Add or remove GST from any amount at 5%, 12%, 18% or 28%.
Goods and Services Tax (GST) is applied to most goods and services in India at rates of 5%, 12%, 18%, or 28%. Whether you are a business owner creating an invoice or a buyer checking a bill, this GST calculator gives you the exact tax amount in one step.
Use 'Add GST' to find the final price including tax from a base amount, or 'Remove GST' to find the original price hidden inside a tax-inclusive amount. The calculator also splits the tax into CGST and SGST components.
Divide the inclusive price by (1 + rate/100). For 18% GST, divide by 1.18 to get the base price.
For sales within a state, GST is split equally between Central GST (CGST) and State GST (SGST). For inter-state sales, the full amount is charged as IGST.
GST rates depend on the product or service category — essentials are at 5%, most services at 18%, and luxury or sin goods at 28%. Check the official GST rate list for your category.