Why GST Filing Feels Hard (And How Composition Helps)

Running a small business in India comes with a lot of joy and a lot of paperwork.

If you've ever sat in front of the GST portal, staring at a screen full of forms, wondering where to even begin, you're not alone. Thousands of small traders, shopkeepers, and service providers feel exactly the same way every month.

Here's the honest truth: regular GST filling can be genuinely complex. You need to file monthly returns, maintain detailed invoices, track input tax credit, and keep up with ever-changing rules. For a small grocery shop owner or a local restaurant, that's a huge burden.

That's exactly why the Indian government created the GST Composition Scheme a simpler, friendlier way to handle your tax obligations without the monthly headache.

In this guide, you'll learn everything about GST filling under the Composition Scheme. We'll cover who qualifies, what tax rates apply, which forms you need to file, when to file them, and the common mistakes that catch small business owners off guard.

Whether you're brand new to GST or just looking to switch to a simpler filing path, this article is your go-to resource. Let's get started.

What Is the GST Composition Scheme?

The GST Composition Scheme is a simplified tax payment option available to small businesses in India under Section 10 of the CGST Act, 2017.

Instead of following the full, complex GST system — with multiple monthly returns and input tax credit tracking — eligible businesses can pay GST at a fixed, low percentage of their total turnover. The rates range from just 1% to 6% depending on the type of business.

Think of it this way: imagine a regular GST filer as someone who needs to fill out a detailed exam paper every single month. A composition taxpayer, on the other hand, just needs to submit a short answer form every quarter — and one summary paper at the end of the year.

The goal is simple: less paperwork, more business.

This scheme was introduced because the government recognized that small businesses don't always have dedicated accountants or large finance teams. The composition route makes GST filling manageable for everyone, from a small-town kirana store to a neighbourhood restaurant.

Expert Insight: The Composition Scheme is governed under Section 10 of the CGST Act. Businesses registered under it are legally known as "Composition Taxable Persons." They have a distinct set of rights and restrictions compared to regular GST taxpayers.

Who Can Opt for the Composition Scheme? (Eligibility)

Not every business can opt into the Composition Scheme. The government has laid out clear eligibility rules to ensure only genuinely small businesses take advantage of it.

Here's who qualifies:

• Manufacturers and traders of taxable goods-Those who buy and sell products (excluding certain restricted goods like ice cream, pan masala, and tobacco)

• Restaurants not serving alcohol-Food businesses that don't sell alcoholic beverages

• Service providers-Businesses offering services (or a mix of goods and services) with annual turnover up to ₹50 lakh can opt under a special provision.

The most important criterion is your aggregate annual turnover in the previous financial year. If your turnover falls within the prescribed limits, you are generally eligible.

To formally opt in, existing taxpayers must file Form GST CMP-02 on the GST portal before the start of the financial year (i.e., before March 31st). New registrants can indicate their preference directly in Form GST REG-01 at the time of registration.

Who Cannot Use the Composition Scheme?

Just as important as knowing who can opt in — you need to know who is excluded. The following businesses cannot use the Composition Scheme for their GST filling:

• Manufacturers of ice cream, pan masala, tobacco, and related products

• Businesses making inter-state supplies (selling goods across state borders)

• Sellers supplying goods through e-commerce operators (like Amazon or Flipkart)

• Businesses registered under GST in more than one state on the same PAN cannot opt in for some states and opt out for others — it must apply across all registrations

• Businesses dealing in non-taxable goods under GST

• Casual taxable persons or non-resident taxable persons

• Businesses that import services from outside India

If any of these situations apply to you, the regular GST system is mandatory, and you'll need to go through the full GST filling process each month.

Turnover Limits You Must Know

The Composition Scheme has specific turnover thresholds. Exceeding these limits means you must exit the scheme and move to the regular GST filing process.

Here are the current limits:
 

Important Note: These limits are calculated on your aggregate turnover across all your business operations under the same PAN, not just from one location or product line.

If your turnover exceeds the limit at any point during the financial year, you are legally required to exit the Composition Scheme immediately. Your GST filling obligations will shift to the regular monthly return process from that point onward.

GST Tax Rates Under the Composition Scheme

One of the biggest benefits of this scheme is the low, flat tax rate. Here's a clear breakdown:The key thing to remember here is that this tax is calculated on your total turnover not on your profit. So if your shop has ₹10 lakh in sales during a quarter and you're a trader, you pay 1% of ₹10 lakh to ₹10,000 in GST regardless of how much you spent to buy the goods.
 

This makes the calculation incredibly straightforward, which is a major reason why so many small businesses prefer GST filling under the Composition Scheme.

How GST Filling Works Under the Composition Scheme

Now let's get into the core of how GST filling actually works if you're a composition taxpayer.

