Compliance calendar
Income tax & GST due dates in India
The statutory dates Bluman tracks for its clients for September 2026 — monthly GST and TDS filings, the 2nd advance-tax instalment, and the tax-audit and statutory-audit deadlines. Each date links to the service that handles that filing.
Next deadlines
Calculated from today's date against the September 2026 statutory calendar below.
September 2026 compliance calendar
Every statutory due date this month, with the category, the requirement or form, and who it applies to.
| Date | Category | Requirement / Form | Target group / Details | Bluman service |
|---|---|---|---|---|
| 07 Sept | Income Tax | TDS / TCS Deposit | Deposit TDS/TCS deducted/collected in August 2026. (Non-challan government deposits: same day). | TDS Filing |
| 10 Sept | GST | GSTR-7 & GSTR-8 | Returns for TDS deductors & e-commerce TCS collectors (August 2026). | — |
| 11 Sept | GST | GSTR-1 | Monthly outward supply return for regular taxpayers (>₹5 Cr turnover / monthly filers) for August 2026. | GSTR-1 Filing |
| 13 Sept | GST | GSTR-1 (IFF) | Optional Invoice Furnishing Facility for QRMP quarterly filers for August 2026. | GSTR-1 Filing |
| 13 Sept | GST | GSTR-6 | Return for Input Service Distributors (ISD) for August 2026. | — |
| 14 Sept | Income Tax | Form 13 | Issue TDS Certificates for tax deducted under specific sections in July 2026. | TDS Filing |
| 15 Sept | Income Tax | Advance Tax | Payment of the 2nd Instalment of Advance Tax for FY 2026–27. | Advance Tax Computation |
| 15 Sept | Income Tax | Form 1 | Client code modification report submitted by stock exchanges for August 2026. | — |
| 15 Sept | Income Tax | Form 13A | Non-challan TDS/TCS statement filing by Government offices for August 2026. | — |
| 20 Sept | GST | GSTR-3B | Monthly summary return and tax payment for regular taxpayers (>₹5 Cr turnover) for August 2026. | GSTR-3B Filing |
| 20 Sept | GST | GSTR-5 & GSTR-5A | Monthly returns for Non-Resident Taxable Persons and OIDAR service providers for August 2026. | — |
| 25 Sept | GST | PMT-06 | Challan payment for taxpayers under the QRMP scheme for August 2026. | — |
| 28 Sept | GST | GSTR-11 | Statement of inward supplies for Unique Identification Number (UIN) holders for August 2026. | — |
| 30 Sept | Income Tax | Form 14 | Filing of Challan-cum-Statement for TDS deducted for August 2026. | TDS Filing |
| 30 Sept | Income Tax | Form 17 | Application for registration update by Income Tax Practitioners. | — |
| 30 Sept | Income Tax | Statutory Audit Reports | Submission of special audit reports & forms (e.g., Form 10B/10BB for trusts/institutions, 29C, 66, 10-IL, 10DA, 10CCB). | — |
| 30 Sept | Income Tax | Tax Audit Report | Submission of Tax Audit Report u/s 44AB for AY 2026–27 for non-corporate assessees (whose ITR is due by Oct 31). | Tax Audit |
Due dates are as notified by the Income Tax Department and GSTN and can be extended or revised by circular. Bluman updates this page when a date changes. For a filing plan built around your own registrations, book a consultation or browse all tax and compliance services.