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Understand the method before using any result. The details below describe the purpose and assumptions for this tool.
How the gst calculator works
The gst calculator helps you estimate results using the assumptions and values you provide. Review the formula and example before relying on the result.
Formula and assumptions
Tax amount = taxable amount × tax rate ÷ 100. Total = taxable amount + tax amount. This does not determine the correct tax rate for your transaction.
Example
A 100 amount with an entered 18% rate gives 18 tax and a total of 118.
Important information
Results depend on the values, jurisdiction, date and assumptions you enter. Financial products, tax rules and medical recommendations may vary by location and change over time. Verify critical results with reliable sources.