GST Calculator

Divide by one plus the rate as a decimal, rather than subtracting the percentage. For an 18% rate, divide the inclusive price by 1.18. A price of 1,180 gives a base of 1,000 and GST of 180. Subtracting 18% instead would wrongly give 967.60, because the 18% would be taken from the larger, tax-inclusive figure.

The total GST is the same either way; only the split differs. For a supply within one state, it is divided equally between Central GST and State GST, so 18% becomes 9% CGST plus 9% SGST. For a supply between states, the whole amount is charged as Integrated GST and later apportioned between the centre and the destination state.

The main slabs are 5%, 12%, 18% and 28%. There is also a 0% category for exempt items such as most fresh food, and special rates of 0.25% for rough precious stones and 3% for gold and other precious metals. Some goods in the 28% band additionally attract a compensation cess, which this calculator does not include.

That depends on the HSN code for goods or the SAC code for services, and the rate can change when the GST Council revises it. Check the current notified rate for your specific code on the CBIC website rather than assuming, particularly for items that have moved between slabs.

No. Cess applies to a limited set of goods such as cars, tobacco and aerated drinks, is levied on top of GST, and varies by item. If your product attracts cess you will need to add it separately to the figures shown here.

No. The calculation runs entirely in your browser. Nothing you type is transmitted, stored or logged, and no account is needed.