Tax Guide

GST Calculator Guide — GST Rates, Rules & How to Calculate 2026

📅 March 2026⏱ 7 min read

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What is GST?

GST (Goods and Services Tax) replaced VAT, excise duty and service tax in India from 1 July 2017. It is a destination-based, multi-stage tax levied on supply of goods and services across India.

GST Rate Slabs 2026

SlabCategoryExamples
0%Essential goodsFresh vegetables, milk, eggs, books
5%Basic necessitiesPackaged food, footwear under Rs.1000
12%Standard goodsComputers, medicines, processed food
18%Most goods/servicesAC, electronics, telecom, restaurants
28%Luxury/sin goodsCars, tobacco, aerated drinks

CGST vs SGST vs IGST

  • Intra-state sale (same state): GST split equally = CGST (to centre) + SGST (to state)
  • Inter-state sale (different states): Full IGST charged, collected by centre
Add GST: Final Price = Original × (1 + GST%/100)
Remove GST: Original = Inclusive Price × 100 ÷ (100 + GST%)
Example: Rs.10,000 + 18% GST = Rs.11,800

GST on Services 2026

  • Banking/finance services: 18%
  • IT services / software: 18%
  • Restaurant (AC): 5% (no ITC)
  • Restaurant (Non-AC): 5%
  • Hotel rooms above Rs.7500: 18%
  • Air tickets (economy): 5%, Business: 12%
  • Insurance premium: 18%

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