Premium GST Calculator

How to "Add GST" (Tax Exclusive)

If you know the base price of a product or service, but you need to add the government tax on top of it, use the Add GST (+) mode.

The Math Formula:
GST Amount = (Base Price × GST%) / 100
Total Final Price = Base Price + GST Amount

Example: A laptop base price is ₹50,000. Adding 18% GST gives a tax of ₹9,000. The final customer price is ₹59,000.

How to "Remove GST" (Tax Inclusive)

Sometimes you see a total price (like a receipt) and need to extract the exact tax amount hidden inside it. This is called reverse calculation. Use the Remove GST (-) mode for this.

The Math Formula:
Base Price = Total Price / (1 + (GST% / 100))
GST Amount = Total Price - Base Price

This is crucial for business owners who need to log their net revenue properly in accounting software.

Understanding CGST, SGST, and IGST

In countries like India, the GST structure is split into parts depending on where the sale happens. Our calculator breaks this down automatically for you:

• CGST (Central GST): Goes to the central government. It is exactly half (50%) of the total GST amount for intra-state sales.
• SGST (State GST): Goes to the state government. It is the other 50% of the total GST amount.
• IGST (Integrated GST): Applied when selling between two different states. It is the full 100% combined rate.

Popular Tax Slabs

Different items attract different rates. While you can type any custom percentage into our tool, here are the standard slabs you can click quickly:

• 5% Slab: Usually for essential household items, sugar, spices, and basic services.
• 12% Slab: Used for computers, processed food, and business class air tickets.
• 18% Slab: The most common rate! Used for software, electronics, banking services, and restaurants.
• 28% Slab: Applied to luxury goods, automobiles, and premium hotels.