This GST calculator India supports common slabs (5%, 12%, 18%, 28%) for exclusive and inclusive pricing. Enter amount and rate to split base value and GST for invoices and quotes.

Verify current slab for your HSN/SAC category—rates change with policy updates.

How to use this tool

Choose inclusive or exclusive mode, enter amount, select GST rate, calculate base and tax components.

Worked example

Example: ₹1,180 inclusive at 18% → ₹1,000 base + ₹180 GST.

When to use this

Drafting Indian invoices.
Reverse-calculating tax from MRP.
Training billing staff on GST splits.

Common mistakes

Wrong slab for product category.
Mixing CGST/SGST display with single-rate math.
Rounding per line vs invoice total.

cgst sgst calculator
gst reverse calculation
invoice gst breakdown

How it works

Enter an amount and GST rate, then choose whether the amount is tax-exclusive or tax-inclusive to calculate GST, pre-tax value, and total. Results are educational estimates.

Limitations

Results are estimates for educational purposes and are not tax advice. GST rules vary by jurisdiction.

Privacy and file handling

Your data stays on your device and is not uploaded.

Related GST Calculator guides

These pages use the same gst calculator with guides tailored to specific search intents.

GST Calculator — general payment estimate
GST Calculator Canada
GST Amount Calculator
GST Inclusive Price Calculator
GST Exclusive Calculator

FAQ

Frequently asked questions

CGST and SGST?

Combined rate equals CGST+SGGST for intra-state; IGST for inter-state—this tool uses total GST rate.

Latest rates?

Confirm slab on official notifications; calculator uses selectable standard rates.

Export invoices?

Use Invoice Generator for formatted PDF after calculating tax.

Page last reviewed: July 5, 2026

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