GST Calculator

GST Calculator — Calculate Goods and Services Tax Online

The GST Calculator is a free online tool that helps you calculate the Goods and Services Tax (GST) on any product, service, or invoice in seconds. Whether you need to add GST to a base price or extract the GST amount from a tax-inclusive total, this calculator delivers accurate results with a single click. It supports any GST rate, making it useful in India, Australia, Canada, New Zealand, Singapore, and other countries that use a GST-based indirect tax system.

What Is GST?

GST (Goods and Services Tax) is a value-added tax levied on most goods and services sold for domestic consumption. It replaces multiple older indirect taxes such as VAT, service tax, and excise duty with a single unified rate. In India, common slabs are 5%, 12%, 18%, and 28%. Australia and New Zealand apply a flat 10% and 15% respectively. Understanding how to compute GST is essential for business owners, freelancers, accountants, e-commerce sellers, and even consumers verifying invoices.

How to Use the GST Calculator

Enter the base amount (excluding tax) or the total amount (including tax), then choose the applicable GST rate. The tool instantly displays the GST amount, the net price, and the gross price. You can switch between Add GST and Remove GST modes depending on whether you start from a tax-exclusive or tax-inclusive figure. The result is rounded to two decimal places for clean invoicing.

Why Use Our Online GST Calculator?

Manual GST calculation is prone to errors, especially when you process dozens of invoices a day. This calculator removes math mistakes, works offline once loaded, and requires no signup. It is mobile-friendly, fast, and completely free — perfect for small business owners, accountants, and shoppers who want a quick way to verify tax amounts. Bookmark this page to access GST calculations anytime you need them.

Tamer Baghdadi

CEO / Co-Founder