GST Credit Note Format: Fields, Excel Layout, and Deadlines

Key Takeaways

A GST credit note has no prescribed template, but it must contain all particulars mandated by Rule 53 and Section 34, including supplier and recipient details, a unique serial number, the issue date, original invoice reference, taxable value, tax rate and amount, and signature or digital signature.
If HSN or SAC was mandatory on the original invoice, it is equally mandatory on the credit note, and e-invoicing applies to credit notes when aggregate turnover exceeds ₹5 crore in any preceding year.
The outer deadline to report a credit note in GSTR-1 is 30 November of the following financial year, or the date of filing the annual return, whichever is earlier; missing it permanently disallows output tax reduction.
Post-supply discounts reduce output tax only when pre-agreed, linked to the invoice, and the recipient reverses proportionate ITC; otherwise, the recipient faces an interest demand.
In Tally, always post credit notes “Against Reference” to the exact sales invoice to preserve ageing, GSTR-1 reporting, and reconciliation, or consider automation via AI Accountant MIS Reporting.

Credit Note Format In GST: The Short Answer

A GST credit note has no single prescribed format from CBIC, it must simply contain all mandatory particulars under Rule 53 of the CGST Rules, 2017.

Supplier GSTIN, Name, Address — Rule/Section Reference: Section 34(1) / Rule 53 — Notes: As per GST registration
Unique Consecutive Serial Number — Rule/Section Reference: Rule 53(1)(b) — Notes: Per financial year
Date Of Issue — Rule/Section Reference: Rule 53(1)(c) — Notes: DD-MM-YYYY
Recipient GSTIN / UIN (if registered) — Rule/Section Reference: Section 34(1)(a) — Notes: Else name, address, state code
Original Invoice Number And Date — Rule/Section Reference: Section 34(1)(a) — Notes: Exact match required
Taxable Value, Tax Rate, Tax Amount — Rule/Section Reference: Section 34(1)(a) — Notes: CGST + SGST or IGST
HSN / SAC Code — Rule/Section Reference: Notification 01/2021 — Notes: Based on turnover threshold
Signature Or Digital Signature — Rule/Section Reference: Rule 53(1)(j) — Notes: Physical or digital
IRN From IRP — Rule/Section Reference: Notification 10/2023 — Notes: If e-invoicing threshold crossed

The most common error is quoting a wrong original invoice number. If the reference does not match what is in GSTR-1 exactly, the credit note fails validation and the recipient’s GSTR-2B will not reflect the reduced ITC.

A single wrong invoice reference on a credit note can block your customer’s Input Tax Credit, and yours. Under Section 34(2) of the CGST Act, 2017, the deadline to report a credit note in GSTR-1 is 30 November of the following financial year or the date of filing the annual return, whichever is earlier. Miss that window and neither party can correct the tax liability.

A GST credit note is a document issued by a supplier to reduce the taxable value or tax charged on an original invoice. Section 34(1) of the CGST Act, 2017 permits issuance for four reasons: excess value charged, excess tax charged, goods returned, or services found deficient. Rule 53 of the CGST Rules, 2017 prescribes exactly which fields the document must carry. There is no single prescribed CBIC template, only a mandatory list of particulars.

What Fields Must A GST Credit Note Contain?

Every field on a GST credit note is prescribed by Rule 53 of the CGST Rules, 2017 and Section 34(1) of the CGST Act, 2017. CBIC has not issued a standard printed template, your format is valid as long as every mandatory particular is present and accurate.

Supplier And Recipient Details

The credit note must carry the supplier’s legal name, registered address, and 15-digit GSTIN. For a registered recipient, the document needs their GSTIN or UIN. For an unregistered recipient, Rule 53(1)(d) of the CGST Rules requires the recipient’s name, address, delivery address, state name, and state code. Never leave the recipient block blank for unregistered buyers, it triggers a GSTR-1 upload error.

Document Number, Date, And Original Invoice Reference

The credit note number must be unique and consecutive within the financial year per Rule 53(1)(b). The original invoice number and date are mandatory under Section 34(1)(a). This is the field that causes the most rejections: a single character difference between what you write and what is in GSTR-1 Table 9B will cause a mismatch. Pull the number directly from the invoice register, not from memory.

Taxable Value, Tax Rate, And HSN/SAC

The document must state taxable value, applicable rate, and the actual CGST plus SGST or IGST amount being credited. If the original invoice carried HSN or SAC codes, which is mandatory for any taxpayer above ₹5 crore aggregate turnover under Notification No. 01/2021 – Central Tax, those codes must appear on the credit note as well, at the same digit level.

