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GST Calculator

Calculate GST instantly for any amount. Supports all GST rates (5%, 12%, 18%, 28%) with CGST/SGST and IGST breakdowns. Inclusive and exclusive modes.

GST Breakdown

Base Amount₹10,000
CGST (9%)₹900
SGST (9%)₹900
Total GST₹1,800
Total Amount₹11,800

GST = ₹10,000 × 18% = ₹1,800
Total = ₹10,000 + ₹1,800 = ₹11,800

How It Works

1

Enter the Amount

Type the base amount or the total amount including GST. Choose whether the amount is GST-inclusive or GST-exclusive.

2

Select GST Rate

Pick the applicable GST rate — 5%, 12%, 18%, or 28%. Choose between intra-state (CGST + SGST) or inter-state (IGST) supply.

3

Get Instant Results

See the full breakdown: base amount, GST amount, CGST, SGST or IGST, and the total payable amount.

Current GST Rates in India (2026)

0% — Essential items: fresh fruits, vegetables, milk, bread, salt, natural honey, eggs

5% — Common necessities: packaged food, footwear under ₹1,000, coal, economy rail tickets, domestic air travel

12% — Standard goods: processed food, mobile phones, computers, sewing machines, business class air travel

18% — Most services and goods: IT services, financial services, restaurants in hotels, cameras, speakers

28% — Luxury and sin goods: automobiles, cement, ACs, dish washers, aerated water, tobacco, 5-star hotel rooms

Frequently Asked Questions

What is GST and how is it calculated?
GST (Goods and Services Tax) is an indirect tax levied on the supply of goods and services in India. For GST-exclusive calculation: GST Amount = Base Amount × GST Rate / 100. For GST-inclusive: Base Amount = Total Amount × 100 / (100 + GST Rate).
What is the difference between CGST, SGST, and IGST?
CGST (Central GST) and SGST (State GST) are charged equally on intra-state transactions (within the same state). IGST (Integrated GST) is charged on inter-state transactions (between different states). IGST rate = CGST rate + SGST rate.
How to calculate GST from a total amount (inclusive)?
To extract GST from an inclusive amount: Base Amount = Total / (1 + GST Rate/100). For example, if total is ₹1,180 with 18% GST: Base = 1180 / 1.18 = ₹1,000. GST = ₹180.
What is the most common GST rate in India?
18% is the most common GST rate, applicable to the majority of goods and services including IT services, financial services, telecom services, and most manufactured goods.
Is GST applicable on exports?
Exports are treated as zero-rated supply under GST. This means the GST rate on exports is 0%, and exporters can claim refund of the input tax credit (ITC) on inputs used for exported goods/services.
What is the GST threshold limit for registration?
For goods, the threshold is ₹40 lakhs annual turnover (₹20 lakhs for special category states). For services, it's ₹20 lakhs (₹10 lakhs for special category states). Below these limits, GST registration is optional.

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