GST calculator: add or remove GST

Enter an amount, pick the rate and see the GST, the CGST and SGST split or IGST, and the total, along with the same amount at every GST rate. Download it as Excel.

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All GST rates · CGST + SGST or IGST · Excel and CSV

How to use the GST Calculator

Enter the amountType the price of one item and, if needed, the quantity in the settings.
Add or remove GSTChoose Add GST for a price before tax, or Remove GST when the price already includes tax.
Pick the rate and the sale typeChoose 0%, 0.25%, 3%, 5%, 18%, 40% or another rate, and whether the sale is within your state or to another state.
Read and downloadSee the taxable value, CGST and SGST or IGST, the total in figures and words, and every slab side by side.

Why use this gst calculator

GST is charged on the taxable value of goods and services. For a sale within the same state, the tax is split equally between Central GST and State GST (or Union Territory GST). For a sale to another state, the whole amount is Integrated GST. The rate depends on the HSN or SAC code of what you sell.

From 22 September 2025 most items moved to two main rates, 5% and 18%, with a 40% rate for a short list of luxury and sin goods. Check the current rate for your item on the GST portal or with your accountant before you bill.

New GST ratesIncludes the 5%, 18% and 40% rates in force from 22 September 2025, plus the special rates.
Inclusive or exclusiveWorks out the GST inside an inclusive price, or adds it on top.
CGST, SGST and IGSTSplits tax correctly for sales within a state and between states.
Every slab at a glanceA table compares your amount at all the main rates.
Amount in wordsTotal in Indian words, in lakh and crore, ready for bills.

Questions people ask

How do I calculate GST on a price?

Multiply the price before tax by the rate. For example, 18% GST on ₹10,000 is ₹1,800, so the total is ₹11,800.

How do I remove GST from an inclusive price?

Divide the price by 1 plus the rate. For example, ₹11,800 including 18% GST is ₹11,800 ÷ 1.18 = ₹10,000 before tax, with ₹1,800 of GST.

When do I charge CGST and SGST instead of IGST?

CGST and SGST apply when the supplier and the place of supply are in the same state. IGST applies when they are in different states.

What are the GST rates now?

Since 22 September 2025 the main rates are 5% and 18%, with 40% for selected luxury and sin goods, and special rates such as 0%, 0.25% and 3% for some items.

Can I use a rate that is not listed?

Yes. Choose Other in the settings and type any rate, for example for an older invoice.

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From the H View blog

H View money tools work out every number in your browser, so nothing you type is sent to H View. They are estimates to help you plan, based on the rules described on this page as of October 2026, and are not tax, legal or financial advice. Check important decisions with a chartered accountant or your bank. Need a custom calculator or a GST billing system for your business? Talk to the H View team.