Tip: Keep rate slabs separate. If the original invoice contained multiple GST rates, state each slab separately on the credit note to avoid GSTR-1 validation errors.

Signature And E-Invoice Requirements

Rule 53(1)(j) requires a signature or digital signature of the supplier or their authorised representative. Electronic signatures are accepted. For taxpayers whose aggregate turnover in any preceding year from FY 2017–18 exceeded ₹5 crore, every credit note must also be reported to the IRP to generate an IRN under Notification No. 10/2023 – Central Tax. An e-invoiced credit note cannot be cancelled or amended after 24 hours of IRN generation, except through the GST portal.

Frequently Asked Questions About GST Credit Note Fields

Is Place Of Supply mandatory on a credit note?
Place of supply is not listed as a standalone field in Rule 53, but it is embedded through the state code requirement, both for the supplier’s address and, for unregistered recipients, for the delivery address and state. For interstate supplies, the correct state code determines whether IGST or CGST+SGST applies. Omitting the state code for an unregistered recipient will cause GSTR-1 Table 9B rejection.

Do I need to repeat the HSN code on the credit note if the original invoice had it?
Yes. Notification No. 01/2021 – Central Tax requires the same HSN/SAC level as was mandatory on the original invoice. For turnover above ₹5 crore, that means a 6-digit code on the credit note for both B2B and B2C. For turnover up to ₹5 crore, 4-digit HSN is mandatory for B2B credit notes; it is optional for B2C.

Can I issue one credit note against multiple invoices?
The CGST Act does not explicitly prohibit a single credit note referencing multiple invoices. However, GSTN’s GSTR-1 Table 9B requires you to link each credit note entry to one original document. In practice, issue one credit note per original invoice to avoid upload failures and reconciliation issues.

Credit Note Format In Excel — A Ready Column Layout You Can Paste

No CBIC or ICAI regulation prescribes a specific Excel template for credit notes. The column set below maps exactly to the mandatory GST particulars and is structured for clean import into Tally or direct use in GSTR-1 Table 9B.

Core Column Structure

Supplier GSTIN — Data Type: Text — Validation Note: 15-character; validate length
Supplier Legal Name — Data Type: Text — Validation Note: As per GST registration
Supplier Address — Data Type: Text — Validation Note: —
Credit Note Number — Data Type: Text — Validation Note: Unique per FY; auto-sequence
Credit Note Date — Data Type: Date — Validation Note: DD-MM-YYYY
Recipient GSTIN / UIN — Data Type: Text — Validation Note: “UNREGISTERED” if not registered
Recipient Legal Name — Data Type: Text — Validation Note: —
Recipient Address — Data Type: Text — Validation Note: Mandatory for unregistered
Place Of Supply (State Code) — Data Type: Text — Validation Note: e.g., Maharashtra – 27
Original Invoice Number — Data Type: Text — Validation Note: Exact match to GSTR-1
Original Invoice Date — Data Type: Date — Validation Note: DD-MM-YYYY
Item Description — Data Type: Text — Validation Note: —
HSN / SAC Code — Data Type: Text — Validation Note: 4 or 6 digit per threshold
Quantity — Data Type: Number — Validation Note: —
Unit Of Measurement — Data Type: Text — Validation Note: PCS, KGS, etc.
Rate Per Unit — Data Type: Number — Validation Note: Two decimal places
Taxable Value Per Item — Data Type: Number — Validation Note: Two decimal places
Discount — Data Type: Number — Validation Note: If applicable
Net Taxable Value — Data Type: Number — Validation Note: Taxable Value minus Discount
CGST Rate (%) — Data Type: Number — Validation Note: —
CGST Amount — Data Type: Number — Validation Note: Formula-calculated
SGST Rate (%) — Data Type: Number — Validation Note: —
SGST Amount — Data Type: Number — Validation Note: Formula-calculated
IGST Rate (%) — Data Type: Number — Validation Note: —
IGST Amount — Data Type: Number — Validation Note: Formula-calculated
Cess Rate (%) — Data Type: Number — Validation Note: If applicable
Cess Amount — Data Type: Number — Validation Note: If applicable
Total Credit Note Value — Data Type: Number — Validation Note: Sum of all tax and taxable amounts
Reason For Credit Note — Data Type: Text — Validation Note: Sales Return / Price Reduction / Deficiency
IRN — Data Type: Text — Validation Note: Mandatory if e-invoicing applies
Acknowledgement Number (IRP) — Data Type: Text — Validation Note: Mandatory if e-invoicing applies
Acknowledgement Date (IRP) — Data Type: Date — Validation Note: Mandatory if e-invoicing applies

