Step By Step Guide to Filing GST CMP-08

Updated: Jun 3, 2026 12 min read Hitesh Aggarwal
Quick Summary
  • CMP08 is a quarterly return form for composition dealers under the GST Composition Scheme.
  • Businesses with an annual turnover of up to ₹1.5 crore or ₹75 lakh in special states must file CMP08.
  • The due dates for filing CMP08 are the 18th of July, October, January, and April for each quarter.
  • Late filing incurs a penalty of ₹200 per day and an interest rate of 18% per annum.
  • CMP08 simplifies tax compliance by requiring less detailed data and can be filed easily with accounting software.

CMP-08 is a simplified quarterly return form for composition dealers under the  GST Composition Scheme . This guide explains who should file CMP-08, due dates, the step-by-step process, penalties for late filing, and how accounting software can help.

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What is CMP-08?

CMP-08 is a quarterly return form used to declare sales and pay tax under the GST Composition Scheme. It replaces quarterly GSTR-4 filings and is mandatory for composition taxpayers.

Now, CMP-08 is filed every quarter, and  GSTR-4  is filed only once at the end of the financial year.

Who Should File CMP-08?

  • Registered under GST Composition Scheme
  • Annual turnover ≤ ₹1.5 crore (or ₹75 lakh in special category states)
  • Service providers under the special ₹50 lakh limit composition scheme

Businesses must also ensure they meet eligibility conditions outlined under the  GST regime .

Due Dates for Filing CMP-08

Quarter

Q1

Months Covered

April to June

Due Date

18th July

Quarter

Q2

Months Covered

July to September

Due Date

18th October

Quarter

Q3

Months Covered

October to December

Due Date

18th January

Quarter

Q4

Months Covered

January to March

Due Date

18th April

Filing on time avoids late fees and interest penalties under  GST  provisions.

Step-by-Step Process to File CMP-08

  • Step 1: Visit  gst.gov.in  and log in
  • Step 2: Go to Services → Returns → Returns Dashboard
  • Step 3: Select financial year and return filing period → Click “Search”
  • Step 4: Click “Prepare Online” next to CMP-08
  • Step 5: Enter outward supplies and nil-rated/exempted sales
  • Step 6: Pay tax via cash or credit ledger → Click “Proceed to File”
  • Step 7: File using DSC or EVC → Download acknowledgment

Late Filing Penalty

  • ₹200 per day of delay (₹100 CGST + ₹100 SGST)
  • Maximum late fee capped at ₹5,000
  • Interest at 18% per annum on tax amount due

Tip: Always maintain a buffer in your  Input Tax Credit (ITC)  and ledger balances to avoid default.

CMP-08 vs GSTR-4: Know the Difference

Feature

Type

CMP-08

Quarterly summary return

GSTR-4

Annual return

Feature

Filing Frequency

CMP-08

Every quarter

GSTR-4

Once a year

Feature

Details Required

CMP-08

Sales and tax payment

GSTR-4

Sales, purchases, tax liability summary

While CMP-08 handles quarterly tax payments, GSTR-4 ensures annual reporting of all composition scheme activities.

Benefits of Filing CMP-08

  • Simplifies tax compliance for small businesses
  • No need for detailed invoice-level data
  • Reduces compliance burden and cost
  • Helps avoid late fee penalties

Using software like  BUSY GST Accounting Software  makes CMP-08 filing even easier.

Conclusion

CMP-08 filing is crucial for businesses under the  Composition Scheme . Filing it on time helps maintain compliance, reduce penalties, and ensure smooth GST management. Use accounting software to stay ahead of deadlines and avoid manual errors.

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Hitesh Aggarwal

Chartered Accountant

As a Chartered Accountant with over 12 years of experience, I am not only skilled in my profession but also passionate about writing. I specialize in producing insightful content on topics like GST, accounts payable, and income tax, confidently delivering valuable information that engages and informs my audience.

MRN: 529770 Delhi