GSTR-3B (QRMP) Due Date – 22 October 2026 | GST Compliance Update for July–September 2026
GST compliance is an essential responsibility for businesses registered under the Goods and Services Tax system in India. Filing returns on time helps businesses maintain accurate tax records, manage their tax liabilities, and avoid unnecessary late fees and interest.
For eligible taxpayers registered under the Quarterly Return Monthly Payment (QRMP) Scheme, the quarterly GSTR-3B return for July–September 2026 is due on 22 October 2026 for the applicable state/UT group, which includes Tamil Nadu.
Taxpayers should confirm the due date applicable to their principal place of business and complete their return preparation well before the deadline.
At Taxla Services Pvt. Ltd., Chennai, we help businesses understand their GST obligations, organise tax records, reconcile input tax credit, and prepare for timely return filing.
1. What Is GSTR-3B?
GSTR-3B is a summary GST return in which registered taxpayers report relevant outward tax liabilities, eligible input tax credit (ITC), and other applicable details used to determine their net GST payable.
Unlike GSTR-1, which reports details of outward supplies, GSTR-3B provides a summary of tax liabilities and eligible credits for the relevant tax period.
Taxpayers must ensure that the information reported in GSTR-3B is accurate and consistent with their books of accounts, sales records, purchase records, and other applicable GST documents.
Incorrect reporting may lead to tax short-payment, excess ITC claims, reconciliation differences, or future notices from the tax authorities.
2. What Is the QRMP Scheme?
The Quarterly Return Monthly Payment Scheme was introduced to simplify GST compliance for eligible small taxpayers.
Under this scheme, eligible registered persons can file GSTR-1 and GSTR-3B on a quarterly basis while making tax payments monthly for the first two months of the quarter, where applicable.
The scheme can reduce the frequency of return filing and help eligible businesses manage their compliance workload. However, it does not eliminate the need to maintain monthly sales and purchase records or pay applicable tax within the prescribed timelines.
Businesses should check their eligibility and confirm that the relevant GST registration is enrolled in the QRMP scheme.
3. GSTR-3B Due Date for July–September 2026
The following dates are relevant for quarterly GSTR-3B filing for the July–September 2026 quarter:
Return period: July–September 2026
Due date: 22 October 2026 for the applicable state/UT group
Other state/UT group: Generally 24 October 2026
Applicable taxpayers: Eligible registered persons filing quarterly GSTR-3B under the QRMP scheme
The 22 October due date applies to the state/UT group that includes Tamil Nadu. Taxpayers whose principal place of business falls within the other group should verify the applicable 24 October deadline.
Always check the GST Portal and any applicable government notifications for changes or extensions before filing.
4. Who Should Pay Attention to This Deadline?
The deadline is particularly relevant to businesses that have opted for the QRMP scheme and are required to file quarterly GSTR-3B.
Examples may include eligible small businesses, retailers, traders, service providers, and other registered taxpayers who satisfy the scheme's conditions.
Taxpayers should not assume that every GST-registered business follows the quarterly filing schedule. Regular monthly filers generally have a different GSTR-3B due date.
Businesses with multiple GST registrations should also verify the filing frequency and compliance status of each registration separately.
5. Documents and Records to Prepare Before Filing
Preparing the necessary information in advance can help reduce errors and last-minute difficulties.
Important records to review include:
Sales invoices and credit or debit notes.
Purchase invoices and expense records.
Details of eligible and ineligible input tax credit.
GSTR-1 and relevant outward-supply records.
GSTR-2B and supporting purchase documents.
Details of reverse charge mechanism (RCM) liabilities, where applicable.
Electronic cash ledger and electronic credit ledger balances.
Details of previous tax payments and any relevant adjustments.
Books of accounts and bank records, wherever needed for verification.
Businesses should ensure that all applicable transactions for the quarter are recorded correctly. Missing invoices, duplicated entries, and incorrect tax classifications should be reviewed before submitting the return.
6. Input Tax Credit Reconciliation: An Essential Step
Input tax credit allows eligible businesses to offset GST paid on qualifying purchases against their output tax liability, subject to the applicable provisions and conditions.
Before filing GSTR-3B, taxpayers should compare their purchase records with the available GSTR-2B information and identify differences that require investigation.
Common issues include invoices missing from GSTR-2B, differences in taxable values or GST amounts, duplicate entries, credit notes, and ITC that may not be eligible under the applicable rules.
Businesses should claim only eligible ITC after completing the required checks. Where discrepancies arise, they should follow up with suppliers and maintain appropriate supporting documentation.
A careful reconciliation process helps improve the accuracy of GST returns and reduces the risk of future disputes.
7. Monthly Tax Payments Under QRMP
Although GSTR-3B is filed quarterly under QRMP, eligible taxpayers generally need to discharge their tax liabilities for the first two months of the quarter through the prescribed monthly payment process.
The applicable payment mechanism may involve Form GST PMT-06, subject to the taxpayer's circumstances and the scheme's rules.
For the July–September 2026 quarter, businesses should review their July and August tax payments and ensure that the quarterly return accurately reflects the tax liability and payments for the entire quarter.
The final tax liability should be reconciled before filing. Any balance payable should be paid using the appropriate method, and the taxpayer should retain relevant challans and payment records.
8. What Happens If GSTR-3B Is Filed Late?
Late filing can result in late fees under the applicable GST provisions. Interest may also be payable on delayed tax payments, depending on the circumstances and the relevant statutory requirements.
The actual amount depends on factors such as the duration of delay, the nature of the return, tax payable, and applicable statutory limits or relief.
Late filing can also affect compliance tracking and create additional administrative work for the business.
To avoid these issues, taxpayers should not wait until the last day to reconcile records, arrange funds, and complete the filing process.
If a delay or discrepancy has already occurred, seek professional guidance to determine the appropriate corrective steps.
9. Practical Checklist Before Submitting GSTR-3B
Businesses can follow this simple checklist before filing their quarterly return:
Confirm that the GST registration is covered by the QRMP scheme.
Verify the applicable due date for the principal place of business.
Complete sales and purchase reconciliations for July–September 2026.
Review GSTR-1 and GSTR-2B information.
Verify eligible ITC and applicable reverse charge liabilities.
Reconcile monthly tax payments and the remaining tax payable.
Check the return for errors before submission.
File GSTR-3B and retain the acknowledgement and payment records.
These steps can help businesses improve the accuracy of their returns and maintain a more organised compliance process.
10. How Taxla Services Pvt. Ltd. Can Help
GST compliance involves more than submitting a return. Businesses need reliable records, accurate reconciliations, appropriate tax calculations, and timely follow-up on discrepancies.
Taxla Services Pvt. Ltd., Chennai, can assist businesses with GST compliance support, return preparation, ITC reconciliation, review of relevant tax records, and guidance on applicable filing requirements.
Professional assistance can be especially useful for businesses managing multiple transactions, supplier discrepancies, reverse charge liabilities, or limited internal accounting resources.
Our aim is to help businesses maintain organised tax records, reduce avoidable errors, and manage their GST responsibilities with greater confidence.
Conclusion: File GSTR-3B on Time
The quarterly GSTR-3B return for July–September 2026 is an important compliance requirement for eligible taxpayers under the QRMP scheme.
For the applicable state/UT group, including Tamil Nadu, the due date is 22 October 2026. Taxpayers in the other state/UT group should generally note the 24 October 2026 deadline, subject to applicable notifications.
Review your records, reconcile ITC, verify tax payments, and submit the return within the prescribed time.
Stay compliant. File on time. Focus on your business!
Contact Taxla Services Pvt. Ltd.
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