GST (Goods and Services Tax) is India's unified indirect tax, charged at 5%, 12%, 18% or 28% depending on the category of goods or services. This calculator either adds GST on top of a base amount (to find the final price a customer pays) or removes GST from a GST-inclusive amount (to find the original base price) โ both are common needs depending on whether you're pricing a product or reading an invoice.
For any GST amount, the total is split equally between CGST (Central GST) and SGST (State GST) when the transaction happens within one state โ each gets half the total GST rate. For inter-state transactions, the full amount is charged as IGST instead. This calculator shows the CGST/SGST split assuming an intra-state transaction, which is the most common case for small businesses and everyday purchases.
It depends on the category: most daily essentials are 5% or 12%, most standard goods and services fall under 18%, and luxury or sin goods (like cars, tobacco) are taxed at 28%. Check the official GST rate schedule if you're unsure about a specific product.
'Add GST' takes a base price and tells you the final price a customer pays. 'Remove GST' does the reverse โ if you have a GST-inclusive price (like an invoice total), it extracts the original base price and the tax portion.
This calculator is for quick estimates on individual amounts โ for actual GST return filing, you'll need your GSTIN, invoices, and the official GST portal or a qualified accountant.