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Calculate GST amounts for both inclusive and exclusive scenarios. Free GST calculator with CGST, SGST, and IGST breakdown.
Quick GST inclusive and exclusive calculations
Total Gross Amount
BASE + GST
Total GST Component
₹1,800
CGST (9.0%)
₹900
SGST (9.0%)
₹900
For intra-state transactions in India, the GST is equally divided between the Central Government (CGST) and the State Government (SGST).
GST is an indirect tax that replaced many other taxes like VAT, Service Tax, and Excise Duty. It is a single, destination-based tax system across India.
Exclusive: GST is added to the base price.
Inclusive: GST is already part of the total price (Reverse GST).
India primarily uses 4 slabs: 5% (Essential), 12% (Standard), 18% (Most common), and 28% (Luxury items).
A GST calculator helps you compute the Goods and Services Tax amount for any product or service. It works for both GST-inclusive (amount already includes GST) and GST-exclusive (GST to be added) scenarios.
Use our GST Calculator to get accurate results instantly. You may also want to explore our Income Tax Calculator or Profit Margin Calculator.
For exclusive calculation: GST is added to the base price. For inclusive calculation: GST is extracted from the total price. The calculator also shows the CGST and SGST split for intra-state transactions.
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Check the amortization schedule, charts, and download the PDF report for your records.
CGST = SGST = GST/2 for intra-state. IGST = GST (full) for inter-state.
1Base amount: ₹10,000
2GST (18%): ₹1,800
3Total amount: ₹11,800
4CGST: ₹900, SGST: ₹900
Total Amount: ₹11,800
1Total amount: ₹11,800
2GST included: ₹1,800
3Base amount: ₹10,000
4CGST: ₹900, SGST: ₹900
Base Amount: ₹10,000
Our GST Calculator uses the standard formula adopted by all major Indian banks and financial institutions. The calculation engine processes your inputs in real-time with 99.9% accuracy. All formulas are verified against official bank calculation methods and regulatory guidelines.
Last reviewed: 2026-07-13. We update our calculations whenever regulatory changes occur (tax slabs, interest rates, TDS rules, etc.).
Find answers to common questions about this calculator below.
For GST exclusive: GST amount = (Original amount × GST rate) / 100. For GST inclusive: GST amount = Original amount - (Original amount × 100/(100+GST rate)).
India has four main GST slabs: 5% (essential items), 12% (standard services), 18% (most goods and services), and 28% (luxury and sin goods). Some items are exempt (0%) or have special rates (0.25%, 3%).
CGST (Central GST) and SGST (State GST) are applied to intra-state transactions, split equally. IGST (Integrated GST) applies to inter-state transactions. For example, on an 18% intra-state sale, CGST = 9% and SGST = 9%.
Under reverse charge mechanism, the recipient of goods/services is liable to pay GST instead of the supplier. This applies to specified categories like unregistered supplier purchases and certain notified services.
MRP typically includes GST. To calculate: GST amount = MRP - (MRP × 100/(100+GST rate)). For a ₹1,000 item at 18% GST: GST = 1000 - (1000 × 100/118) = ₹152.54.
Restaurant bills (non-AC) attract 12% GST. AC restaurants and those with liquor license attract 18% GST. 5-star hotels have 18% GST on food bills.
Yes, gold attracts 3% GST. Making charges on gold jewellery attract 5% GST. Gold coins and bars sold by banks also attract 3% GST.
Under construction properties: 5% GST without ITC on affordable housing, 1% GST without ITC on affordable housing under CLSS. Completed properties (ready to move) are exempt from GST.
Yes, registered businesses can claim input tax credit on GST paid on purchases used for business purposes. ITC cannot be claimed on personal use items, motor vehicles (except for specified businesses), and certain other goods.
Late filing fee is ₹50 per day (₹25 CGST + ₹25 SGST) for GSTR-3B. Maximum late fee is ₹10,000 (₹5,000 CGST + ₹5,000 SGST). Late payment interest is 18% per annum.
To calculate GST manually: for exclusive, multiply amount by GST rate and divide by 100. For inclusive, multiply amount by GST rate and divide by (100 + GST rate). Example: 18% GST on ₹10,000 exclusive = ₹1,800. Inclusive from ₹11,800 = ₹1,800.
A reverse GST calculator extracts the GST amount from a total price that already includes GST. Formula: GST = Total - (Total × 100/(100 + GST rate)). If ₹11,800 includes 18% GST, the base is ₹10,000 and GST is ₹1,800.
To calculate 18% GST: for exclusive pricing, multiply base amount by 0.18. For inclusive pricing, multiply total by 18/118. Example: ₹10,000 + 18% GST = ₹11,800. From ₹11,800 inclusive, GST = ₹11,800 × 18/118 = ₹1,800.
To remove GST from total: Base Amount = Total × 100/(100 + GST rate). For 18% GST on ₹11,800: Base = 11,800 × 100/118 = ₹10,000. GST = Total - Base = ₹1,800. Use our GST calculator for instant inclusive/exclusive conversion.
Zoho GST calculator is a tool integrated with Zoho Books for automatic GST computation. Our standalone calculator provides similar functionality - compute GST for any rate, get CGST/SGST/IGST split, and verify Zoho calculations independently.