GST Calculator

What is a GST Calculator?

A GST Calculator is a free online tool that helps businesses and consumers quickly calculate the Goods and Services Tax applicable on any transaction. Whether you need to add GST to a base price or extract GST from a GST-inclusive amount, this tool gives instant, accurate results.

GST (Goods and Services Tax) is a comprehensive indirect tax in India that replaced multiple cascading taxes. It is levied on the supply of goods and services and is collected at every stage of the supply chain.

How to Use This GST Calculator

  • Add GST: Enter the original price (excluding GST), select the applicable GST rate, and the calculator shows the GST amount and final price inclusive of GST.
  • Remove GST: Enter the GST-inclusive price, select the rate, and the calculator reverse-calculates the original base price and the GST component.

GST Calculation Formulas

Adding GST: GST Amount = Original Price × (GST% / 100)

Total Price = Original Price + GST Amount

Removing GST: Original Price = GST-Inclusive Price / (1 + GST%/100)

GST Amount = GST-Inclusive Price − Original Price

Frequently Asked Questions

What are the different GST rates in India?

India has five GST slabs: 0% (essential items), 5% (basic necessities), 12% (processed foods, clothing), 18% (most goods & services, electronics), and 28% (luxury goods, tobacco, automobiles).

What is CGST and SGST?

For intra-state transactions, GST is split equally between Central GST (CGST) and State GST (SGST). For inter-state transactions, Integrated GST (IGST) is charged. For example, 18% GST = 9% CGST + 9% SGST.

Who needs to register for GST?

Businesses with annual turnover exceeding 40 lakhs (20 lakhs for special category states) must register for GST. Service providers with turnover above 20 lakhs must also register.

GST Slabs in India

  • 0%Essential goods, raw food
  • 5%Household necessities
  • 12%Processed foods, clothing
  • 18%Electronics, services
  • 28%Luxury goods, vehicles