Looking for a quick way to decide between the GST Composition Scheme and the Regular GST Scheme? Our GST Composition or Regular Calculator helps you compare both options instantly. Just enter your estimated sales and margins, and the tool will show which scheme saves you more tax and increases your profit.
Enter your Data
Enter your estimated GST product rate-wise sales and estimated margin % on Sales.
| Particulars | GST Rate (Fixed) | Margin % on Sales (Incl GST) | Sales (Incl GST) |
|---|---|---|---|
| Estimated Sales | 5% | ||
| Estimated Sales | 18% | ||
| Total Sales (Incl GST) | ₹0 |
Calculator Result
| Particulars | Regular Option Values include GST | Composition Option Values include GST |
|---|---|---|
| Sales (Incl GST) | ₹0 | ₹0 |
| COGS (Incl GST) | ₹0 | ₹0 |
| Net GST Payment | ₹0 | ₹0 |
| Net Profit | ₹0 | ₹0 |
| Net Profit % | 0.00% | 0.00% |
| Final Result | ||
Assumptions
- Regular scheme assumes inputs are taxed at the same GST rate as outputs and 100% ITC on COGS is available.
- Composition scheme assumes 1% of sales including GST, with no ITC.
- Composition turnover cap is ₹1.5 crore.
- If Net GST (Regular) is negative, it is treated as ₹0 payable (ITC surplus).
What GST Composition or Regular Calculator does?
This GST Composition or Regular Calculator is designed to help small businesses and traders compare whether they should opt for the Composition Scheme or remain under the Regular GST Scheme. By entering your estimated sales and expected profit margins for products taxed at 5% and 18% GST, the calculator instantly shows the difference in net GST payable, profit, and profit percentage under both options.
How to use this calculator?
Enter your estimated sales including GST for products falling under the 5% and 18% GST slabs.
Enter your margin percentage on sales including GST for each slab.
Click Calculate.
The calculator will display:
Sales and cost of goods (COGS)
Net GST payable under Regular and Composition scheme
Net profit and profit percentage for both options
A clear comparison showing which scheme is more beneficial, along with the exact savings.
You can also use the Clear button to reset the inputs and try fresh calculations.
Assumptions used in the calculator
Under the Regular Scheme, it is assumed that all purchases are taxed at the same GST rate as sales, and full Input Tax Credit (ITC) is available.
Under the Composition Scheme, GST is calculated at 1% of total turnover including GST, and no ITC is available.
If the net GST payable under the Regular Scheme is negative, it is considered as ₹0 payable (surplus ITC carried forward).
The turnover limit of ₹1.5 crore under the Composition Scheme is taken into account.
Basis of calculation
Profit = (Sales including GST × Margin %)
COGS = (Sales including GST – Profit)
Regular Scheme Net GST = Output GST – Input GST (with ITC benefit)
Composition Scheme Net GST = 1% of Sales including GST
Net Profit = Profit – Net GST Payable
The calculator then compares net profits under both schemes and highlights which option leads to higher savings.
Why this GST Composition or Regular Calculator is important?
Choosing between Composition or Regular GST can directly impact your profitability. Many small businesses pay more tax than required because they do not evaluate both options. With this calculator, you can make an informed decision about which GST option will help you maximize profits and improve cash flow.
FAQs – GST Composition or Regular Calculator
1. Can I add more GST slabs in this calculator?
No. The calculator has been designed with two slabs – 5% and 18% – which cover the majority of products. It gives you a quick comparison without overcomplicating the input.
2. Why does the calculator take sales including GST instead of excluding GST?
Because most small businesses track and plan their turnover including GST. This approach makes it easier to work with real figures without doing manual adjustments.
3. How is the margin % applied in the calculator?
The margin you enter is on sales including GST. The calculator automatically derives profit and cost of goods sold (COGS) on this basis.
4. Does the calculator guarantee the same savings in real life?
Not exactly. The tool gives you a broad estimate based on standard assumptions (full ITC available, composition at 1%, same rate on inputs as outputs). Actual results may vary depending on your business model, type of inputs, exemptions, or GST law changes.
Disclaimer
This calculator is provided for educational and illustrative purposes only. The results are based on certain assumptions which may vary from case to case and may not fully reflect your actual GST liability. Please consult your Chartered Accountant or tax advisor before making any business or compliance decisions.
Also Read
Also read our blog post relating to Which is Better – Composition or Regular in GST and How to Choose.