Calculate GST Amount, Final Price, CGST, SGST & IGST Online
A simple, rapid, and free Indian GST Calculator to add or remove GST from any amount. Useful for business owners, accountants, students, and buyers across India.
Inclusive or exclusive tax
Detailed tax breakup
5%, 12%, 18% and 28%
No registration required
Works fast on all devices
GST (Goods and Services Tax) is a single indirect tax levied on the supply of goods and services in India. Introduced on July 1, 2017, GST replaced multiple cascading indirect taxes such as Excise Duty, VAT, and Service Tax to create a unified tax structure under "One Nation, One Tax".
Using our free online GST calculator, you can calculate the exact GST amount instantly whether you are adding tax to a net price or extracting reverse GST from an inclusive total amount.
GST Amount = Original Amount × (GST Rate ÷ 100)
Final Amount = Original Amount + GST Amount
Original Amount = Total Amount × 100 ÷ (100 + GST Rate)
GST Amount = Total Amount - Original Amount
This online GST calculator is provided strictly for educational and informational purposes only. While every effort is made to ensure calculation accuracy based on standard mathematical formulas, government tax notifications and GST slab rates are subject to change. We do not guarantee absolute financial accuracy, and results should not be treated as official accounting or legal advice. Users are strongly advised to verify tax figures on official portals (cbic-gst.gov.in) or consult a Chartered Accountant (CA) before making commercial transactions.