GST Calculator

The GST Calculator helps business owners, accountants, and shoppers quickly compute tax amounts for any transaction. Select your calculation mode first. Choose Exclusive (Add GST) if you know the base price before tax and need to find the final price the customer pays — this is the standard mode for raising invoices. Choose Inclusive (Remove GST) if you have the final MRP or sale price and need to extract the base price and tax component separately — useful for accounting and input tax credit claims. Enter the amount in the input field, then choose the applicable GST rate: 5%, 12%, 18%, or 28%. These four slabs cover all standard GST categories — 5% for essentials such as food and medicine, 12% for processed foods and standard goods, 18% for most goods and services including IT and telecom, and 28% for luxury items and automobiles. The calculator instantly shows the GST amount, the base price, and the final amount payable. For intra-state transactions, GST is split equally between CGST (Central GST) and SGST (State GST); each is half the total rate. Switch to the inter-state toggle to display the full IGST amount instead, which applies when goods or services cross a state border. This tool is ideal for raising invoices, verifying supplier bills, and quickly checking the tax component of any purchase. All calculations run entirely in your browser.