Unlike regular GST filers who must submit GSTR-1 and GSTR-3B every month, composition taxpayers only need to deal with two forms throughout the year:
 

1. Form CMP-08—Filed every quarter (for payment of self-assessed tax)

2. Form GSTR-4—Filed once a year (annual return)

That's it. No monthly returns. No complex input tax credit reconciliation. Just four quarterly payment statements and one annual summary.

This dramatically reduces the time, effort, and cost associated with GST filling —which is exactly the point of the entire scheme.

CMP-08 Your Quarterly Payment Statement
 

Form CMP-08 is the heartbeat of your GST filling under the Composition Scheme. It is a statement-cum-challan—meaning it both declares your tax liability and facilitates payment for the quarter.

What Does CMP-08 Capture?

• Outward taxable turnover The value of all goods or services you supplied during the quarter

• Inward supplies liable to reverse charge Purchases where you, as the buyer, must pay the GST (not the seller)

• Self-assessed tax payable Calculated automatically by the GST portal based on your applicable rate

CMP-08 Due Dates (FY 2025–26)
 

Penalty for Late CMP-08 Filing

Miss the due date, and the consequences kick in quickly. A late filing fee of ₹200 per day (₹100 CGST + ₹100 SGST) is charged, capped at a maximum of ₹5,000. Additionally, if you miss CMP-08 filings for two consecutive quarters, your e-way bill generation will be blocked — which can seriously disrupt your business operations.
 

Practical Tip: Even if you had zero sales in a quarter, you must still file CMP-08 as a nil return. Skipping it is not an option.

GSTR-4 Your Annual Return Explained

Once the financial year ends, composition taxpayers must file Form GSTR-4—the annual return that consolidates everything you did throughout the year.

What Does GSTR-4 Include?

1. Summary of all inward supplies (purchases made during the year)

2. Details of reverse charge transactions

3. CMP-08 summary — auto-populated from your quarterly filings

4. Tax rate-wise breakup of your supplies with IGST, CGST, SGST, and cess

5. TDS/TCS credits received (if any)

6. Tax payable, paid, and any balance liability including interest or late fees

GSTR-4 Due Date

From FY 2024–25 onwards, the GSTR-4 due date has been permanently extended to 30th June of the following year (updated via Notification No. 12/2024). So for FY 2025–26, your GSTR-4 is due on 30th June 2026.

Important Rules for GSTR-4

• You cannot file GSTR-4 unless all four quarterly CMP-08 statements are already filed

• Once submitted, GSTR-4 cannot be revised — so double-check everything before clicking submit

• Late fee for GSTR-4: ₹50 per day (₹25 CGST + ₹25 SGST), capped at ₹2,000 per return

• As per a 2025 advisory, returns more than 3 years overdue cannot be filed at all which could lead to permanent cancellation of your GST registration

Step-by-Step Guide to GST Filling for Composition Taxpayers

Let's walk through the practical steps for completing your GST filling as a composition dealer. This applies to both CMP-08 and GSTR-4.

Filing CMP-08 (Step-by-Step)

Step 1: Log in to the GST Portal at gst.gov.in using your GSTIN and password.

Step 2: Go to Services → Returns → Returns Dashboard.

Step 3: Select the Financial Year and the relevant Quarter.

Step 4: Under "Statement for Payment of Self-Assessed Tax (CMP-08)," click Prepare Online.

Step 5: Enter your outward taxable supply value for the quarter. The portal auto-calculates your tax based on your applicable composition rate.

Step 6: Enter any inward supplies subject to reverse charge separately.

Step 7: Review the auto-calculated tax liability carefully.

Step 8: Click Preview, verify everything, then click File CMP-08.

Step 9: Authenticate using DSC (Digital Signature Certificate) for companies/LLPs, or EVC (Electronic Verification Code) for proprietorships and individuals.

Step 10: Make the tax payment via the generated challan through net banking, UPI, or NEFT.

Filing GSTR-4 (Annual Return)

Step 1: Ensure all four CMP-08 statements for the year are filed.

Step 2: Go to Services → Returns → Annual Return on the GST portal.

Step 3: Select GSTR-4 and the relevant Financial Year.

Step 4: The portal auto-populates your sales data from your CMP-08 filings. Review it carefully.

Step 5: Enter any additional details for inward supplies, reverse charge, and TDS/TCS credits.

Step 6: Verify the tax computation table — ensure what you've already paid via CMP-08 matches.

Step 7: Preview the return, confirm all details, and file GSTR-4 using DSC or EVC.

Step 8: Pay any remaining tax liability (difference between what's payable and what you already paid via CMP-08).

Key Rules Every Composition Taxpayer Must Follow

GST filling under the Composition Scheme comes with a specific set of rules. Breaking any of these can result in penalties or forced exit from the scheme.

