The GST / Tax Calculator lets you add tax to a pre-tax price, remove tax from a tax-inclusive total to find the original amount, or compare how a price changes across multiple common tax rates side by side. With quick-select buttons for popular rates like 5%, 18%, and 28%, it's built for fast invoice checks, billing, and shopping calculations.
Yes! Toolinium GST / Tax Calculator is 100% free with no registration required.
No. All processing happens entirely in your browser. Your data never leaves your device.
Adding tax takes a pre-tax amount and calculates the tax-inclusive total, while removing tax works backward from a tax-inclusive total to find the original pre-tax amount.
Yes, simply enter the correct tax percentage for your country or region — the math works the same regardless of what the tax is called locally.
The GST / Tax Calculator lets you add tax to a pre-tax price, remove tax from a tax-inclusive total to find the original amount, or compare how a price…
No. GST / Tax Calculator runs completely inside your web browser — nothing to download or install.
Yes, GST / Tax Calculator is fully responsive and works smoothly on phones, tablets, and desktops.
Yes, GST / Tax Calculator is free to use for both personal and commercial purposes.
No account or sign-up is needed — just open the tool and start using it right away.
Yes, Toolinium regularly reviews and improves every tool, including GST / Tax Calculator, based on user feedback.
GST / Tax Calculator works on all modern browsers including Chrome, Firefox, Edge, and Safari.