Five Setup Tips For Data Integrity

GSTIN length validation. Use Excel’s LEN formula inside a Data Validation rule to reject any entry where length is not 15.
State code dropdown. Create a named range of state and UT codes and apply it to the “Place Of Supply” column to prevent upload errors.
Auto-calculate tax amounts. Lock formulas for tax computations; manual overrides cause mismatches with GSTR-1.
Original invoice lookup. Use VLOOKUP or XLOOKUP on the Original Invoice Number to auto-fill the Original Invoice Date and eliminate transcription errors.
Reason code standardisation. Restrict “Reason For Credit Note” to a fixed dropdown for consistent audit trails and easy mapping.

Frequently Asked Questions About The Excel Credit Note Format

What should the credit note number format look like in Excel?
CBIC does not prescribe a numbering format, only that the number be unique and consecutive within a financial year per Rule 53(1)(b) of the CGST Rules, 2017. A practical format is CN/FY26/001, CN/FY26/002, and so on.

How should negative values be handled in the GSTR-1 upload?
In GSTR-1 Table 9B, a credit note is reported as its own document with positive values for the reduced amount. Do not use negative values in Table 9B.

When To Issue A Credit Note — And By When To Report It In GSTR-1

A supplier may issue a credit note under Section 34(1) of the CGST Act, 2017 in four situations: taxable value overcharged, tax overcharged, goods returned, or services found deficient. The reporting deadline is the binding constraint, missing it removes the right to reduce output tax permanently.

The Four Triggers And How To Document Each

Excess value or tax charged. Issue the credit note as soon as the error is identified and attach the recipient’s acknowledgement.
Goods returned. Raise the credit note when goods are received back and a GRN is recorded; link the credit note to the original invoice and GRN in the narration.
Services found deficient. Issue upon written confirmation of deficiency; record “Deficiency In Service” as reason.
Post-supply discount for price revision. Ensure prior agreement, invoice linkage, and recipient’s ITC reversal as per CBIC Circular No. 92/11/2019-GST.

Reporting Deadline — With A Worked Example

Under Section 34(2) of the CGST Act, 2017, as amended by the Finance Act, 2022 via Notification No. 18/2022 – Central Tax, the outer reporting limit is the earlier of:

30 November following the end of the financial year in which the original supply was made, or
The date of filing the annual return for that year.

Example: You sold goods in June 2025. Buyer returns goods in August 2026. You must issue and report the credit note by 30 November 2026, or by the date you file GSTR-9 for FY 2025–26, whichever comes first.

Which GSTR-1 Table Captures The Credit Note?

Registered recipients (B2B): Table 9B – Credit/Debit Notes (Registered)
Unregistered recipients (B2C): Table 9B – Credit/Debit Notes (Unregistered)
Exports with IGST payment: Table 9B – Credit/Debit Notes (Exports with payment)
Exports without IGST payment: Table 9B – Credit/Debit Notes (Exports without payment)

Frequently Asked Questions About GSTR-1 Reporting Timelines

Can I issue a credit note after the financial year ends?
Yes, but within the statutory limit. For a supply made in FY 2025–26, you can report a related credit note until 30 November 2026 or the date of filing GSTR-9 for FY 2025–26, whichever is earlier.

What happens if the e-invoice IRN is not generated before the 24-hour window closes?
Post 24 hours, IRP cancellation/amendment is blocked. Corrections must be made via the GST portal by amending GSTR-1. If IRN was required and not generated, the credit note is invalid for GST purposes.

Posting Credit Notes In Tally With Bill Reference — And Avoiding "On Account"

If a credit note is posted “On Account” instead of “Against Reference,” it will not reduce the specific outstanding invoice, ageing will be wrong, and reconciliation breaks. Follow the steps below.

Step 1 — Enable Bill-Wise Details At Company And Ledger Level

In TallyPrime, enable “Maintain Bill-wise Details” at both company and party ledger level so Tally prompts for bill references during voucher entry.

Step 2 — Configure The Credit Note Voucher Type

Alter the Credit Note voucher type to Automatic numbering to preserve sequential numbering per Rule 53(1)(b). Assign the correct GSTIN if you manage multiple registrations.

Step 3 — Record The Credit Note Against The Original Invoice

Select the party, then in Bill-wise Details choose Against Reference and pick the original invoice.
Enter the credit amount, add the appropriate GST ledgers, and save.
Use a clear narration referencing the original invoice number and date.

