Due date Chart for the month of September 2026

07 September 2026

Due date for deposit of Tax deducted/collected for the month of August 2026.

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10 September 2026

Due date for filing GSTR-8 for E-commerce operator for Tax Collected at Source (TCS) collected for the month of August 2026

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10 September 2026

Due date to file GSTR-7 for Tax Deducted at Source (TDS) and deposited under GST for the month of August 2026

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11 September 2026

Due date to file GSTR 1 for the period of August 2026 for the Taxpayers who opted for monthly filing.

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13 September 2026

Due date to file monthly Return of Input Service Distributor (ISD) GSTR-6.

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13 September 2026

Due date for filing IFF (Invoice Furnishing Facility) for August 2026 under the Quarterly Return Monthly Payment (QRMP) scheme.

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13 September 2026

Every Non-resident taxable person file Monthly GSTR-5 Return for the month of August 2026.

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14 September 2026

Due date for issue of TDS Certificate (Form 132, earliar known as Form 16B, 16C, 16D, 16E) for tax deducted during July 2026 under Section 395(4) of the Income-tax Act, 2025

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15 September 2026

Due date for payment of Second Installment of Advance Tax for the T.Y. 2026-27.

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15 September 2026

Payment of PF and ESIC for the month of August 2026

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20 September 2026

Due date to file GSTR-3B for the month of August 2026 for the Taxpayers who opted for monthly filing.

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20 September 2026

Due date to file GSTR-5A for the month of August 2026 by the Non-resident suppliers or OIDAR service providers (e.g., cloud storage, streaming, SaaS, online gaming) supplying to B2C (non-taxable) customers in India.

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25 September 2026

Due date for payment of tax liability by the person opting for under QRMP – via form GST PMT–06 for August 2026

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27 September 2026

Due date for filing Financial Statements by One Person Company

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30 September 2026

Due date to hold Annual General Meeting (AGM) of companies.

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30 September 2026

Due date for filing the Tax Audit Report, where Transfer Pricing audit is not applicable.

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30 September 2026

Due date for payment of tax and furnishing of Form 141 (Challan-cum-Statement) in respect of tax deducted during August 2026 under Section 393(1) of the Income Tax Act, 2025.(Earlier known as 194-IA, 194-IB, 194M, 194S)

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30 September 2026

Due date to Furnish audit report in 10B/10BB of trust or institution if the due date of ITR is 31/10/2026

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