Tax & Compliance

India GST Compliance Calendar 2026: Key Deadlines and Filing Requirements

Comprehensive calendar of all GST filing deadlines, return types, and compliance requirements for businesses operating in India throughout 2026.

January 10, 202612 min read
Calendar with tax deadline markers and calculator on wooden desk

Staying on top of GST filing requirements is important for businesses operating in India. This calendar provides a general overview of key return types and filing cadences.

Understanding GST Return Types

GSTR-1: Outward Supplies

  • Monthly for turnover > INR 5 crores
  • Quarterly for turnover ≤ INR 5 crores (QRMP scheme)

GSTR-3B: Summary Return

  • Filed monthly by all regular taxpayers

GSTR-9: Annual Return

  • Filed annually by all regular taxpayers

Note: GST deadlines and thresholds are subject to government notifications. Always verify current deadlines with a qualified GST practitioner.

Advisory note: This article is for general information and awareness purposes only. Inaac Advisors provides advisory and execution support — not legal, tax, or regulatory opinions. Legal, tax, immigration and regulatory conclusions require qualified professional review.

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