GST Calculator India | Add or Remove 5%, 12%, 18%, 28% GST | Tools Calculator

Free GST calculator India. Add or remove GST at 5%, 12%, 18%, 28% rates. Calculate CGST, SGST & IGST price breakdown instantly.

GST Slab Rates in India 2026

  • 0% GST: Unpackaged grains, fresh milk, vegetables, eggs, curd, bread
  • 5% GST: Packaged food items, domestic LPG, generic medicines, transport services
  • 12% GST: Processed foods, computers, mobiles, business class air tickets
  • 18% GST: Standard rate — IT software, electronics, telecom, hotel stays
  • 28% GST: Luxury items, automobiles, air conditioners, cement, gaming

GST Formulas (Inclusive & Exclusive)

  • Add GST (Exclusive): GST Amount = (Base Price × GST Rate) ÷ 100 | Total = Base + GST
  • Remove GST (Inclusive): Base Price = Total Price ÷ (1 + GST Rate / 100) | GST = Total – Base
  • Intra-State: Split 50% CGST + 50% SGST | Inter-State: 100% IGST

Related GST & Billing Tools

Frequently Asked Questions

How to calculate 18% GST on ₹10,000?
GST Amount = ₹10,000 × 18% = ₹1,800. Total invoice price = ₹11,800. CGST is ₹900 (9%) and SGST is ₹900 (9%).
How to find HSN codes for GST filing?
Use our HSN Code Finder to search by product or service keyword to identify the exact 4, 6, or 8-digit HSN code with current tax slab rates.