Income Tax & TDS
GST
Advance Tax
Other Compliance
April 2026
No tax events scheduled for April 2026.
May 2026
No tax events scheduled for May 2026.
June 2026
7
JUN
TDS / TCS Payment
TDS/TCS deposit for deductions/collections made in May 2026
Critical
11
JUN
GST Return – GSTR-1 (Monthly)
Monthly GSTR-1 filing for taxpayers with turnover above ₹5 crores for May 2026
Critical
15
JUN
Advance Tax – 1st Instalment (15%)
First instalment of advance tax for FY 2026-27. Pay at least 15% of estimated annual tax liability.
Critical
15
JUN
Form 16 Issue Deadline
Employers must issue Form 16 (TDS certificate on salary) to employees for FY 2025-26
Critical
20
JUN
GST Return – GSTR-3B (Monthly)
Monthly GSTR-3B summary return filing for May 2026
Critical
30
JUN
TDS Return – Q4 FY 2025-26 (Form 24Q / 26Q)
Quarterly TDS return filing for Jan–Mar 2026 quarter
Critical
30
JUN
GSTR-4 Annual Return (Composition Dealers)
Annual return for composition scheme taxpayers for FY 2025-26
Important
July 2026
7
JUL
TDS / TCS Payment
TDS/TCS deposit for deductions/collections made in June 2026
Critical
11
JUL
GST Return – GSTR-1 (Monthly)
Monthly GSTR-1 filing for taxpayers with turnover above ₹5 crores for June 2026
Critical
20
JUL
GST Return – GSTR-3B (Monthly)
Monthly GSTR-3B summary return filing for June 2026
Critical
31
JUL
ITR Filing – Individuals & HUF (No Audit)
Due date for filing Income Tax Return for individuals, HUF, and firms not requiring audit for AY 2026-27
Critical
31
JUL
TDS Return – Q1 FY 2026-27 (Form 24Q / 26Q)
Quarterly TDS return filing for Apr–Jun 2026 quarter
Critical
August 2026
7
AUG
TDS / TCS Payment
TDS/TCS deposit for deductions/collections made in July 2026
Critical
11
AUG
GST Return – GSTR-1 (Monthly)
Monthly GSTR-1 filing for taxpayers with turnover above ₹5 crores for July 2026
Critical
20
AUG
GST Return – GSTR-3B (Monthly)
Monthly GSTR-3B summary return filing for July 2026
Critical
September 2026
7
SEP
TDS / TCS Payment
TDS/TCS deposit for deductions/collections made in August 2026
Critical
11
SEP
GST Return – GSTR-1 (Monthly)
Monthly GSTR-1 filing for taxpayers with turnover above ₹5 crores for August 2026
Critical
15
SEP
Advance Tax – 2nd Instalment (45%)
Second instalment of advance tax for FY 2026-27. Cumulative payment should reach 45% of estimated annual tax liability.
Critical
20
SEP
GST Return – GSTR-3B (Monthly)
Monthly GSTR-3B summary return filing for August 2026
Critical
30
SEP
ITR Filing – Tax Audit Cases
Due date for ITR filing by taxpayers requiring tax audit under Section 44AB for AY 2026-27
Critical
30
SEP
TDS Return – Q2 FY 2026-27 (Form 24Q / 26Q)
Quarterly TDS return filing for Jul–Sep 2026 quarter
Important
October 2026
7
OCT
TDS / TCS Payment
TDS/TCS deposit for deductions/collections made in September 2026
Critical
11
OCT
GST Return – GSTR-1 (Monthly)
Monthly GSTR-1 filing for taxpayers with turnover above ₹5 crores for September 2026
Critical
20
OCT
GST Return – GSTR-3B (Monthly)
Monthly GSTR-3B summary return filing for September 2026
Critical
31
OCT
ITR Filing – Companies & Transfer Pricing Cases
Due date for ITR filing for companies and international transfer pricing cases for AY 2026-27
Critical
November 2026
7
NOV
TDS / TCS Payment
TDS/TCS deposit for deductions/collections made in October 2026
Critical
11
NOV
GST Return – GSTR-1 (Monthly)
Monthly GSTR-1 filing for taxpayers with turnover above ₹5 crores for October 2026
Critical
20
NOV
GST Return – GSTR-3B (Monthly)
Monthly GSTR-3B summary return filing for October 2026
Critical
December 2026
7
DEC
TDS / TCS Payment
TDS/TCS deposit for deductions/collections made in November 2026
Critical
11
DEC
GST Return – GSTR-1 (Monthly)
Monthly GSTR-1 filing for taxpayers with turnover above ₹5 crores for November 2026
Critical
15
DEC
Advance Tax – 3rd Instalment (75%)
Third instalment of advance tax for FY 2026-27. Cumulative payment should reach 75% of estimated annual tax liability.
Critical
20
DEC
GST Return – GSTR-3B (Monthly)
Monthly GSTR-3B summary return filing for November 2026
Critical
31
DEC
TDS Return – Q3 FY 2026-27 (Form 24Q / 26Q)
Quarterly TDS return filing for Oct–Dec 2026 quarter
Important
January 2027
7
JAN
TDS / TCS Payment
TDS/TCS deposit for deductions/collections made in December 2026
Critical
11
JAN
GST Return – GSTR-1 (Monthly)
Monthly GSTR-1 filing for taxpayers with turnover above ₹5 crores for December 2026
Critical
15
JAN
Belated / Revised ITR Filing
Last date for filing belated or revised Income Tax Return for AY 2026-27
Critical
20
JAN
GST Return – GSTR-3B (Monthly)
Monthly GSTR-3B summary return filing for December 2026
Critical
February 2027
7
FEB
TDS / TCS Payment
TDS/TCS deposit for deductions/collections made in January 2027
Critical
11
FEB
GST Return – GSTR-1 (Monthly)
Monthly GSTR-1 filing for taxpayers with turnover above ₹5 crores for January 2027
Critical
20
FEB
GST Return – GSTR-3B (Monthly)
Monthly GSTR-3B summary return filing for January 2027
Critical
March 2027
7
FEB
TDS / TCS Payment
TDS/TCS deposit for deductions/collections made in January 2027
Critical
11
FEB
GST Return – GSTR-1 (Monthly)
Monthly GSTR-1 filing for taxpayers with turnover above ₹5 crores for January 2027
Critical
20
FEB
GST Return – GSTR-3B (Monthly)
Monthly GSTR-3B summary return filing for January 2027
Critical
Quick Reminders
Important monthly and quarterly compliance requirements
Monthly Compliance
- GST Return Filing (GSTR-1 & GSTR-3B)
- TDS Payment by 7th of next month
- ESI & PF Contributions
- Professional Tax Payment
Quarterly Compliance
- TDS Return Filing (24Q, 26Q, 27Q)
- Advance Tax Payment
- GSTR-1 for small taxpayers
- Form 15CA/15CB Filing
Annual Compliance
- Income Tax Return Filing
- Tax Audit Report
- GST Annual Return
- Form 16 Issuance
Important Notes
- Dates may vary for weekends/holidays
- Extended dates announced separately
- State-specific compliance may differ
- Consult CA for complex cases
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