GSTR-9 Annual Return Filing Guide 2026 — Who Must File, Due Date, Process | RushTax Blog

GSTR-9 is the annual GST return that consolidates all your monthly GSTR-1 and GSTR-3B filings for a financial year. For FY 2025-26, the due date is December 31, 2026. This guide covers everything you need to know.

What is GSTR-9?

GSTR-9 is an annual summary return filed by regular GST taxpayers. It consolidates:

All outward supplies (sales) reported in GSTR-1
All inward supplies (purchases) and ITC claimed in GSTR-3B
Tax paid during the year
Any amendments or corrections

Think of it as the annual reconciliation between your monthly returns and your books of accounts.

Who Must File GSTR-9?

Mandatory for:

Regular GST taxpayers with aggregate turnover above ₹2 crore in FY 2025-26

Exempt from GSTR-9:

Taxpayers with turnover up to ₹2 crore (filing is optional but recommended)
Composition scheme dealers (they file GSTR-9A instead)
Input Service Distributors (ISD)
Non-resident taxable persons
Casual taxable persons

GSTR-9C (Reconciliation Statement):

Mandatory for taxpayers with turnover above ₹5 crore
Must be certified by a Chartered Accountant or Cost Accountant
Reconciles GSTR-9 with audited financial statements

Due Date for GSTR-9 (FY 2025-26)

December 31, 2026

This is the standard due date. The GST Council may extend it — check the GST portal for any notifications.

Late fee: ₹200 per day (₹100 CGST + ₹100 SGST), subject to a maximum of 0.25% of turnover in the state.

Key Sections of GSTR-9

Part I: Basic Details

GSTIN, legal name, trade name, financial year.

Part II: Outward and Inward Supplies (from GSTR-1 and GSTR-3B)

Table 4: Outward supplies (taxable, exempt, nil-rated, non-GST)
Table 5: Outward supplies on which tax is not payable
Table 6: ITC availed during the year
Table 7: ITC reversed during the year
Table 8: Other ITC-related information

Part III: Tax Paid

Table 9: Tax paid as declared in GSTR-3B
Table 10: Supplies and advances on which tax is to be paid

Part IV: Transactions of Previous FY Declared in Current FY

Amendments and corrections made in April-September 2026 for FY 2025-26 transactions.

Part V: HSN-wise Summary

HSN codes for outward and inward supplies.

How to Prepare for GSTR-9 Filing

Step 1: Reconcile GSTR-1 with Books

Compare your GSTR-1 filings (outward supplies) with your sales register:

Total sales in books vs total sales in GSTR-1
Identify any invoices filed in GSTR-1 but not in books (or vice versa)
Check for amendments (GSTR-1A) filed during the year

Step 2: Reconcile GSTR-3B with Books

Compare your GSTR-3B filings (ITC and tax paid) with your purchase register:

Total ITC claimed in GSTR-3B vs eligible ITC in books
ITC reversed (Section 17(5), Rule 42/43)
Tax paid in cash vs tax paid through ITC

Step 3: Reconcile GSTR-1 with GSTR-3B

The outward supply liability in GSTR-1 should match the tax paid in GSTR-3B. Common differences:

Invoices filed in GSTR-1 but tax not paid in GSTR-3B
Tax paid in GSTR-3B but invoices not filed in GSTR-1

Step 4: Identify Differences and Correct

Any differences between GSTR-1, GSTR-3B, and books must be explained in GSTR-9. You can pay additional tax or claim additional ITC in GSTR-9 (subject to the November 30 deadline for ITC).

Common Mistakes in GSTR-9

1. Not Reconciling Before Filing

Filing GSTR-9 without reconciling GSTR-1, GSTR-3B, and books leads to errors that cannot be corrected after filing.

2. Missing Amendments

Amendments filed in GSTR-1A for FY 2025-26 transactions must be included in GSTR-9.

3. Incorrect ITC Figures

ITC figures in GSTR-9 must match the cumulative ITC in GSTR-3B for the year. Do not include ITC claimed in April-September 2026 for FY 2025-26 transactions in the FY 2025-26 GSTR-9.

4. Wrong HSN Codes

HSN-wise summary must be accurate. Use 4-digit HSN for turnover up to ₹5 crore and 6-digit HSN for turnover above ₹5 crore.

5. Not Paying Differential Tax

If GSTR-9 shows additional tax liability (due to reconciliation differences), pay it before filing. Unpaid tax attracts 18% interest.

GSTR-9 vs GSTR-9C

Feature	GSTR-9	GSTR-9C
Who files	All regular taxpayers (turnover > ₹2Cr)	Taxpayers with turnover > ₹5Cr
Certified by	Self-certified	CA or CMA
Purpose	Annual summary	Reconciliation with audited accounts
Due date	December 31, 2026	December 31, 2026

Section 16(4) — ITC Deadline

Critical: All ITC for FY 2025-26 must be claimed by November 30, 2026 (in the GSTR-3B for October 2026). After this date, you cannot claim ITC for FY 2025-26 purchases, even if you file GSTR-9.

This is the most important deadline for ITC — more important than the GSTR-9 due date.

How to File GSTR-9

Login to gst.gov.in
Go to Services → Returns → Annual Return
Select FY 2025-26 and click Prepare Online
The portal pre-fills data from your GSTR-1 and GSTR-3B
Review and correct each table
Pay any additional tax liability
Preview the return
File using DSC (Digital Signature Certificate) or EVC (Electronic Verification Code)

Frequently Asked Questions

Is GSTR-9 mandatory for small businesses?

GSTR-9 is mandatory only for taxpayers with turnover above ₹2 crore. Taxpayers with turnover up to ₹2 crore are exempt but can file voluntarily.

Can I amend GSTR-9 after filing?

No. GSTR-9 cannot be amended after filing. This is why reconciliation before filing is critical.

What if I missed the GSTR-9 deadline?

You can still file with a late fee of ₹200 per day (maximum 0.25% of turnover). There is no provision to waive the late fee.

Does GSTR-9 affect my ITC claims?

GSTR-9 itself does not affect ITC. However, if reconciliation reveals unclaimed ITC, you must claim it in GSTR-3B before November 30, 2026 (Section 16(4) deadline).

Need help with GSTR-9 reconciliation and filing? I handle annual GST returns for businesses of all sizes. Message me on WhatsApp for a quote.