Calculate GST-inclusive or exclusive prices instantly with our professional GST calculator
Learn the formulas used to calculate GST amounts and totals
GST Amount = Base Price × (GST Rate / 100)
Total Price = Base Price + GST Amount
Example: ₹1,000 × (18/100) = ₹180 GST
Total = ₹1,000 + ₹180 = ₹1,180
Base Price = Total Price / (1 + (GST Rate / 100))
GST Amount = Total Price - Base Price
Example: ₹1,180 / (1 + 0.18) = ₹1,000 Base
GST = ₹1,180 - ₹1,000 = ₹180
Common questions about GST calculations and regulations
GST (Goods and Services Tax) is a comprehensive indirect tax levied on the supply of goods and services in India, replacing multiple indirect taxes like VAT and service tax.
To use a GST calculator, simply enter the original amount, choose whether GST is to be added or removed, select the applicable GST rate (5%, 12%, 18%, or 28%), and click "Calculate" to see the result instantly.
The types of GST are:
GST is charged at:
GST benefits include:
GST is mandatory for businesses with annual turnover above ₹40 lakhs (₹20 lakhs for special category states). Small businesses below this threshold can opt in voluntarily to claim input tax credit benefits.
You can apply for GSTIN (GST Identification Number) online through the GST Portal by: