What is a GST Calculator?
The Goods and Services Tax (GST) is an indirect tax levied on the supply of goods and services. Our free GST calculator helps business owners, freelancers, consumers, and accountants instantly determine the net price (exclusive of tax) and the gross price (inclusive of tax) — saving hours of manual computation.
⚡ Key Features & Benefits
💯 100% Free — No registration, no login, unlimited calculations.
➕➖ Add or Remove GST — Switch between inclusive and exclusive calculations.
⚡ Instant Results — Get net, tax, and gross amounts in milliseconds.
📱 Mobile Friendly — Works perfectly on all devices.
📋 How to Calculate GST
To Add GST: GST Amount = (Original Cost × GST Rate) / 100. Gross Price = Original Cost + GST Amount.
To Remove GST: GST Amount = Original Cost - [Original Cost × {100 / (100 + GST Rate)}]. Net Price = Original Cost - GST Amount.
👥 Common Use Cases
- Invoice Generation — Calculate exact tax amounts for client billing.
- Price Comparison — Compare pre-tax prices across vendors.
- Freelancers — Determine how much GST to charge on your services.
- Consumers — Find out the real cost before tax on any purchase.
❓ Frequently Asked Questions
Yes, 100% free with no login required and unlimited usage.
Adding GST calculates the tax on top of a base price (exclusive → inclusive). Removing GST extracts the tax from a final price (inclusive → exclusive).
Yes! You can enter any custom GST rate percentage. Common rates include 5%, 12%, 18%, and 28%.