GST Calculator India

About GST Calculator India

Calculate GST instantly for any amount in India. Whether you need to add GST to a base price or extract GST from a GST-inclusive amount, this calculator gives you the base price, GST amount, and final total in one click — across all standard slabs (5%, 12%, 18%, 28%).

What it does

Computes GST-inclusive and GST-exclusive prices, showing the base amount, GST value, and total for your chosen rate.

How to use

1. Enter the amount (base price or GST-inclusive price).
2. Select the GST rate (5%, 12%, 18%, or 28%) or enter a custom rate.
3. Choose add or remove GST and view the instant breakdown.

Key features

• Add GST to a base price or remove GST from a total
• All standard Indian GST slabs plus custom rates
• Instant base + GST amount + total breakdown
• Free, no signup, works on mobile

When to use it

• Creating invoices with the correct GST split
• Checking how much GST is included in a bill
• Pricing products for your shop or online store

Tips for best results

• Use "remove GST" when a price already includes tax (MRP).
• Match the rate to your product's HSN slab.
• For interstate vs intrastate, the total GST is the same; only IGST vs CGST+SGST split differs.

Can it remove GST from an inclusive price? Yes — enter a GST-inclusive amount to get the base price and GST value.

Which GST rates are supported? 5%, 12%, 18%, 28% and custom rates.

Does it split CGST and SGST? The total GST is calculated; CGST+SGST is simply half each for intrastate sales.

Is it free? Yes, completely free with no signup.

Is it accurate for invoices? Yes, it uses standard GST formulas for accurate results.