Add or remove GST
GST at 5, 12, 18 or 28%, with CGST/SGST split.
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About this tool
Two directions: add GST to a pre-tax amount to see the final price, or start from a tax-inclusive total and extract the base amount and the tax inside it. Quick buttons cover the standard 5, 12, 18 and 28 percent slabs, and any custom rate works too.
The CGST/SGST split (half and half for intra-state sales) is shown alongside, which is what invoices actually need. Calculated locally, instantly.
How it works
- Type an amount and pick your currencies.
- The result updates live as you type.
- Swap the direction with one click.
Frequently asked questions
How do I remove GST from a total that already includes it?
Divide the total by 1 plus the rate. An 1180 rupee bill at 18% GST contains a base of 1180 / 1.18 = 1000 and 180 of tax. Pick 'Remove GST' mode and this happens automatically.
What are CGST and SGST?
For sales within a state, GST is split equally between the centre (CGST) and the state (SGST), so an 18% rate appears on invoices as 9% + 9%. Interstate sales use a single IGST at the full rate instead.
Which GST rates apply to what?
Broadly: 5% for essentials and transport, 12% and 18% for most goods and services (18% is the most common), and 28% for luxury and sin goods. Rates change with council decisions, so check the current schedule for your specific item.