Add GST to a base price to get the final billed amount, or remove GST from a total (GST-inclusive) amount to find the original base price — supports 5%, 12%, 18% and 28% slabs used in India.
5%, 12%, 18% and 28% — the standard slabs used for most goods and services in India.
'Add GST' takes a base price and adds tax on top. 'Remove GST' takes a final price that already includes GST and extracts the base amount.