GST Calculator
Calculate GST from a base amount and a rate you enter, with separate base, tax and total values.
How to use GST Calculator
- Enter Amount, Total tax / GST rate (%).
- Choose Run tool to calculate or generate the result.
- Check the result and the limitations below before reusing it.
A practical example
Options:
{
"amount": 1000,
"rate": 18
}
Example result:
{
"baseAmount": 1000,
"tax": 180,
"combinedTax": 180,
"total": 1180
}Limitations and common mistakes
Rate is supplied by you; this does not determine tax liability or applicable GST rules. CGST/SGST each show half the entered combined rate.
Rate is supplied by you; this does not determine tax liability or applicable GST rules. CGST/SGST each show half the entered combined rate.
Questions about GST Calculator
What input does GST Calculator need?
Input options: Amount, Total tax / GST rate (%).
What does GST Calculator return?
Calculated result fields: baseAmount, tax, combinedTax, total.
What should I check before using GST Calculator results?
Rate is supplied by you; this does not determine tax liability or applicable GST rules. CGST/SGST each show half the entered combined rate.
How is the added tax calculated?
Tax = base amount × entered rate ÷ 100; total = base amount + tax. For a base of 1,000 and an entered 18% rate, tax is 180 and total is 1,180. The example rate does not establish the rate applicable to your transaction.
Supported input and output
Input options: Amount, Total tax / GST rate (%).
Calculated result fields: baseAmount, tax, combinedTax, total.