GST Calculator

Our GST Calculator helps you calculate Goods and Services Tax (GST) for India. Whether you need to add GST to an amount or extract GST from a total, this calculator handles both scenarios with ease.

What is GST?

GST (Goods and Services Tax) is an indirect tax levied on the supply of goods and services in India. It replaced multiple cascading taxes like VAT, excise duty, and service tax. GST is a destination-based tax collected at each stage of the supply chain.

GST Components

CGST (Central GST): Tax collected by the Central Government
SGST (State GST): Tax collected by the State Government
IGST (Integrated GST): Tax on inter-state transactions

For intra-state transactions, CGST and SGST are applied (each is half of the total GST rate). For inter-state transactions, IGST is applied (equal to the full GST rate).

GST Rates in India

0% (Nil Rated): Essential items like fresh fruits, vegetables, milk, bread, newspapers
0.25%: Rough precious and semi-precious stones
3%: Gold, silver, and precious stones
5%: Household necessities like sugar, tea, coffee, edible oils, coal
12%: Processed food, computers, mobile phones (below ₹25,000)
18%: Most goods and services including IT services, restaurants, hotels
28%: Luxury items like cars, motorcycles, tobacco, aerated drinks

How to Use

GST Exclusive (Add GST):

Select "GST Exclusive" tab
Enter the base amount (before GST)
Select the GST rate
Click Calculate to see the total with GST

GST Inclusive (Remove GST):

Select "GST Inclusive" tab
Enter the total amount (including GST)
Select the GST rate
Click Calculate to see the base amount and GST

Formulas

To Add GST (Exclusive):

GST Amount = (Original Amount × GST Rate) ÷ 100
Total Amount = Original Amount + GST Amount

To Remove GST (Inclusive):

Original Amount = Total Amount ÷ (1 + GST Rate ÷ 100)
GST Amount = Total Amount - Original Amount

Examples

Add 18% GST to ₹1000: GST = ₹180, Total = ₹1180
Remove 18% GST from ₹1180: Base = ₹1000, GST = ₹180
Add 5% GST to ₹500: GST = ₹25, Total = ₹525
Remove 28% GST from ₹1280: Base = ₹1000, GST = ₹280

Common Use Cases

Invoicing: Calculate GST for customer invoices
Pricing: Determine selling price with GST
Accounting: Separate GST from total amounts
Tax Filing: Calculate GST liability
E-commerce: Display prices with and without GST

GST Registration

Businesses with annual turnover exceeding ₹40 lakhs (₹20 lakhs for special category states) must register for GST. E-commerce operators and inter-state suppliers must register regardless of turnover.

Input Tax Credit (ITC)

Businesses can claim Input Tax Credit for GST paid on purchases, which can be used to offset GST liability on sales. This prevents cascading of taxes and ensures tax is only paid on value addition.

GST Returns

Regular taxpayers must file monthly returns (GSTR-1 and GSTR-3B) and annual returns (GSTR-9). Composition scheme taxpayers file quarterly returns.

Tips for Businesses

Always mention GST separately on invoices
Keep proper records of all transactions
File returns on time to avoid penalties
Claim Input Tax Credit promptly
Use GST-compliant billing software
Verify GSTIN of suppliers

Reverse Charge Mechanism

In certain cases, the recipient of goods or services is liable to pay GST instead of the supplier. This applies to imports, unregistered suppliers, and specific notified services.