Credit Notes — What They Are and How to Issue One

What is a Credit Note?

A Credit Note is a document you issue to a customer to reduce the amount they owe you. Under GST rules, you cannot simply edit or delete a finalized invoice. Instead, you issue a credit note against it.

Common Reasons to Issue a Credit Note

• Customer returned goods
• You over-billed the customer (wrong rate or quantity)
• Post-sale discount agreed after invoice was raised
• Cancellation of services already invoiced

Credit Note vs Cancelling an Invoice

How to Create a Credit Note in BillYantra

1. Go to Sales → Credit Notes in the sidebar.
2. Click + New Credit Note.
3. Select the original invoice you are crediting against — BillYantra auto-fills customer details.
4. Add the line items being returned or the amount being reduced.
5. GST is automatically calculated and reversed.
6. Click Finalize to lock the credit note.

What Happens to GST?

The credit note reduces your output GST liability. For example:

• Original invoice: ₹10,000 + GST 18% = ₹11,800
• Credit note for ₹5,000 return: reduces GST by ₹900
• Net GST payable: ₹1,800 − ₹900 = ₹900

This is automatically reflected in your GSTR-1 (CDNR section) and GSTR-3B.

Time Limit for Issuing Credit Notes

Under GST rules, a credit note must be issued before the earlier of:

• 30th September of the following financial year, OR
• Filing of the annual return

Important: Always link a credit note to the original invoice in BillYantra for correct GSTR reconciliation.