Free Calculator

GST Calculator India

Add or remove GST instantly. Get CGST + SGST (intra-state) or IGST (inter-state) split. All slabs — 5%, 12%, 18%, 28%.

Instant calculation Add & Remove GST CGST + SGST / IGST All GST slabs 100% Free
GST Calculator
Calculation Mode
Enter amount excluding GST — we'll calculate how much GST to add.
Transaction Type
₹
GST Rate
Custom rate: %

Enter an amount and select a GST rate
to see the breakdown here.

GST Rate Quick Reference
Essential food items — packed or branded (beyond basic unprocessed)
Transport services — railways (non-AC), economy airline tickets
Small restaurants (turnover below ₹75 lakh, composition scheme)
Life-saving drugs, vaccines, medicines (select)
Fertilisers, agri equipment
Textile fabrics (cotton, yarn)
Processed food — frozen meat, butter, cheese, ghee, pickle
Mobile phones and accessories
Business class airline tickets
Ayurvedic medicines, medical devices (non-critical)
Notebooks, exercise books, printed books
Construction services (affordable housing)
Most services — IT services, software, professional services
Restaurants (AC, hotel-attached, or above ₹75L turnover)
Consumer electronics — computers, cameras, monitors
Financial services (banking, insurance, broking)
Telecom services, internet services
Paints, varnishes, construction materials
Capital goods, industrial machinery
Luxury cars, motorcycles above 350cc
Air conditioners, washing machines, refrigerators
Tobacco products, pan masala, cigarettes (+ cess)
Aerated drinks, carbonated beverages
Cement, paints (premium)
Casinos, horse racing, online gaming (plus cess)
Fresh fruits, vegetables, milk, eggs, meat, fish (unprocessed)
Healthcare services — hospitals, diagnostic labs, ambulances
Education services — schools, colleges, coaching (upto board level)
Exports of goods and services (Zero-rated)
Agricultural produce (raw, unbranded)
Petrol, diesel, alcohol — outside GST (state levies apply)
GST Formulas
Add GST (GST Amount) Amount × Rate%
Add GST (Total) Amount × (1 + Rate%)
Remove GST (Base) Total ÷ (1 + Rate%)
Remove GST (GST Amount) Total − Base
CGST = SGST GST Amount ÷ 2
IGST Full GST Amount
Frequently Asked Questions
How do I calculate GST on a price?
To add GST: GST Amount = Base Price × GST Rate ÷ 100. Total = Base Price + GST Amount. To remove GST from an inclusive price: Base Price = Inclusive Price ÷ (1 + GST Rate÷100). Example: Remove 18% GST from ₹1,180 → ₹1,180 ÷ 1.18 = ₹1,000 base price.
What is the difference between CGST, SGST and IGST?
For intra-state transactions (within the same state), GST is split equally into CGST (Central GST) and SGST (State GST). For inter-state transactions (across states), IGST (Integrated GST) applies at the full rate. Example: 18% GST intra-state = 9% CGST + 9% SGST. Inter-state = 18% IGST.
What are the GST tax slabs in India?
GST has four main tax slabs: 5% (essential goods, transport), 12% (processed foods, business class air travel), 18% (most services, electronics, restaurants), and 28% (luxury goods, automobiles, aerated drinks). Some items like fresh food and healthcare are exempt (0%).
Can I claim Input Tax Credit (ITC) on GST paid?
Yes, GST registered businesses can claim ITC on GST paid for purchases used in business. ITC can be used to offset your GST liability. ITC is available only if the supplier has filed their GSTR-1 and the invoice appears in your GSTR-2B.
What is the GST registration threshold?
Businesses with annual turnover above ₹40 lakh (goods) or ₹20 lakh (services) must register for GST. For special category states (North-East, Uttarakhand etc.), the threshold is ₹20 lakh (goods) and ₹10 lakh (services).
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