Is 18% always correct?

No. Rates depend on the goods or service. The calculator applies the rate you select.

Does this file a return?

No. It is a browser math helper.

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GST amount in India

Indian GST is usually quoted exclusive or inclusive of tax. The calculator adds or strips the rate so invoices and marketplace listings match.

Exclusive vs inclusive

Exclusive: price × (1 + rate). Inclusive: price × rate / (1 + rate) is the tax component. Use 18% for many services, 5/12/28 for notified goods. Confirm the HSN/SAC rate — this page does not replace a CA.

Quick check

Open the GST Calculator, enter the base or the dirty price, pick the rate. Keep a note of whether shipping is in the taxable value for your category.

Steps

Know whether your figure already includes GST.
Open the GST Calculator and select the rate.
Copy taxable value and tax for the invoice line.

Frequently asked questions

Open the GST Calculator

The guide is the rule. The tool does the count. No account.

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