GST Calculator India - CGST SGST IGST Rate Calculator Online
Free GST calculator for India 2026. Add or remove GST instantly with all slabs — 5%, 12%, 18%, 28%. Shows CGST, SGST and IGST split.
How to use this calculator
👉 Fill in the boxes below and your answer appears instantly — no maths needed, we do it all for you! 🎉
In plain English — what does this do?
💵 A money helper! It works out things like how much to save, how much you owe, or how much you’ll have in the future. Just fill in the boxes and you’ll get your answer.
A GST calculator helps businesses and consumers compute Goods and Services Tax on any transaction in India. It can add GST to a base (ex-GST) price to find the total payable, or strip GST out of an inclusive price to find the original base amount. It also splits the total GST into equal CGST and SGST components for intra-state transactions.
Total (with GST)
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Base Amount
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CGST
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SGST
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What is GST Calculator India - CGST SGST IGST Rate Calculator Online?
A GST calculator helps businesses and consumers compute Goods and Services Tax on any transaction in India. It can add GST to a base (ex-GST) price to find the total payable, or strip GST out of an inclusive price to find the original base amount. It also splits the total GST into equal CGST and SGST components for intra-state transactions.
How to use it
- 1️⃣ Choose the mode: 'Add GST' to calculate GST on top of a base price, or 'Remove GST' to find the base price from a GST-inclusive amount.
- 2️⃣ Enter the amount in the input field.
- 3️⃣ Select a GST slab — 5%, 12%, 18%, or 28% — or type a custom rate.
- 4️⃣ The result shows the final amount, base amount, and the CGST and SGST split instantly.
- 5️⃣ For interstate transactions, the total GST amount equals IGST (no CGST/SGST split applies).
Formula
💡 See it in action — a real example
❓ Common questions
- What are the main GST slabs in India?
- India uses four primary GST slabs: 5% (essential goods and services), 12% (standard goods), 18% (most services and manufactured goods), and 28% (luxury and demerit goods). Some items like fresh food are exempt (0%).
- What is the difference between CGST, SGST, and IGST?
- For intra-state sales, GST is split equally into CGST (Central GST) and SGST (State GST). For inter-state sales, the entire GST amount is collected as IGST (Integrated GST) by the central government.
- Who needs to register for GST?
- Businesses with annual turnover exceeding ₹40 lakh (₹20 lakh for service providers and special category states) must register for GST. Voluntary registration is also available for smaller businesses.
- Can I claim GST input tax credit?
- Yes, registered businesses can claim Input Tax Credit (ITC) for GST paid on purchases used for business, offsetting it against GST collected on sales. This prevents tax cascading.
- Is GST charged on exports?
- Exports are zero-rated under GST, meaning no GST is charged on exported goods or services. Exporters can claim a refund of GST paid on inputs used in production of exported goods.