GST Calculator

Quickly add or remove GST from any amount with a clear breakdown of CGST and SGST.

Add GST

Initial Amount (₹)

GST Rate (%)

Base Amount:₹0.00

CGST:₹0.00

SGST/UTGST:₹0.00

Total Amount:₹0.00

Remove GST

GST Inclusive Amount (₹)

GST Rate (%)

Base Amount:₹0.00

CGST:₹0.00

SGST/UTGST:₹0.00

Total GST:₹0.00

GST Calculator – Your Complete Guide to India’s Goods and Services Tax

The Goods and Services Tax (GST) has changed the way India handles indirect taxation. Introduced in July 2017, GST merged multiple state and central taxes into one unified system, making compliance easier for businesses and transparency clearer for consumers. Whether you’re a business owner preparing invoices or a consumer trying to understand the true price of a product, our GST calculator online helps you get accurate results in seconds.

How Our GST Calculator Works

Our free tool has two main functions: adding GST to a base amount and removing GST from a final price. Both are essential for different use cases.

1. Add GST (for invoicing or pre-purchase pricing)

Enter the base amount: Input the price before GST is applied.
Select the GST rate: Choose from common slabs like 5%, 12%, 18%, 28% or set a custom percentage.
Get instant results: The calculator will display the GST amount, split into CGST and SGST, along with the final price including tax.

2. Remove GST (for finding the original price)

Enter the GST-inclusive amount: Input the final price you paid or see on the invoice.
Pick the applicable GST rate: For example, 5% for basic goods or 18% for services.
Check the breakdown: Instantly view the base amount (pre-tax value), the GST charged, and its division into CGST and SGST.

Understanding the GST System in India

GST replaced a web of indirect taxes like VAT, service tax, and excise duty with a “One Nation, One Tax” framework. It is structured on three main components:

CGST: Central Goods and Services Tax, collected by the central government on intra-state sales.
SGST: State Goods and Services Tax, collected by the state government on intra-state sales.
IGST: Integrated Goods and Services Tax, levied on inter-state transactions and imports, collected by the central government.

For any sale within a state, the tax is split 50/50 between CGST and SGST. Our CGST SGST calculator does this division automatically.

Current GST Slabs in India

0%: Essential goods and services like milk, fresh vegetables, and basic healthcare.
5%: Daily-use items such as tea, coffee, sugar, footwear under ₹1000.
12%: Items like processed food, mobile phones, computers, and some restaurant services.
18%: The most widely used rate for electronics, software, professional services, and financial services.
28%: Applied to luxury items and “sin goods” like tobacco, cars, and air conditioners.

GST Calculation Formulas

To Add GST:

GST Amount = Base Price × (GST Rate ÷ 100)
Total Price = Base Price + GST Amount

To Remove GST:

Base Price = GST Inclusive Price ÷ (1 + GST Rate ÷ 100)
GST Amount = GST Inclusive Price – Base Price

Our GST amount calculator uses these exact formulas to deliver fast and accurate results.

Extra Features of GST You Should Know

Input Tax Credit (ITC)

Businesses can claim credit for the GST paid on inputs (raw materials, services) when paying GST on their outputs. This ensures tax is levied only on the added value, not the entire chain of production.

Composition Scheme

Small businesses with turnover under ₹1.5 crore can opt for this simplified scheme. Instead of filing regular GST returns, they pay a fixed percentage of turnover as tax. However, they cannot claim ITC.

Frequently Asked Questions

Is this GST calculator free?

Yes, our online GST calculator is 100% free with no hidden fees.

Can consumers and businesses both use this tool?

Absolutely. Consumers can check pre-tax values, while businesses can create accurate invoices.

What GST rate applies to my product?

Rates are decided by the GST Council based on the product’s HSN code or service SAC code. The most common slab is 18%.

Will the calculator show CGST and SGST separately?

Yes, every calculation automatically splits the GST into CGST and SGST for intra-state transactions.

Conclusion

GST is part of every transaction in India, and calculating it manually can be confusing. Our GST calculator makes it simple by handling both “add GST” and “remove GST” functions with detailed breakdowns. Bookmark this page to quickly and accurately calculate GST for personal shopping, business invoices, or tax filing.