GST Calculator
Calculate GST exclusive and inclusive amounts instantly. Get CGST, SGST, and total payable in one click.
Both Directions
Calculate GST-exclusive (add) or GST-inclusive (remove) with a single toggle.
Quick Rate Select
Tap 5%, 12%, 18%, or 28% for standard Indian GST slabs instantly.
Full Breakdown
See base amount, GST value, and final total in a clean, clear display.
GST Calculator Guide
What this calculator does
This GST calculator helps users compute tax values for both exclusive and inclusive pricing formats. In exclusive mode, the entered amount is treated as base value and GST is added to get final payable amount. In inclusive mode, GST is extracted from a gross figure so you can identify taxable base and tax component separately. This is useful for billing, compliance checks, and quick invoice validation.
How to use it
Choose a mode, enter amount, and input GST rate. You can also use quick-select chips for standard slabs. The panel updates instantly and shows GST amount, base amount, and total payable so you can review values at a glance. For better accuracy, always verify that your selected mode matches whether your source amount already includes tax.
Example usage
If a product has a base price of ₹10,000 and rate is 18%, exclusive mode shows GST as ₹1,800 and total as ₹11,800. If ₹11,800 is entered in inclusive mode at 18%, the calculator extracts base close to ₹10,000 and GST close to ₹1,800. This simple comparison helps merchants and buyers confirm pricing consistency before payment.