GST Calculator
Calculate Goods and Services Tax for inclusive and exclusive prices
Common rates: 5% (essentials), 12% (standard), 18% (services), 28% (luxury)
GST Amount: at % rate
Base Price
Before GST
GST Amount
% of total
Total Price
Including GST
Tax Split (Intra-State)
CGST (%)
Central GST
SGST (%)
State GST
For inter-state transactions, IGST = (full GST amount)
Price Breakdown
Base Price
(%)
GST
(%)
Calculation Summary
| Base Price | |
| GST Rate | % |
| GST Amount | |
| ↳ CGST | |
| ↳ SGST | |
| Total Price |
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About GST Calculator
What is GST Calculator?
A GST (Goods and Services Tax) Calculator helps you calculate the tax amount on goods and services. It can add GST to a base price (GST exclusive calculation) or extract GST from a total price (GST inclusive calculation).
How to Use This Calculator
- Select Calculation Type: Choose whether to add GST or remove GST from a price
- Enter Amount: Input the price (exclusive or inclusive of GST)
- Select GST Rate: Choose from common rates (5%, 12%, 18%, 28%) or enter a custom rate
- View Results: See the calculated GST amount, base price, and total instantly
GST Calculation Formulas
Adding GST (GST Exclusive)
When you have the price before GST:
- GST Amount = Original Price × (GST Rate / 100)
- Total Price = Original Price + GST Amount
- Simplified: Total Price = Original Price × (1 + GST Rate / 100)
Removing GST (GST Inclusive)
When you have the total price including GST:
- Base Price = Total Price / (1 + GST Rate / 100)
- GST Amount = Total Price - Base Price
Common GST Rates
| Rate | Applicable Items |
|---|---|
| 0% | Essential items like fresh food, healthcare |
| 5% | Household necessities, packaged food items |
| 12% | Processed food, computers, mobile phones |
| 18% | Most goods and services, electronics |
| 28% | Luxury items, automobiles, tobacco |
Understanding CGST and SGST
For intra-state transactions, GST is split equally:
- CGST (Central GST): Half of total GST goes to central government
- SGST (State GST): Half of total GST goes to state government
For inter-state transactions:
- IGST (Integrated GST): Full GST amount goes to central government
Practical Examples
Example 1: Adding GST
Product price: ₹1,000 (before GST) GST rate: 18%
- GST Amount = ₹1,000 × 18% = ₹180
- Total Price = ₹1,000 + ₹180 = ₹1,180
Example 2: Extracting GST
Total paid: ₹1,180 (including GST) GST rate: 18%
- Base Price = ₹1,180 / 1.18 = ₹1,000
- GST Amount = ₹1,180 - ₹1,000 = ₹180
Frequently Asked Questions
What is the difference between GST inclusive and exclusive?
GST exclusive means the listed price does not include tax (you pay extra). GST inclusive means the tax is already included in the displayed price.
How do I know which GST rate applies?
GST rates depend on the type of goods or services. Essential items have lower rates (0-5%), while luxury items have higher rates (28%).
Can I claim GST input credit?
Businesses registered under GST can claim input tax credit for GST paid on purchases used for business purposes.
Disclaimer: This calculator provides estimates for informational purposes only. GST rates may vary by jurisdiction and product category. Consult a tax professional for official guidance.
Quick Reference
📊 Add GST Formula
GST = Base Price × Rate%
Total = Base Price + GST
📉 Remove GST Formula
Base = Total ÷ (1 + Rate%)
GST = Total - Base Price