Credit note under GST explained

When a credit note can be issued

• The taxable value or tax charged in the invoice was higher than it should have been.
• The buyer returned goods.
• Goods or services supplied were found deficient.
• A discount agreed before or at the time of supply, and linked to specific invoices, is given later.

Time limit and reporting

A credit note for a financial year must be declared no later than 30 November following the end of that year, or the date of filing the annual return, whichever is earlier. After that, output tax cannot be reduced. Report it in GSTR-1 for the period in which it is issued, linked to the original invoice details. A single credit note can cover several invoices. The supplier's tax reduction is allowed only if the incidence of tax has not been passed on to someone else.

Common mistakes

Many businesses issue credit notes for year-end rebates that were never agreed in advance. These are commercial or financial credit notes: they can be issued, but they do not reduce GST. Another error is forgetting that the buyer must accept or reflect the credit note on its side; through the Invoice Management System the buyer acts on it, and the credit claimed falls accordingly. Mismatches between the two sides often trigger DRC-01C or ASMT-10 queries.

Get it handled for you

Want your returns filed and reconciled every month without mismatch notices? Our team handles it end to end. Call or WhatsApp +91 63677 44602, or use the form below.

This guide explains the law in general terms as of October 2026. Time limits and requirements can depend on the facts of your case and on the notice you received.