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

1. Select Calculation Type: Choose whether to add GST or remove GST from a price
2. Enter Amount: Input the price (exclusive or inclusive of GST)
3. Select GST Rate: Choose from common rates (5%, 12%, 18%, 28%) or enter a custom rate
4. 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

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.