Tool 03
GST calculator
Educational arithmetic only. Enter the amount, choose whether it includes GST, and provide the applicable rate yourself.
Enter base or inclusive amount
The amount you enter will be treated as base (excludes GST) or inclusive based on the mode below.
Enter any rate 0–100, or pick a common one
Important context
Arithmetic ≠ advice.
You choose the rate
Rates vary by HSN/SAC, state, notification, and transaction type. This tool does not look up rates.
No taxability logic
Whether GST applies, reverse charge, or exemption applies is not calculated here.
No place of supply
IGST vs CGST+SGST depends on supplier/recipient locations. Not computed.
Professional verification required
Use this for estimation. File returns and collect taxes based on authorised advice.