GST stands for Goods and Services Tax. It's a value-added tax levied on most goods and services sold for domestic consumption. The tax is paid by consumers but remitted to the government by the businesses selling the goods and services.

GST exclusive means the price doesn't include GST, and it will be added to the base price. GST inclusive means the price already includes GST, and you can calculate how much of the price is the actual GST component.

Select the "GST Inclusive" option in the calculator. Enter the total amount that includes GST and the GST rate. The calculator will show you the base amount before GST and the actual GST amount.

Yes, many countries have different GST rates for different categories of goods and services. Some items may be exempt, while others may have reduced rates. Always check the specific rates that apply to your transaction.