GST Calculator
Add or remove GST from any amount instantly. Supports all Indian GST slabs — 5%, 12%, 18%, and 28%
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Understanding GST in India
GST (Goods and Services Tax) is India's unified indirect tax system that replaced multiple taxes like VAT, service tax, and excise duty when it was introduced on July 1, 2017. It follows a dual structure — CGST (Central GST) collected by the central government and SGST (State GST) collected by the state government. For interstate transactions, IGST (Integrated GST) applies.
GST Slabs and What They Cover
0%
Exempt
Essential items: fresh vegetables, milk, eggs, curd, textbooks, public transport
5%
Low Rate
Basic necessities: packaged food, life-saving medicines, economy hotel rooms
12%
Standard Rate
Computers, mobile phones, processed foods, business hotels
18%
Standard Rate
Most common rate — restaurants, IT services, FMCG products
28%
Luxury Rate
Luxury cars, tobacco, aerated drinks, casinos, high-end hotels
How This GST Calculator Works
1
Add GST: When you know the base price and want to find the final selling price. Formula: Total = Base × (1 + GST%/100)
2
Remove GST: When you have the GST-inclusive price and want to find the original base price. Formula: Base = Total / (1 + GST%/100)
3
CGST & SGST Split: The total GST is split 50-50 between CGST and SGST for intra-state transactions. So 18% GST = 9% CGST + 9% SGST.
Frequently Asked Questions
Any business with annual turnover above ₹40 lakh (₹20 lakh for services, ₹10 lakh for special category states) must register for GST. E-commerce sellers are required to register regardless of turnover.
CGST and SGST apply on intra-state (within same state) transactions and are collected by the central and state governments respectively. IGST applies on inter-state (between different states) transactions and is collected by the central government, which later distributes the state's share.
Yes, registered GST taxpayers can claim Input Tax Credit (ITC) — meaning the GST you pay on purchases can be offset against the GST you collect from customers. This prevents the cascading effect of tax-on-tax.
It depends on your registration type. Regular taxpayers file GSTR-1 (monthly/quarterly), GSTR-3B (monthly), and GSTR-9 (annual). Composition scheme dealers file quarterly. Filing can be done on the GST portal at gstn.gov.in.