GST Calculator – Add or Remove GST Instantly (All Slabs)

Confused about how to calculate GST on your invoices or purchases? Whether you're a business owner, a freelancer, or a consumer, our Free Online GST Calculator makes it simple. Instantly add GST to a base price or find the pre-tax amount from a GST-inclusive price. Get a clear breakdown of CGST, SGST, and the final amount in seconds.

GST Calculator Tool GST Calculator Add or Remove Tax Instantly Base: ₹1000.00 GST(18%): ₹180.00 Total: ₹1180.00

GST Calculation Tool

Base Amount₹0.00
CGST ()₹0.00
SGST ()₹0.00
Total Amount₹0.00

How to Use the GST Calculator

Our calculator performs two main functions. Here’s how to use them:

1. To Add GST to a Net Amount (GST Exclusive)

  1. Enter the base (pre-tax) amount in the "Enter Amount" field.
  2. Select the applicable GST rate (e.g., 18%).
  3. Choose the "Add GST (Exclusive)" option.
  4. The tool will instantly show the breakdown of CGST, SGST, and the final gross amount.

2. To Find the GST Portion from a Gross Amount (GST Inclusive)

  1. Enter the total (MRP) amount in the "Enter Amount" field.
  2. Select the GST rate that was applied.
  3. Choose the "Remove GST (Inclusive)" option.
  4. The tool will instantly calculate the original base amount and the GST portion.

What is GST and How is it Calculated?

GST (Goods and Services Tax) is an indirect tax used in India on the supply of goods and services. It's a comprehensive tax that has replaced many indirect taxes like VAT, service tax, and excise duty.

How the Calculation Works

  • Adding GST (Exclusive): This is used when you have a base price and need to add tax. The formula is: GST Amount = Base Price × (GST Rate / 100) and Total Price = Base Price + GST Amount.
  • Removing GST (Inclusive): This is used when you have a final price (like an MRP) and need to find the original value. The formula is: Base Price = Total Price / (1 + (GST Rate / 100)).

Frequently Asked Questions (FAQ)

Q1: What is the difference between CGST, SGST, and IGST?

Answer:

  • CGST (Central GST) and SGST (State GST) are applied on intra-state (within the same state) transactions. The total GST rate is split equally between them. For an 18% GST rate, 9% is CGST and 9% is SGST. Our calculator shows this breakdown.
  • IGST (Integrated GST) is applied on inter-state (between two different states) transactions. The rate is the full GST rate (e.g., 18%). The total tax amount is the same as CGST + SGST combined.

Q2: Is this calculator suitable for filing official tax returns?

Answer: This tool provides mathematically accurate calculations for quick estimates, invoicing, and cross-checking. However, for official GST return filing, you should always use professional accounting software and consult with a tax professional to ensure full compliance with all regulations.

Q3: How do I know which GST rate applies to my product or service?

Answer: The Government of India assigns different GST rates to various categories of goods and services. The most common rates are 5%, 12%, 18%, and 28%. You can find the correct rate for your specific item or service by checking the official HSN (for goods) or SAC (for services) code list on the GST portal.