GST Calculator Online – Calculate GST, CGST, SGST & IGST Free | Arya Tech City

GST Calculator

Calculate GST amount, CGST, SGST, IGST, taxable amount and total amount instantly.

Enter Amount (Taxable Amount)

₹

Enter amount in Indian Rupees. Commas are optional.

Please enter a valid amount.

GST Rate 0% 0.25% 3% 5% 12% 18% 28% Custom Rate

Custom GST Rate (%)

GST rate cannot be negative.

GST Type

CGST + SGST IGST

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GST Calculation Result

Total Amount ₹0.00

Calculation History

Frequently Asked Questions

GST (Goods and Services Tax) is a single, unified indirect tax charged in India on the supply of most goods and services, replacing many earlier taxes like VAT, service tax and excise duty.

GST is calculated by multiplying the taxable (base) amount by the applicable GST rate. For example, on ₹10,000 at 18% GST, the GST amount is ₹1,800, making the total ₹11,800.

CGST (Central GST) is the portion of GST collected by the Central Government on transactions within the same state. It usually equals half of the total GST rate.

SGST (State GST) is the portion of GST collected by the State Government on transactions within the same state. It is charged alongside CGST, each usually being half the total GST rate.

IGST (Integrated GST) is charged on transactions between two different states or on imports. Instead of splitting into CGST and SGST, the full GST amount is collected as IGST by the Central Government and later apportioned.

Switch to the "GST Inclusive (Remove GST)" tab, enter the final price that already includes GST, and the calculator will work out the original taxable amount and the GST portion automatically.

This is the same as reverse GST calculation. Use the GST Inclusive tab: Taxable Amount equals Inclusive Amount multiplied by 100, divided by (100 + GST Rate). The calculator does this instantly for you.

The common GST slabs in India are 0%, 0.25%, 3%, 5%, 12%, 18% and 28%, depending on the type of goods or services. This calculator supports all of these plus a custom rate.

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How to Calculate GST Online

Our GST Calculator helps individuals, shop owners, freelancers and accountants work out Goods and Services Tax in seconds, without needing a manual formula or spreadsheet. Simply choose whether your amount already includes GST or not, pick a GST rate, and get an instant, accurate breakdown of the taxable amount, CGST, SGST, IGST and total amount.

GST Exclusive Calculation (Add GST to Amount)

When you have the base price of a product or service and want to know the final price after tax, use GST Exclusive mode. The formula is: GST Amount = Taxable Amount × GST Rate ÷ 100, and Total Amount = Taxable Amount + GST Amount. For example, on a taxable amount of ₹10,000 at 18% GST, the GST works out to ₹1,800, making the total payable ₹11,800.

GST Inclusive Calculation (Remove GST / Reverse GST)

If you already have a final price that includes GST and want to find the original taxable amount, use GST Inclusive mode — this also works as a reverse GST calculator. The formula is: Taxable Amount = Inclusive Amount × 100 ÷ (100 + GST Rate). For example, ₹11,800 at 18% GST breaks down into a taxable amount of ₹10,000 and GST of ₹1,800.

CGST, SGST and IGST Explained

For sales within the same state, GST is split equally into CGST (Central GST) and SGST (State GST) — each being exactly half of the total GST rate. For sales between different states or on imports, the full amount is charged as IGST (Integrated GST) instead. This calculator automatically switches between the two based on the GST type you select.

Common GST Rate Slabs in India

The most commonly used GST rates in India are 0%, 0.25%, 3%, 5%, 12%, 18% and 28%, applied depending on the category of goods or services. This free GST calculator supports every official slab plus a custom GST rate for special cases.