GST Calculator

Add or remove GST from any amount. Supports all Indian GST slabs with CGST/SGST and IGST breakdowns.

Free Indian GST Calculator

Add or remove GST from any amount for all Indian slabs. Get a full CGST/SGST breakdown for intra-state transactions and IGST for inter-state, calculated instantly with no accounts required.

All Indian GST slabs

0%, 0.1%, 0.25%, 1.5%, 3%, 5%, 12%, 18%, and 28% — covering every standard GST rate.

Add or remove GST

Add GST to a base price (exclusive → inclusive) or reverse-calculate the base from a GST-inclusive total.

CGST + SGST breakdown

For intra-state transactions, the GST is split equally into CGST and SGST/UTGST as required by Indian GST law.

IGST for inter-state

Switch to inter-state to see the total GST as a single IGST amount — applicable when buyer and seller are in different states.

Instant results

Every field updates the moment you change the amount, rate, or mode — no button required.

India-specific design

Amounts displayed in Indian Rupees with the ₹ symbol and Indian number formatting (lakhs/crores).

Frequently asked questions

What is GST?
GST (Goods and Services Tax) is India's unified indirect tax on goods and services, applied at rates of 0%, 5%, 12%, 18%, and 28% plus special rates.
What is the difference between CGST, SGST, and IGST?
Intra-state: GST is split equally into CGST (Centre) and SGST (State). Inter-state: the full GST is collected as IGST by the Centre.
How do I remove GST from a GST-inclusive amount?
Select "Remove GST" mode. Enter the inclusive total and the rate. The base is calculated as Total ÷ (1 + rate / 100).
Which GST slabs are supported?
All standard slabs: 0%, 0.1%, 0.25%, 1.5%, 3%, 5%, 12%, 18%, and 28%.
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