GST Calculator
Add or remove GST at any rate — 5%, 18%, 40%, or a custom slab.
GST slabs and rates are tentative, not official — the government revises them from time to time. Always verify the current rate for your specific goods/services before relying on this for real invoicing or filing.
Calculate GST both ways: add GST to a pre-tax amount to get the total, or pull the GST amount back out of a tax-inclusive price. Covers India's current GST slabs (5% and 18% standard, 40% for luxury/sin goods) plus any custom rate.
Frequently asked questions
What are India's current GST rates?
Following the September 2025 GST 2.0 reform, most goods and services fall under two main slabs — 5% and 18% — with a 40% rate reserved for luxury and sin goods like tobacco and pan masala. The older 12% and 28% slabs were folded into 5% and 18%.
What's the difference between "Add GST" and "Remove GST"?
"Add GST" starts from a pre-tax price and calculates the tax-inclusive total. "Remove GST" does the reverse — starting from a price that already includes GST, it works out how much of that total is the base price versus the tax.
Can I use a rate other than the standard slabs?
Yes — type any percentage into the custom rate field and it's used instead of the preset buttons.