Compliance Calendar – December 2025 (Checklist & Deadlines)

December 2025 Compliance Calendar for Startups, Businesses & Founders in India

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Staying compliant is not optional it is a legal and financial necessity. December 2025 brings multiple critical due dates for GST, TDS, advance tax, PF, ESI, ROC filings, and quarterly tax returns. Missing these deadlines can result in heavy penalties, interest, and compliance red flags for businesses and individuals alike.

This December 2025 Compliance Calendar provides a consolidated, easy-to-track list of all major statutory due dates applicable under GST, Income Tax, Companies Act, PF/ESI, and Professional Tax laws in India.

Why a Compliance Calendar Matters in December 2025

• Ensures timely GST return filing, TDS payments, and ROC filings
• Helps avoid late fees, penal interest, and prosecution risks
• Supports year-end financial closure and audit preparedness
• Enables proper advance tax planning before the financial year end
• Improves investor confidence and due-diligence readiness

Key Statutory Compliance Due Dates – December 2025

Here is a tabular compliance calendar for December 2025-

7th December 2025 (Sunday)

• TDS/TCS Deposit – All deductors/collectors
  Deposit tax deducted or collected at source for November 2025.

10th December 2025 (Wednesday)

• GSTR-7 & GSTR-8 – Government deductors & e-commerce operators
  GST TDS/TCS return for November 2025.

11th December 2025 (Thursday)

• GSTR-1 (Monthly) – Regular GST taxpayers
  Outward supply return for November 2025.

13th December 2025 (Saturday)

• GSTR-1 IFF (Optional) – QRMP scheme taxpayers
• GSTR-5 & GSTR-6 – Non-resident taxpayers & ISDs
  Invoice uploads & monthly returns for November 2025.

15th December 2025 (Monday)

• Form 16A & Form 27D – All deductors/collectors
  Issue of TDS/TCS certificates for Aug–Oct 2025.
• Professional Tax Payment / Return – Employers
  (Due date varies by state, e.g., Maharashtra).
• PF & ESI Payment / Return – All employers
  For wages of November 2025.
• Third Installment of Advance Tax – FY 2025–26
  Mandatory for individuals and corporates liable to advance tax.

20th December 2025 (Saturday)

• GSTR-3B (Monthly) – Regular GST taxpayers
• GSTR-5A – OIDAR service providers
  Summary GST returns for November 2025.

29th December 2025 (Monday)

• Forms 26QB / 26QC / 26QD / 26QE
  (TDS on property rent, professional payments, crypto, etc.)
  TDS challan-cum-statements for November 2025 under Sections 194-IA, 194-IB, 194M & 194S.

31st December 2025 (Wednesday)

• Quarterly TCS Return – Form 27EQ (Q3 FY 2025–26)
• Quarterly TDS Returns – Forms 24Q / 26Q / 27Q (Q3 FY 2025–26)
• Form 3BB – Statement by Stock Brokers for November 2025
• AOC-4 / AOC-4 XBRL / AOC-4 NBFC (Ind AS)
  Extended due date for FY 2024–25.
• MGT-7 & MGT-7A (Annual ROC Return)
  Extended due date for FY 2024–25.

Who Must Follow the December 2025 Compliance Calendar?

This calendar applies to:

• Private Limited Companies & OPCs
• Startups & MSMEs
• LLPs, Firms & Proprietorships
• GST-registered businesses
• TDS/TCS deductors
• Employers registered under PF, ESI & Professional Tax
• OIDAR service providers & non-resident taxpayers
• NBFCs and Ind-AS compliant entities

Summary of Key Forms & Their Purpose

Why Staying Compliant Matters

Non-compliance can lead to:

• Heavy interest and late fees under GST & Income-tax Act
• Director disqualification under the Companies Act
• Blocked refund claims & GST credit mismatches
• Adverse impact on funding, audits & investor due diligence
• Litigation and departmental scrutiny

For startups and scaling businesses, a clean compliance record directly impacts valuations and fund-raising success.

Compliance Tips from Treelife Experts

• Set up automated compliance alerts for all statutory deadlines.
• Reconcile GSTR-1 vs GSTR-3B before filing.
• Cross-check TDS entries with AIS & Form 26AS.
• Begin ROC annual filing well in advance of December deadlines.
• Maintain proper documentation for advance tax computation.

Conclusion

The December 2025 Compliance Calendar is one of the most critical months of the financial year, covering GST returns, quarterly TDS/TCS filings, advance tax, PF/ESI, and extended ROC filings. Proactive planning is essential to avoid year-end bottlenecks, regulatory scrutiny, and financial exposure.

For startups, SMEs, and growing enterprises, outsourcing compliance to experienced professionals ensures accuracy, peace of mind, and uninterrupted business growth.

Why Choose Treelife?

Treelife has been one of India’s most trusted legal and financial firms for over 10 years. We are proud to be trusted by over 1000 startups and investors for solving their problems and taking accountability.

Our team ensures:

• Zero missed deadlines
• Clean audit trails
• Investor-ready compliance
• Full statutory coverage across GST, Income Tax & MCA

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Treelife

Treelife Team | [email protected]

We are a legal and finance firm with a deep focus on the startup ecosystem. We offer a wide range of services, including Virtual CFO, Legal Support, Tax & Regulatory, and Global Expansion assistance.

Our goal at Treelife is to provide you with peace of mind and ease in business.