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Free GST / Tax Calculator Online
Free GST / Tax Calculator Online is a free online tool by US AI. Add or remove tax. It runs completely in your browser — no signup, no download, works on mobile and desktop.
📖 How to use
- Enter an amount and tax percent, then press Add Tax or Remove Tax to calculate the totals.
- Open the tool with the button above — it loads instantly.
- Your work stays on your device; nothing is uploaded anywhere.
✨ Why use this tool?
US AI's free gst / tax calculator online is fast, private and 100% free forever. Bookmark this page and share it with anyone who needs it.
❓ Frequently asked questions
What is GST?
GST (Goods and Services Tax) is a tax added to the price of goods and services. This calculator adds it to a net price or extracts it from a tax-inclusive price.
What is the difference between GST-inclusive and GST-exclusive prices?
Exclusive means the tax is added on top of the shown price; inclusive means the tax is already inside the shown price and the calculator separates it out.
Can I use different GST rates?
Yes. Enter any rate — 5%, 12%, 18%, 28%, or a custom value — and the calculator breaks down the base amount and the tax.