What is the difference between CGST, SGST, and IGST?

CGST (Central GST) and SGST (State GST) are levied on Intra-State supplies (transactions within the same state), splitting the total GST rate equally between Central and State governments. IGST (Integrated GST) is levied on Inter-State supplies (transactions between two different states) and is collected by the Central Government.

How do I calculate GST (Add GST)?

To add GST to a base amount, multiply the base amount by the GST rate percentage: GST Amount = Base Amount × (GST Rate / 100). The total price is Base Amount + GST Amount.

How do I remove GST from a total price (GST Inclusive)?

To remove GST from a tax-inclusive total price, calculate the original base amount as: Base Amount = Total Amount × 100 / (100 + GST Rate). The tax amount is then Total Amount - Base Amount.

What are the standard GST rate slabs in India?

In India, GST rates are categorized into four primary slabs: 5% (essential goods/services), 12% (standard items), 18% (most services and manufactured goods), and 28% (luxury items and demerit goods).

GST Calculator

Calculate Goods & Services Tax with separate CGST, SGST, and IGST breakdowns. Add or remove tax instantly with currency toggles.

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Intra-State (same state): split equally into Central (CGST) and State (SGST). Inter-State (between states): Integrated GST (IGST).

Amount

GST Rate (%)

Calculation Mode

Frequently Asked Questions (FAQ)

CGST (Central GST) and SGST (State GST) are applied when buyer and seller are located in the same state (Intra-State supply). The tax amount is shared 50:50 between the Central and State governments.

IGST (Integrated GST) is levied when goods or services are supplied from one state to another (Inter-State supply) or imported into India. The total tax is collected by the Central Government and subsequently allocated.

When adding GST (tax-exclusive price):

GST Amount = Base Price × (GST Rate / 100)

Total Price = Base Price + GST Amount

For example, on ₹10,000 at 18% GST: Tax is ₹1,800 (CGST ₹900 + SGST ₹900) and Total Payable is ₹11,800.

When extracting base price from a tax-inclusive total:

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

GST Amount = Total Price - Base Amount

For example, if Total Amount is ₹11,800 at 18% GST: Base Amount is ₹10,000 and GST Amount is ₹1,800.

GST in India has 4 main tax rate slabs:

5%: Essential items, apparel under ₹1,000, basic foods, transport services.
12%: Processed foods, computers, smartphones, apparel above ₹1,000.
18%: Most IT services, financial services, telecom, industrial goods.
28%: Luxury goods, automobiles, tobacco, gaming, demerit products.

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Legal & Financial Disclaimer

This GST Calculator provides estimates for informational and planning purposes only. Actual tax liabilities may depend on specific HSN/SAC codes, exempt classifications, reverse charge mechanisms (RCM), and applicable input tax credit (ITC) rules under Goods and Services Tax laws. Please consult a qualified Chartered Accountant (CA) or financial tax advisor for official tax filings.

GST Calculator

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