Free Online GST Calculator
Calculate GST instantly with accurate CGST, SGST and IGST breakdown. Supports all slab rates, inclusive and exclusive calculations.
6 Slabs
GST Rates
100%
Free & Accurate
Instant
Results
GST Calculator
Exclusive: Add GST to amount
GST Calculation
Your GST breakdown will appear here
Enter an amount and select the GST rate to calculate
* This is an indicative calculation. Actual GST may vary based on specific HSN/SAC codes and government regulations.
How Does GST Calculation Work?
When you buy or sell goods and services in India, GST is applied using one of two methods. The method you choose depends on whether the listed price already includes tax or not. Getting this right matters for accurate invoicing, proper bookkeeping, and staying compliant with GST rules.
Exclusive Method
GST is added on top of the base price. Common in B2B transactions.
Inclusive Method
GST is already part of the total price. Common in retail/B2C sales.
Calculation Formulas
1. Adding GST (Exclusive Method)
This is the more common approach in business-to-business transactions. You start with the net price and add GST on top of it.
2. Extracting GST (Inclusive Method)
When MRP or retail prices already include GST, you need to work backwards to find the base amount and tax component.
Current GST Slab Rates (FY 2025-26)
| Rate | Category | Common Examples |
|---|---|---|
| 0% (Exempt) | Essential goods and services | Fresh fruits, vegetables, milk, eggs, bread, healthcare, education |
| 5% | Everyday necessities | Sugar, tea, edible oil, packaged food items, public transport |
| 12% | Standard rate items | Processed foods, computers, mobile phones, business class air tickets |
| 18% | Most goods and services | Electronics, steel, FMCG products, IT and financial services |
| 28% | Luxury and demerit goods | Premium cars, tobacco products, aerated beverages, cement |
| 40% | Special category items | Specific high-value luxury goods and demerit items |
Essential goods and services
Fresh fruits, vegetables, milk, eggs, bread, healthcare, education
Everyday necessities
Sugar, tea, edible oil, packaged food items, public transport
Standard rate items
Processed foods, computers, mobile phones, business class air tickets
Most goods and services
Electronics, steel, FMCG products, IT and financial services
Luxury and demerit goods
Premium cars, tobacco products, aerated beverages, cement
Special category items
Specific high-value luxury goods and demerit items
Understanding the Four Types of GST
CGST (Central GST)
Collected by the Central Government on intra-state sales. On an 18% GST sale, 9% goes as CGST.
SGST (State GST)
Collected by the State Government on intra-state sales. Ensures both centre and state share tax revenue.
IGST (Integrated GST)
Applied on inter-state sales. Collected by the Centre and then distributed to the destination state.
UTGST (Union Territory GST)
Similar to SGST but applied in Union Territories like Chandigarh, Lakshadweep, etc.
Do You Need GST Registration?
If your business crosses ₹40 lakh in annual turnover (₹20 lakh for services, and ₹10 lakh in special category states), GST registration becomes mandatory. It is also required for e-commerce sellers, inter-state traders, or those under reverse charge mechanism.
Frequently Asked Questions
What is GST and how is it calculated?
What is the difference between GST inclusive and exclusive?
What are the current GST slab rates in India?
What is the difference between CGST, SGST, and IGST?
Related Tools
Need Help with GST?
Our experts can handle your GST registration, return filing, and compliance so you can focus on growing your business.
By submitting, you agree to our Terms & Privacy Policy and Data & Consent Policy.
Why Taxcom Technologies?
Expert CA/CS
Verified professionals handling your filings.
100% Accurate
Guaranteed accuracy in all calculations.
Timely Filing
Never miss a deadline with our reminders.
Simplify Your GST Compliance
Join 10,000+ businesses who trust Taxcom Technologies for their GST registration and return filing.