Free GST calculator — add or remove GST (5%, 12%, 18%, 28%) and split into CGST/SGST for any invoice amount.
GST / VAT
Add or remove tax instantly. Country presets below.
Gross amount
Includes tax breakdown below.
Gross
$0.00
$0.00
$0.00
$0.00
Was GST Calculator useful?
Your vote helps us prioritize improvements.
The QuickToolz GST Calculator adds or removes Goods and Services Tax at any rate. Pick a standard Indian GST slab (5%, 12%, 18%, 28%) or enter a custom rate, then see the tax amount, total, and CGST/SGST breakdown instantly.
Add GST: you have the net price and want the gross invoice total
Remove GST: you have the gross price (inclusive) and need the base amount and tax separately
For intra-state transactions in India, GST is split equally between CGST (Central) and SGST (State). For inter-state, it’s a single IGST. Our calculator shows the correct split for both scenarios.
Everything you need, nothing you don’t. Built for speed and simplicity.
Both directions supported with one tap.
See the central/state split for intra-state invoices.
One-tap presets for 5%, 12%, 18%, and 28%.
Everything you need, nothing you don’t. Built for speed and simplicity.
Toggle between adding GST to a net amount or extracting GST from a gross amount.
Got questions? We’ve got answers. Common questions about GST Calculator.
Live calculation as you type.
Select 5/12/18/28% or enter a custom rate.
CGST, SGST (or IGST), and the final total update live.