Here are the non-negotiable rules:

• Issue Bills of Supply, NOT Tax Invoices—A composition taxpayer cannot charge GST from customers. Your bills must clearly state: "Composition Taxable Person — Not Eligible to Collect Tax."

• No Inter-State Sales—You cannot sell goods across state borders while under this scheme.

• No E-Commerce Selling—You cannot supply goods through operators like Amazon, Flipkart, or Meesho.

• Display "Composition Taxpayer"—The law mandates this phrase be displayed prominently at all your business premises.

• No Input Tax Credit—You cannot claim ITC on any purchases. The lower tax rate is the trade-off for giving up ITC.

• Pay Tax Even During Zero Sales—If you have no business in a quarter, you still need to file CMP-08 (as a nil statement).

• Multi-State Registrations Are Linked—If you're registered in multiple states under the same PAN, you must opt in or opt out of the scheme across all states together.

Benefits of the Composition Scheme

Why do lakhs of small businesses across India choose this route for their GST filling? The reasons are clear:

1. Fewer Returns to File Instead of 12+ monthly GSTR-1 and GSTR-3B filings per year, you only file 4 CMP-08s and 1 GSTR-4. That's a massive reduction in time and effort.

2. Very Low Tax Rates Paying just 1% on your total turnover (for traders) means more money stays in your business. This improves cash flow significantly.

3. Simple Calculation Tax is calculated on turnover, not profit. There's no complex reconciliation of input and output tax credit.

4. Less Professional Help Needed Because the process is simpler, many small business owners can handle GST filling themselves — or with minimal accountant support.

5. Reduced Audit Risk With fewer transactions to report and no ITC claims, composition taxpayers typically face fewer compliance scrutiny issues.

6. Time to Focus on Business Less time spent on tax paperwork means more time running your shop, restaurant, or service business.

Common Mistakes to Avoid While Filing

Even with a simplified system, mistakes happen. Here are the most common errors small businesses make in their GST filling under the Composition Scheme — and how to avoid them:

Mistake 1: Treating CMP-08 and GSTR-4 as the same thing They serve very different purposes. CMP-08 is your quarterly payment statement. GSTR-4 is your annual summary. Both are mandatory and must be filed separately.

Mistake 2: Missing the CMP-08 quarterly deadline Many small business owners forget that the deadline is the 18th of the month following each quarter. Mark these dates in your calendar right now.

Mistake 3: Not monitoring turnover throughout the year If your sales cross ₹1.5 crore (or ₹50 lakh for service providers), you must exit the scheme immediately. Waiting until year-end to check can result in penalties.

Mistake 4: Issuing tax invoices instead of bills of supply This is a serious compliance error. As a composition taxpayer, you must never charge GST to your customer or issue a regular tax invoice.

Mistake 5: Filing GSTR-4 before all CMP-08s are done The portal won't allow it, but some taxpayers waste time trying. Always complete all quarterly CMP-08 filings first.

Mistake 6: Attempting to sell interstate or through e-commerce Many small sellers don't realize that even a single inter-state order or a sale through an e-commerce platform disqualifies them from the scheme.

Mistake 7: Ignoring the return after exit from the scheme If you exit the Composition Scheme mid-year, you still need to file GSTR-4 for the period you were under the scheme and switch to regular monthly returns going forward.

When Must You Exit the Composition Scheme?

Exiting the scheme is sometimes compulsory, sometimes voluntary. Here's when you must leave:

• Your aggregate turnover crosses the prescribed limit during the current financial year (₹1.5 crore for goods, ₹50 lakh for services)

• You begin making inter-state supplies

• You start selling on e-commerce platforms

• You choose to supply goods restricted under the scheme (like ice cream or tobacco)

When exiting, you must file Form GST CMP-04 within 7 days of the event that triggered the exit. From that date, you must start following the regular GST return cycle GSTR-1 and GSTR-3B monthly.

You can also voluntarily exit the scheme by filing CMP-04 if you decide the regular system works better for you for instance, if you want to claim input tax credit.

Expert Tips to Stay Compliant

These practical tips come from the experience of tax professionals and small business owners who have successfully navigated GST filling under the Composition Scheme:

Tip 1: Maintain a Simple Sales Register Keep a daily or weekly record of all your sales. Even a basic notebook or a spreadsheet works. This makes quarterly CMP-08 filing a five-minute job instead of a stressful scramble.

Tip 2: Set Calendar Reminders for Due Dates The 18th of July, October, January, and April — plus 30th June for GSTR-4. Put all five dates in your phone right now.

Tip 3: Keep an Eye on Your Cumulative Turnover Don't wait for year-end to check if you've crossed the threshold. Check your running total every month to avoid surprise exits.

Tip 4: Never Mix Personal and Business Accounts Keep your business bank account separate. This makes it much easier to verify turnover figures during GST filling.

