✓ 100% Free · Instant · No signup · All GST slabs supported
GST Calculator
Calculate GST instantly for all slabs — add GST to amount or remove GST from inclusive price. Free, no signup.
➕ Add GST (Exclusive)
➖ Remove GST (Inclusive)
0%
5%
12%
18%
28%
Original Amount
₹0
GST Amount
₹0
Total Amount
₹0
Amount (excl. GST)₹0
CGST (6%)₹0
SGST (6%)₹0
Total GST₹0
Final Amount (incl. GST)₹0
GST Slabs in India
GST RateCommon Items
0%Milk, eggs, vegetables, fruits, salt, bread
5%Sugar, tea, coffee, edible oil, medicines, railway tickets
12%Butter, cheese, packed fruits, mobile phones, computers
18%Hair oil, soap, toothpaste, capital goods, most services
28%AC, cars, cement, paint, tobacco products, luxury items
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How It Works

1
Choose mode
Select Add GST (exclusive) to add GST to a price, or Remove GST (inclusive) to extract GST from a price.
2
Select GST slab
Choose the correct GST slab — 0%, 5%, 12%, 18% or 28%.
3
Enter amount
Type the amount in rupees.
4
See breakdown
GST amount, CGST, SGST and final price shows instantly.
🧾 GST Tip: When a price is shown as "inclusive of GST", use Remove GST mode to find the base price. When adding GST to your invoice price, use Add GST mode.

Frequently Asked Questions

❓ What are the 5 GST slabs in India?
0% on essential goods like milk, vegetables. 5% on packaged food, medicines. 12% on phones, computers. 18% on most services, soap, shampoo. 28% on luxury items like cars, AC, tobacco.
❓ What is CGST and SGST?
GST is split equally between Central GST (CGST) and State GST (SGST) for intra-state transactions. For example 18% GST = 9% CGST + 9% SGST.
❓ How to calculate GST amount?
GST Amount = Original Price × GST Rate ÷ 100. For example ₹1000 × 18 ÷ 100 = ₹180 GST. Final price = ₹1180.
❓ Is GST applicable on all goods?
No. Fresh vegetables, fruits, milk, eggs, bread and many essential items are exempt from GST (0% slab).
❓ How to reverse calculate GST from inclusive price?
Original Price = Inclusive Price ÷ (1 + GST Rate/100). Example: ₹1180 ÷ 1.18 = ₹1000 base price.

GST Calculator India 2025-26 — Free Online Tool

Our free GST calculator helps you instantly calculate Goods and Services Tax for any amount under all GST slabs — 0%, 5%, 12%, 18% and 28%. Whether you want to add GST to a base price or remove GST from an inclusive price, our calculator gives you the exact breakdown including CGST, SGST and IGST amounts in seconds.

GST was introduced in India on July 1, 2017 replacing multiple indirect taxes. Today every business owner, accountant, shopkeeper and consumer needs to calculate GST daily. Our free tool makes this calculation instant and error-free.

GST Slabs in India 2025-26

How to Calculate GST

Adding GST (Exclusive): GST Amount = Original Price × GST Rate ÷ 100. Final Price = Original Price + GST Amount. Example: ₹1000 + 18% GST = ₹1000 + ₹180 = ₹1180

Removing GST (Inclusive): Original Price = Inclusive Price ÷ (1 + GST Rate/100). Example: ₹1180 ÷ 1.18 = ₹1000 base price, ₹180 GST

CGST vs SGST vs IGST

For intra-state transactions (within same state), GST is split equally into CGST (Central GST) and SGST (State GST). For example 18% GST = 9% CGST + 9% SGST. For inter-state transactions, IGST (Integrated GST) equal to the full GST rate is charged instead.

Who Needs a GST Calculator?

Frequently Asked Questions

Is GST applicable on all goods and services?
No. Fresh vegetables, fruits, milk, eggs, bread and many essential items are exempt from GST (0% slab). However most manufactured goods and services attract GST between 5% and 28%.
What is the GST rate on restaurants?
Regular restaurants charge 5% GST without input tax credit. Air-conditioned restaurants and those in hotels with room tariff above ₹7500 charge 18% GST.
How to calculate GST from a total amount?
Use Remove GST mode in our calculator. Enter the total amount including GST and select the GST rate. The calculator will show the base price and exact GST amount separately.
Is this GST calculator free?
Yes, 100% free. No signup, no login, no payment. Calculate GST unlimited times for any amount and any slab.