GST Calculator India (2026)
Calculate Goods and Services Tax (GST) instantly with standard 5%, 12%, 18%, and 28% slabs. Includes Exclusive (Add GST), Inclusive (Remove GST), and CGST/SGST/IGST breakdown.
Tax Invoice Breakdown
Indian GST Slabs Reference Table (2026)
Overview of standard GST classifications applied across goods and services in India:
| Slab Rate | Classification | Common Included Goods & Services |
|---|---|---|
| 0% | 0% (Nil) | Fresh milk, grains, salt, vegetables |
| 5% | 5% (Essential) | Sugar, tea, edible oil, transport, medicines |
| 12% | 12% (Standard I) | Processed food, computers, business class air |
| 18% | 18% (Standard II) | Telecom, IT services, electronics, restaurants |
| 28% | 28% (Luxury/Sin) | Automobiles, tobacco, cement, luxury goods |
GST Calculator FAQs
Answers to common questions about Indian Goods and Services Tax calculation.
What is the difference between GST Exclusive and GST Inclusive?
GST Exclusive means GST is added on top of the net base amount (e.g., ₹1,000 + 18% = ₹1,180). GST Inclusive means the gross/MRP amount already includes the tax, and you need to reverse-calculate the pre-tax base amount (e.g., in ₹1,180 MRP, base is ₹1,000 and GST is ₹180).
When do I apply CGST + SGST versus IGST?
If the seller and buyer are in the same Indian state (Intra-state transaction), GST is split equally into Central GST (CGST) and State GST (SGST). If the buyer and seller are located in different states (Inter-state transaction), full Integrated GST (IGST) is charged.
What is the formula to remove GST from a total bill amount?
To remove GST: Base Amount = Total MRP ÷ (1 + GST Rate / 100). For example, for an 18% GST bill of ₹5,900: Base = 5,900 ÷ 1.18 = ₹5,000, and GST Amount = ₹900.
Does this GST calculator work offline?
Yes. All tax formulas run 100% in your browser using client-side JavaScript. It works completely offline and never uploads your invoice numbers or financials to any server.
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