Taxes

GST Calculator

Add or remove GST instantly with a clear CGST / SGST / IGST breakdown

Enter details

₹

Total amount (incl. GST)

₹11,800.00

How the GST Calculator works

Goods and Services Tax (GST) is an indirect tax levied on the supply of goods and services in India. This calculator handles both directions — adding GST to a base price, or extracting the GST already included in a final price.

Add GST: GST = Amount × Rate / 100  •  Total = Amount + GST
Remove GST: Net = Amount / (1 + Rate / 100)  •  GST = Amount − Net

For intra-state supplies the GST splits equally into CGST and SGST (half the rate each). For inter-state supplies the full rate is charged as a single IGST.

Why use it

Detailed features

All GST slabs

One-tap presets for 3%, 5%, 12%, 18% and 28%, plus any custom rate you enter.

CGST / SGST / IGST split

See the exact tax breakdown for intra-state and inter-state transactions.

Add & reverse GST

Work forward from a base price or backward from a GST-inclusive amount.

On the go

Get the same calculator plus 60+ tools in the free Toolance Android app.

Frequently asked questions

Enter the amount and GST rate (5%, 12%, 18% or 28% for most goods). The tool shows tax amount and gross or net value depending on whether your figure is exclusive or inclusive of GST.
On intra-state sales, GST splits into equal Central and State components. IGST applies on inter-state supply. The total rate is still the slab you know, like 18%.
Use the reverse calculation: tax equals inclusive price times rate divided by 100 plus rate. Our calculator can work backwards so you know the pre-tax value.
VAT applied before GST rollout in 2017. Current goods and services use GST slabs. Some items also attract cess on top of the base slab.
No GSTIN is needed for basic math. Businesses issue invoices with their GSTIN separately; this tool only handles rate and amount.
Rates depend on HSN or SAC code and government notifications. Check the latest CBIC schedule or ask your CA for your business line.
No. This helps with quick tax arithmetic only. Return filing, ITC matching and compliance need proper accounting software or a tax professional.
Yes. Use it online anytime with no signup or charge for basic calculations.