The Ultimate Tax & GST Compliance Calendar for August 2026#
Managing Compliance in August 2026#
For accountants, tax professionals, and business owners, keeping track of statutory due dates is a monthly challenge. Missing a deadline doesn't just mean late fees; it can lead to blocked e-way bills, frozen GSTINs, and disrupted supply chains.
Bookmark this ultimate compliance calendar for August 2026 to ensure you never miss a critical filing.
Key Compliance Deadlines#
August 7: TDS and TCS Payment#
The deadline for paying the Tax Deducted at Source (TDS) and Tax Collected at Source (TCS) deducted in the month of July. Ensure you are utilizing the updated challan codes under the new Income Tax Act 2025 provisions.
August 10: Professional Tax#
The due date for Professional Tax payment for the month of July (applicable for states that have levied Professional Tax, such as Maharashtra, Karnataka, and West Bengal).
August 11: GSTR-1 Filing#
The critical deadline for filing GSTR-1 (Details of outward supplies) for regular taxpayers filing on a monthly basis. Ensure this is filed on time so your buyers can seamlessly claim their Input Tax Credit (ITC) in their GSTR-2B.
August 13: IFF Filing (QRMP Scheme)#
The due date for utilizing the Invoice Furnishing Facility (IFF) for taxpayers opted into the QRMP (Quarterly Return Monthly Payment) scheme. This allows small taxpayers to pass on ITC to their B2B buyers for the month of July.
August 15: EPF/ESI and TDS Certificates#
- EPF & ESI: The deadline for paying Provident Fund (PF) and Employee State Insurance (ESI) contributions for July.
- TDS Certificates: The due date for issuing the Q1 (April to June) TDS Certificates (Form 130/16A) to deductees. Ensure your employees and vendors receive these promptly.
August 20/22/24: GSTR-3B and PMT-06#
- GSTR-3B: The deadline for filing the summary GST return and paying the tax liability for July (for monthly filers). The date (20th, 22nd, or 24th) varies based on the state in which your principal place of business is registered.
- PMT-06: The due date for depositing the tax amount for July via challan PMT-06 for taxpayers under the QRMP scheme.
August 31: Extended ITR Deadline#
The extended deadline for filing Income Tax Returns (ITR-3 and ITR-4) for the previous financial year for non-audit cases. If you missed the original July 31st deadline, ensure you file by this extended cutoff to minimize penal interest.
💡 Bonus Insight: Beyond Just Filing#
Remind your accounts team that GST compliance isn't merely about hitting the 'File' button. True compliance involves:
- GSTR-2B Matching: Rigorously matching your GSTR-2B with your internal purchase register before filing GSTR-3B.
- Rule 37A Verification: Identifying if any of your suppliers have defaulted on their tax payments, requiring you to proactively reverse the claimed ITC to avoid departmental notices.
- Vendor Communication: Maintaining an active feedback loop with vendors who fail to upload invoices on time.