply.
The following aspects need to be noted:
• Where there is no change in the taxable value/ tax amount, a debit note need not be issued;
• A debit note has to be issued by the supplier. A debit note issued by a recipient, say for accounting purposes, is not a relevant document for GST purposes;
• The details of the debit note have to be declared by the supplier in the return of the month of the issue of debit note;
• Debit note includes a supplementary invoice