Tip 5: File Before the Last Date Not on It The GST portal often experiences traffic congestion on due dates. Filing even a few days early saves you from technical glitches and last-minute stress.

Tip 6: Use the GST Portal's Own Calculator The portal auto-calculates your tax once you enter turnover figures. Trust this system  it reduces arithmetic errors.

Tip 7: Consult a CA If You're Near the Threshold If your business is growing and your turnover is approaching ₹1.5 crore or ₹50 lakh, speak to a Chartered Accountant about whether switching to the regular scheme is beneficial for you especially if you make significant purchases and can benefit from ITC.

FAQ Section

1. What is the GST filling process for a composition taxpayer?

A composition taxpayer must file Form CMP-08 every quarter by the 18th of the following month. This is a self-assessed tax payment statement. At the end of the financial year, they must also file Form GSTR-4 (annual return) by 30th June. Monthly returns like GSTR-1 and GSTR-3B are not required.

2. What is the GST Composition Scheme turnover limit in 2025?

The current limits are: ₹1.5 crore for manufacturers and traders, ₹75 lakh for businesses in special category states (like most North-Eastern states and Himachal Pradesh), and ₹50 lakh for service providers or mixed suppliers under Section 10(2A).

3. Can I claim Input Tax Credit under the Composition Scheme?

No. Businesses registered under the Composition Scheme cannot claim Input Tax Credit (ITC) on their purchases. This is one of the key trade-offs for enjoying the lower flat tax rate.

4. What happens if I miss my CMP-08 due date?

A late fee of ₹200 per day (₹100 CGST + ₹100 SGST) is charged, subject to a maximum of ₹5,000. Additionally, if you fail to file for two consecutive quarters, your ability to generate e-way bills will be blocked, which can halt business operations.

5. Can I sell on Amazon or Flipkart under the Composition Scheme?

No. Businesses registered under the Composition Scheme cannot supply goods through e-commerce operators like Amazon, Flipkart, or any other online marketplace. Doing so requires you to exit the scheme immediately and register as a regular GST taxpayer.

6. Can a restaurant opt for the Composition Scheme?

Yes, restaurants that do not serve alcohol are eligible for the Composition Scheme. They pay GST at 5% of their turnover (2.5% CGST + 2.5% SGST). Restaurants that serve alcohol must register as regular GST taxpayers.

7. How do I opt into the Composition Scheme?

Existing regular taxpayers can opt in by filing Form GST CMP-02 on the GST portal before the start of the financial year (before March 31st). New registrants can select the composition option directly in Form GST REG-01 when applying for GST registration.

8. Can a service provider use the Composition Scheme?

Yes, under Section 10(2A) of the CGST Act, service providers (or businesses with a mix of goods and services) with annual turnover up to ₹50 lakh can opt into a special composition provision. They pay GST at 6% of their turnover (3% CGST + 3% SGST).

9. What is the due date for GSTR-4 in FY 2025–26?

The GSTR-4 due date for FY 2025–26 is 30th June 2026. This deadline was permanently extended by Notification No. 12/2024 to provide small businesses more time for accurate annual reconciliation. Previously, it was 30th April.

10. What happens if my turnover exceeds the composition limit mid-year?

You must exit the Composition Scheme immediately by filing Form GST CMP-04 within 7 days of crossing the threshold. From that date, you must transition to regular GST filling — including monthly GSTR-1 and GSTR-3B filings. You'll also become eligible to claim input tax credit going forward.

Conclusion

If you're a small business owner in India feeling overwhelmed by GST filing, the Composition Scheme might just be the relief you've been looking for.

To recap what we've covered in this guide:

• The GST Composition Scheme is designed for small businesses with annual turnover below ₹1.5 crore (goods) or ₹50 lakh (services).

• Instead of complex monthly returns, you only need to handle CMP-08 quarterly and GSTR-4 annually.

• Tax rates are simple and low — ranging from 1% to 6% on turnover.

• Key restrictions include: no inter-state selling, no e-commerce, no ITC claims, and mandatory bills of supply (not tax invoices).

• Always monitor your turnover throughout the year to stay within the limits.

• File before deadlines, not on them — penalties and e-way bill blocks are real consequences of late GST filling.

The composition route won't suit everyone. If your business involves significant purchases where ITC would save you money, or if you sell across states, the regular GST system might be more beneficial in the long run.

But for lakhs of small traders, restaurateurs, and local service providers across India, the Composition Scheme remains one of the most practical and beginner-friendly approaches to GST filling available today.

Take action today: Check your previous year's aggregate turnover, visit gst.gov.in, and see if you qualify. If you're eligible, opting in before March 31st could simplify your entire year of tax compliance.

Have questions about GST filling or the Composition Scheme? Drop them in the comments below — we'd love to help!