Frequently Asked Questions About Tally Credit Note Posting

Why does my credit note show as “On Account” even after choosing “Against Reference”?
Likely the original invoice is fully settled. Reopen the bill by reversing the payment, post the credit note against reference, then re-enter the payment.

How do I handle a partial credit note?
Select the original invoice under “Against Reference,” enter the partial credit amount. Tally leaves the balance outstanding and updates ageing accordingly.

Five Mistakes That Blow Up ITC — And The Checklist To Avoid Them

Mistake 1 — Reporting The Credit Note After The Statutory Deadline

If you declare a credit note after 30 November of the following FY or after filing GSTR-9, Section 34(2) bars output tax reduction. The recipient’s GSTR-2B will not show the credit, leading to audit exposure.

Mistake 2 — Wrong Original Invoice Details On The Credit Note

GSTR-1 Table 9B validates against your earlier returns. A wrong invoice number or date causes rejection. Pull details programmatically from your invoice register.

Mistake 3 — Supplier Does Not Upload; Recipient Holds Excess ITC

Under Section 16(2)(aa), ITC is available only to the extent reflected in GSTR-2B. Excess ITC attracts 18% interest under Section 50(3). Reconcile monthly and escalate missing uploads.

Mistake 4 — Recipient Does Not Reverse ITC For Post-Supply Discounts

Per Section 15(3)(b)(ii), supplier’s tax reduction requires the recipient to reverse proportionate ITC. Delays invite interest from the month of original availment.

Mistake 5 — Skipping E-Invoice For Applicable Credit Notes

For turnover above ₹5 crore, a credit note without IRN is invalid under Rule 48(4). Build a pre-issuance checkpoint to confirm IRN generation.

The Checklist

Report credit notes in GSTR-1 before 30 November following the FY or before GSTR-9 filing, whichever is earlier.
Verify original invoice number and date against the register before issuing.
Reconcile GSTR-2B monthly and follow up with suppliers for missing uploads.
For post-supply discounts, obtain recipient’s ITC reversal confirmation.
Confirm IRN generation for credit notes if e-invoicing applies.

Frequently Asked Questions About ITC And Credit Note Mistakes

What interest rate applies if I availed excess ITC?
Interest is 18% per annum under Section 50(3), calculated from the date excess ITC was utilized.

Can the ITC reversal for a post-supply discount be done in the same month?
Yes. Reverse ITC in Table 4(B)(2) of GSTR-3B in the same month the credit note appears in GSTR-2B.

Frequently Asked Questions

What is the difference between a credit note and a debit note under GST?

A credit note reduces the tax and consideration due to the supplier, a debit note increases them. Both are governed by Section 34 of the CGST Act, 2017 and Rule 53 of the CGST Rules, 2017, and both share similar mandatory fields. Both are reported in GSTR-1 Table 9B.

My customer is unregistered. What fields change on the credit note format in GST?

For an unregistered recipient, capture name, full delivery address, state name, and state code per Rule 53(1)(d). The document is reported in GSTR-1 Table 9B under “Unregistered”.

I issued a credit note in FY 2025–26 but forgot to report it in GSTR-1. Can I still report it in FY 2026–27?

Yes, if within the outer time limit in Section 34(2), i.e., up to 30 November 2026 or the date of filing GSTR-9 for FY 2025–26, whichever is earlier. After that, output tax reduction is lost.

Does a credit note need an e-invoice even if the original invoice did not require one?

Yes, if your aggregate turnover exceeds ₹5 crore in any preceding year, credit notes must be e-invoiced under Notification No. 10/2023 – Central Tax, regardless of the original invoice’s status.

Can I issue one credit note to cancel an entire invoice, or must I issue line-item wise?

You may issue a single credit note for the full invoice. However, if multiple tax rates apply, state each rate’s taxable value and tax separately to pass GSTR-1 validation.

What happens if the supplier files GSTR-1 with the credit note but the recipient does not see it in GSTR-2B?

GSTR-2B is monthly and cutoff-based. If the supplier files after cutoff, the entry appears next month. Persistent absence usually indicates a GSTIN mismatch; the supplier must amend GSTR-1.

Is there a prescribed reason code list for credit notes in GSTR-1?

No standard reason code is mandated in Table 9B. Maintain consistent narrative reasons such as Sales Return, Price Reduction, or Deficiency In Service for audit trails.

If I use one Excel template for multiple entities, how do I avoid cross-posting under the wrong GSTIN?

Maintain separate files or sheets per GSTIN. Add a data check to ensure each row’s Supplier GSTIN matches the entity reference cell before creating the upload file.