| Tax Breakdown | Amount |
|---|---|
| Base (Tax Exclusive) Amount | ₹0.00 |
| Tax Component (0%) | + ₹0.00 |
| Total Amount Payable | ₹0.00 |
The GST Calculator is a free, easy-to-use online tool designed to help you calculate Goods and Services Tax (GST) in seconds. Whether you need to add GST to a base price or remove it from a total amount, this calculator handles both GST-exclusive and GST-inclusive calculations with precision. Simply enter your amount, choose the applicable GST rate - 5%, 12%, 18%, or 28% - and instantly get the GST amount, total invoice value, and a complete breakup of CGST, SGST, or IGST.
Ideal for business owners, freelancers, accountants, tax consultants, and e-commerce sellers, this tool eliminates the need for manual calculations and complex formulas. Prepare accurate invoices, estimate product prices, and stay GST-compliant - all without any effort.
How to Use the GST Calculator?
Using the GST Calculator is straightforward. Follow these three simple steps:
- Step 1 - Select the GST Rate Choose the applicable GST slab: 5%, 12%, 18%, or 28% based on the goods or services you are dealing with.
- Step 2 - Enter Any One Value Input either the Amount without GST, the Amount with GST, or the GST Amount - the calculator will automatically compute all remaining fields in real time.
- Step 3 - View the Tax Breakup The GST Calculator instantly displays the total GST amount along with a detailed breakup under CGST & SGST (for intra-state supply) or IGST (for inter-state supply). Click the 'Clear' button to reset and start a fresh calculation.
GST Calculation Formula
Understanding the GST Calculation Formula helps you verify results and build confidence in your tax computations.
GST Exclusive Formula (Adding GST)
When you have a base price and want to calculate the total price including GST, use the following formula:
Total Amount = Base Amount * (1 + (GST Rate / 100))For example, if the base price is ₹1000 and the GST rate is 18%, the calculation would be:
Total Amount = 1000 * (1 + (18 / 100)) = 1000 * 1.18 = ₹1180GST Inclusive Formula (Removing GST)
When you have a total price including GST and want to calculate the base price, use the following formula:
Base Amount = Total Amount / (1 + (GST Rate / 100))For example, if the total price is ₹1180 and the GST rate is 18%, the calculation would be:
Base Amount = 1180 / (1 + (18 / 100)) = 1180 / 1.18 = ₹1000FAQs
Q1. What is a GST Calculator?
A GST Calculator is a free online tool that helps individuals and businesses instantly calculate Goods and Services Tax (GST) on any amount. It computes the GST amount, total invoice value, and provides a complete breakup of CGST, SGST, or IGST based on the selected GST rate - without requiring any manual formula.
How do I calculate GST on an amount?
To calculate GST on any amount, use this simple formula:
- GST Exclusive (Adding GST): GST Amount = Amount Without GST * GST Rate ÷ 100
- GST Inclusive (Removing GST): GST Amount = Amount With GST * GST Rate ÷ (100 + GST Rate)
For example, on ₹1,00,000 at 18% GST, the tax amount is ₹18,000 and the total invoice value is ₹1,18,000.
Q3. What are the GST tax slabs in India?
India follows a four-tier GST rate structure:
- 5% GST: Essential goods and services like food items, transportation, and healthcare.
- 12% GST: Processed foods, computers, and certain textiles.
- 18% GST: Most goods and services including electronics, financial services, and restaurants.
- 28% GST: Luxury items such as cars, tobacco products, and high-end consumer goods.
What is the difference between CGST, SGST, and IGST?
- CGST (Central GST) - Collected by the Central Government on intra-state transactions
- SGST (State GST) - Collected by the State Government on intra-state transactions
- IGST (Integrated GST) - Collected by the Central Government on inter-state transactions
For intra-state supply, GST is split equally between CGST and SGST. For inter-state supply, the full GST is charged as IGST.
Q5. How do I remove GST from a total amount?
To remove GST from a GST-inclusive price, use the reverse GST formula:
Original Price = Amount With GST ÷ (1 + GST Rate ÷ 100)For example, if the total amount is ₹1,18,000 at 18% GST: Original Price = ₹1,18,000 ÷ 1.18 = ₹1,00,000
Our GST Calculator automatically performs this reverse calculation when you enter the Amount with GST.
Q6. Is this GST Calculator free to use?
Yes, ToolRift's GST Calculator is completely free to use with no registration, login, or subscription required. Simply visit the page, enter your amount, select the GST rate, and get instant results.
Q7. Can I use this GST Calculator for GST invoices?
Absolutely. This GST Calculator is designed to help business owners, freelancers, and accountants prepare accurate GST invoices. It calculates the taxable value, GST amount, and total invoice value - all the figures required for a valid GST invoice under Indian tax law.
Q8. What is the GST Calculation Formula for 18%?
For an 18% GST rate:
- Adding GST: GST Amount = Base Price * 18 ÷ 100
- Removing GST: GST Amount = Total Price * 18 ÷ 118
Example: On a base price of ₹50,000, the GST at 18% = ₹9,000, making the total invoice value ₹59,000.
Q9. How is GST calculated for e-commerce sellers?
E-commerce sellers registered under GST must charge GST on every taxable sale. The applicable GST rate depends on the product category. For intra-state sales, CGST + SGST is applied; for inter-state sales, IGST is charged. Our GST Calculator simplifies this by computing both scenarios based on your input.
Q10. Does the GST Calculator work for all Indian states?
Yes, this online GST Calculator works for all Indian states and union territories. For intra-state transactions, it splits the GST equally into CGST and SGST. For inter-state transactions, the full amount is shown as IGST - applicable uniformly across India.