GST Calculator —
Add or remove GST in one click.
Calculate GST for any amount across all tax slabs — 3%, 5%, 12%, 18%, 28%. Get CGST, SGST & IGST breakdown instantly. Perfect for businesses, freelancers, and accountants.
GST Calculator — Complete Guide for India
GST (Goods and Services Tax) is a unified indirect tax levied on the supply of goods and services across India, introduced on 1 July 2017. Our free online GST calculator lets you compute the exact tax amount for any transaction in seconds — whether you need to add GST to a price or extract GST from a GST-inclusive amount.
GST Rate Slabs in India
Nil Rate
Eggs, milk, fresh vegetables, education services, healthcare
Special Rate
Gold, silver, precious stones and jewellery
Essential Items
Packed food, footwear under ₹1000, transport, economy hotels
Standard Rate
Computers, processed food, medicines, mobile phones
Most Services
IT services, banking, insurance, restaurants, branded clothing
Luxury & Sin
Cars, tobacco, aerated drinks, cement, luxury hotels
GST Calculator — FAQs
How do I calculate GST on an amount?
To add GST: GST Amount = (Original Price × GST Rate) ÷ 100. Total Price = Original Price + GST Amount. Example: ₹1,000 + 18% GST = ₹1,180. To remove GST: Original Price = (Inclusive Price × 100) ÷ (100 + GST Rate).