GST Calculator Online
Last Updated: 8 April 2026
GST Calculator (2025)
Calculate CGST, SGST & IGST in seconds
What is GST Calculation Explained?
Goods and Services Tax (GST) is an indirect tax used in India on the supply of goods and services. Our GST Calculator helps business owners, freelancers, and consumers calculate the specific tax amount based on the value of their goods and the applicable tax slab.
📊 Practical Example
"If you buy a laptop for ₹50,000 + 18% GST, your total bill will be ₹59,000 (Add GST). If a hotel room is quoted at ₹5,000 including 12% GST, the base price is ₹4,464.29 and the tax is ₹535.71 (Extract GST)."
⚠️ Common Mistake
Manually calculating 18% of the inclusive price to 'remove' it. This is wrong. You must divide by 1.18, not multiply by 0.18, or you will over-calculate the tax part.
How it Works & Benefits
Inclusive & Exclusive
Toggle between adding GST to a price or extracting it from an all-inclusive price.
Standard Slabs
Quick-select 5%, 12%, 18%, and 28% for faster data entry.
CGST/SGST Breakdown
See exactly how much tax goes to the Central and State governments.
Frequently Asked Questions
Common queries answered for you
The most common GST slabs are 5%, 12%, 18%, and 28%. Basic necessities usually fall under 5%, whereas luxury items can go up to 28%.
To remove GST from a price, use the formula: Original Cost = Total Price / (1 + GST Rate / 100). For example, if total is ₹118 and rate is 18%, Original = 118 / 1.18 = ₹100.
For intra-state transactions (within the same state), GST is split equally between CGST (Central) and SGST (State). For inter-state transactions, the full amount is called IGST (Integrated GST).