A GST credit note is the document a shop issues to reduce the value and tax of a bill that was already raised — most often when a customer returns goods. The registered supplier issues it (not the buyer), it must point back to the original invoice, and once you declare it in your GST return it lowers your output tax. This guide covers when to issue one, the GST credit note format a small shop should follow, the deadline to report it, and a worked example you can copy.
When to issue a credit note
Under Section 34 of the CGST Act, a registered supplier issues a credit note in three situations (see the rules on cbic.gov.in):
- The taxable value or tax charged on the invoice was more than it should have been (an overcharge, or a price cut agreed after billing).
- The goods are returned by the customer — the everyday reason in a retail shop.
- The goods or services were deficient — damaged, short-supplied, or not as promised.
A credit note always reduces what was billed. If instead you need to charge the customer more (you undercharged), that is a debit note, not a credit note.
What a GST credit note must contain
The format follows the CGST Rules. A compliant credit note carries these fields — confirm the current list on cbic.gov.in or with your CA:
| # | Field | Notes for a small shop |
|---|---|---|
| 1 | Your shop’s name, address & GSTIN | Same header as your invoice. |
| 2 | The words “Credit Note” | So the document type is clear. |
| 3 | A serial number | Consecutive, unique for the financial year, up to 16 characters. |
| 4 | Date of issue | DD/MM/YYYY. |
| 5 | Customer’s name, address & GSTIN | GSTIN only if the buyer is registered. |
| 6 | Original invoice number & date | The bill the goods came back against. |
| 7 | Value credited & tax | The taxable value returned, plus CGST + SGST or IGST. |
| 8 | Signature | Physical or digital signature of the supplier. |
Keeping your credit notes in their own neat, gap-free number series (the same discipline you use for invoices) makes reconciliation at return time far easier. Our guide to the GST invoice number format for the financial year explains the numbering rules the same way.
The tax split works exactly like an invoice
A credit note is not a special tax animal. It carries the same GST rate and the same split as the original sale:
- Same-state (intra-state) sale: the tax splits into CGST + SGST, each at half the rate — so the credit note reverses CGST + SGST too.
- Other-state (inter-state) sale: the original bill charged a single IGST, so the credit note reverses IGST.
If you are shaky on which one applies, our CGST, SGST and IGST guide walks through it with examples.
A worked example: a sales return in Surat
Meena runs a garment shop in Surat, Gujarat. Last week she sold 10 kurtis at ₹300 each to a walk-in customer, also in Gujarat — an intra-state sale at 5% GST (confirm the current rate for your goods on cbic.gov.in).
Her original invoice looked like this:
- Taxable value: 10 × ₹300 = ₹3,000
- CGST 2.5% = ₹75, SGST 2.5% = ₹75
- Invoice total = ₹3,150
Two days later the customer returns 2 kurtis. Meena raises a credit note against that invoice:
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MEENA GARMENTS GSTIN: 24ABCDE1234F1Z5
Ring Road, Surat, Gujarat - 395002
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Credit Note No: CN2026-27/0007 Date: 15/08/2026
Against invoice: INV2026-27/0148 (13/08/2026)
Customer: Walk-in Place of supply: Gujarat (24)
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Item Qty Rate Taxable GST
Kurti 2 300 600.00 5%
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Taxable value credited: 600.00
CGST 2.5%: 15.00
SGST 2.5%: 15.00
TOTAL CREDITED: ₹ 630.00
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Check the maths: taxable ₹600 × 2.5% = ₹15 CGST and ₹15 SGST, so ₹600 + ₹15 + ₹15 = ₹630. Meena hands back ₹630 (or adjusts it against the customer’s dues), and when she reports this credit note her output tax for the period drops by ₹30 (₹15 CGST + ₹15 SGST).
Deadline to report a credit note
You can raise a credit note whenever the return or correction happens. But to actually reduce your tax, you must declare it in a GST return by a cut-off: broadly, 30 November following the end of the financial year in which the original sale was made, or the date you file that year’s annual return, whichever is earlier. For a sale made in FY 2025-26, that points to 30 November 2026 — but dates and rules change, so confirm the current position on gst.gov.in or with your CA.
Miss the cut-off and you can still refund the customer, but you may not be able to reduce your GST for it. One more point for B2B sales: recent rules can require the buyer to reverse their input tax credit before you reduce your output tax — again, check with your CA if you sell to registered businesses.
Doing this without the arithmetic
Getting a credit note right by hand means copying the original bill’s rate, re-splitting CGST/SGST or IGST on the returned value, and keeping a clean, separate number series — on every return, at a busy counter.
Yojika does this for you. It’s offline-first GST billing software for Indian small shops: raise a credit note for a sales return in the same editor you use for bills, point it at the original invoice, and the tax split and rounding are handled automatically. Credit notes get their own gap-free number series, print to A4, A5, or a thermal receipt in any of the 22 official Indian languages, and your data stays on your own PC.
- See what’s included on the features page.
- Check simple, transparent pricing.
- Or download Yojika and try it free for 14 days.
New to GST bills in general? Start with our GST invoice format for small shops.
This article is general information, not tax advice. GST rules, rates and deadlines change — confirm the current position on gst.gov.in or cbic.gov.in, or with your CA.