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.