What is GST/VAT Calculator?
The GST/VAT Calculator is a financial calculation utility designed to determine tax amounts and net totals for billing, retail purchases, and accounting tasks. Whether you need to append tax to a net quote or extract the embedded tax from a gross receipt, the tool applies standardized arithmetic formulas based on your chosen rate.
The tool provides two operational modes via a dropdown menu. "Add tax" calculates the gross total by multiplying amount × (1 + rate) and determines the tax component using amount × rate. "Extract tax" calculates the original pre-tax amount by dividing amount ÷ (1 + rate) and identifies the tax share by subtracting the pre-tax figure from the gross amount.
After entering your values and clicking Calculate, the utility presents all results formatted to two decimal places. This ensures neat currency representations suitable for invoices, expense reports, and tax filings.
How to use it
- Enter your numerical currency value into the Amount input field.
- Enter the applicable tax rate percentage into the % input field, which defaults to "10".
- Select either Add tax or Extract tax from the calculation mode dropdown.
- Click the Calculate button to display the computed tax and total figures, formatted with two decimal places.
Why use this over alternatives
Many online tax calculators require complex country selections or bombard users with advertisements. This calculator provides direct tax addition and extraction using clear mathematical formulas directly on your device. It runs locally in your browser using client-side JavaScript. The tool does not intentionally send your financial figures or tax values to our servers.