Your Octoberm2025 Compliance Guide ROC, GST, TDS & More

Compliance Calendar for the Month of October 2025

Introduction

As October 2025 approaches, it is crucial for businesses, professionals, and individual taxpayers to stay updated with key statutory deadlines. From GST filings to PF/ESI contributions, TDS returns, and Income Tax filings, missing any due date may lead to penalties and interest. This compliance calendar highlights all the important tax and regulatory due dates for October 2025, helping you stay prepared and compliant. 

Important Due Dates for the GST Returns for October 2025  

Due Date

Form to be Filed

Period

Who Should File?

10.10.2025

GSTR-7

September 2025

Persons required to deduct TDS under GST (e.g., Govt. Depts., PSUs)

10.10.2025

GSTR-8

September 2025

E-commerce operators required to collect TCS under GST

11.10.2025

GSTR-1 (monthly)

September 2025

Registered taxpayers (monthly filers)

13.10.2025

GSTR-5

September 2025

Non-resident taxable persons

13.10.2025

GSTR-6

September 2025

Input Service Distributors (ISD)

18.10.2025

CMP-08

July–Sep 2025

Composition taxpayers (quarterly challan)

20.10.2025

GSTR-3B

Sep 2025

Regular taxpayers with turnover above ₹5 crore or monthly filers

22.10.2025

GSTR-3B (Quarterly – QRMP)

July–Sep 2025

QRMP scheme taxpayers (quarterly)

Notes:

  • GSTR-1: Monthly due on 11.10.2025; QRMP taxpayers may use IFF facility (due 13th of following month).

  • GSTR-7 & GSTR-8: Always due on the 10th of the following month.

  • GSTR-3B: Monthly filers must file by 20.10.2025; QRMP quarterly filing is due 22.10.2025.

  • CMP-08: Due on 18.10.2025 for the July–September quarter.

Essential Due Dates for the Income Tax / PF / ESI Compliance for October 2025  

Due Date

Form / Compliance

Period

Who Should File?

07.10.2025

Deposit of TDS/TCS liability

September 2025

All TDS/TCS deductors

15.10.2025

PF Contribution & ECR Filing

September 2025

Employers registered under EPFO

15.10.2025

ESI Contribution & Return Filing

September 2025

Employers registered under ESIC

15.10.2025

TCS Statement (Form 27EQ)

July–Sep 2025

All TCS deductors

15.10.2025

Uploading of Form 15G/15H

July–Sep 2025

Banks / deductors

30.10.2025

TCS Certificate (Form 27D)

July–Sep 2025

Deductors who collected TCS

30.10.2025

Challan-cum-statement (Sec 194-IA/IB/M/S)

September 2025

Persons deducting TDS on property, rent, etc.

31.10.2025

TDS Return (Form 24Q/26Q)

July–Sep 2025

Deductors of salary and non-salary TDS

31.10.2025

ITR Filing (Audit cases)

FY 2024–25

Companies / individuals / non-corporates subject to audit

Note: Advance Tax installment is not applicable in October 2025 (next due in December). Professional Tax timelines vary across states; refer to the respective State Commercial Tax portals.

Penalty for GSTR-3B Late Filing  

For Normal Taxpayers:

₹50 per day (₹25 CGST + ₹25 SGST) for each day of delay.

Maximum penalty:

  • ₹2,000 for taxpayers with turnover up to ₹1.5 crore

  • ₹5,000 for taxpayers with turnover between ₹1.5 crore and ₹5 crore

  • ₹10,000 for taxpayers with turnover above ₹5 crore

For Nil Return:

  • ₹20 per day (₹10 CGST + ₹10 SGST)

  • Maximum: ₹500

Conclusion

Staying compliant with statutory deadlines in October 2025 is crucial to avoid penalties and maintain smooth business operations. Key filings this month include GST returns for September, PF/ESI payments, TDS/TCS statements, and ITRs for audit cases. Taxpayers are advised to regularly check official portals such as GST, EPFO, ESIC, and Income Tax for any last-minute extensions or notifications.

 Suggested Read 

FAQs  

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1. When is the GSTR-1 (monthly) due for September 2025?

It is due on 11th October 2025 for all registered monthly filers.

2. Can QRMP taxpayers use the Invoice Furnishing Facility (IFF) in October 2025?

Yes. For September invoices, the IFF can be filed up to 13th October 2025.

3. Who must file GSTR-7 and by what date?

TDS deductors under GST must file GSTR-7 by 10th October 2025.

4. What is the due date for CMP-08 in October 2025?

CMP-08 for the July–September quarter is due on 18th October 2025.

5. When are PF and ESI contributions for September 2025 due?

Both PF and ESI must be paid and filed by 15th October 2025.

6. What is the TDS return due date in October 2025?

TDS returns for the July–September quarter (Forms 24Q/26Q) must be filed by 31st October 2025.

7. Is there any ITR filing deadline in October 2025?

Yes. ITRs for taxpayers subject to tax audit for FY 2024–25 are due on 31st October 2025.

8. What is the deadline for TCS statements?

Form 27EQ for July–September must be filed by 15th October 2025.

9. Can PF/ESI be filed after the due date?

Yes, but it attracts late fees, interest, and penalties from EPFO/ESIC.

10. Where can I check Professional Tax due dates?

Professional Tax deadlines differ across states. Taxpayers should refer to their respective State Commercial Tax portal.

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Author: dhruvi

Dhruvi Darji is a Content Writer at Ebizfiling who turned her passion for writing into a full-time career. She holds a Bachelor's degree in Computer Applications from KSV University and has been writing content professionally since 2023. Over time, she has worked on various topics and enjoys creating simple, clear, and helpful content that helps people gain a better understanding. She also holds a 7-band IELTS score, reflecting her strong grasp of language and communication. Beyond work, Dhruvi enjoys journaling and crafting stories.

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