Credit Notes and Debit Notes Under GST for Shops: When to Issue One, the Time Limit, and How Billing Software Links It to the Original Invoice
A returned shirt, a wrong rate, a short-billed quantity: once a tax invoice is out, GST says you fix it with a credit note or a debit note, not by editing the bill. Here is when each applies, the 30 November deadline, and what your billing software should handle for you.