Taxpayers who want to calculate GST with the differential GST rate can use our tool. Mentioned below are steps to be followed for calculating GST through GST Calculation Tool: Find out how to calculate GST using our simple GST calculator to work out prices both including and excluding GST . Calculate GST amounts for various tax rates with this simple and fast tool. No ads, no signup, no distractions. Get results for CGST, SGST, IGST, interest, and reverse GST in seconds. Calculate GST online instantly with inclusive or exclusive tax options. Supports all GST rates (5%, 12%, 18%, 28%) and provides accurate results based on the inputs provided.