"This GST calculator saves me hours every week on invoicing. It's accurate and incredibly fast!"
Small Business Owner
Free GST Calculator
Instantly calculate Goods and Services Tax with multiple tax rates. Find GST amount, total price with tax, or base price from final amount in seconds.
Base Price
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GST Amount (18%)
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Total (with GST)
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How to Use This Tool
Calculate GST in three simple steps
Our GST calculator supports both adding and removing tax. Choose your calculation mode and enter the required values.
1
Choose calculation mode
Select "Add GST" to calculate tax on a base price, or "Remove GST" to find the pre-tax price from a final amount.
2
Enter the amount and rate
Input your base or final price, and select the appropriate GST rate (5%, 12%, 18%, 28%, or custom).
3
View instant results
The calculator instantly displays GST amount, total price with tax, and base price in a clear breakdown.
What is GST?
Goods and Services Tax (GST) is a consumption-based tax levied on the supply of goods and services. Most countries have implemented GST as a key source of government revenue. The tax amount depends on the product category and jurisdiction. Common GST rates include 5% for essentials, 12% for regular goods, 18% for standard items, and 28% for luxury products. This calculator helps businesses and consumers quickly determine tax liabilities and final prices.
Testimonials
What users say about our GST Calculator
Small business owners, accountants, and e-commerce sellers rely on our GST calculator daily.
"Perfect for calculating final prices before publishing products online. My customers appreciate the transparency."
E-commerce Manager
"Remove GST feature helps verify invoices quickly. Highly recommended for accountants and bookkeepers."
Chartered Accountant
FAQ
GST Calculator FAQs
Get answers to common questions about GST calculations and our calculator.
Add GST mode calculates the tax amount on a base price and shows the total price including tax. This is useful when you have a product's pre-tax cost and need to display the final selling price to customers.
Remove GST mode extracts the tax amount from a final price and calculates the base price. This is helpful when you have an inclusive price and need to separate the tax component for accounting or invoice verification.
Yes! Select "Custom rate" from the GST rate dropdown and enter your desired percentage. This allows you to calculate tax at any rate, useful for different products or jurisdictions.
Common GST rates are: 5% (essential services like healthcare), 12% (regular goods), 18% (standard rate for most items), and 28% (luxury and premium products). Rates vary by country and product category.
The calculator performs standard tax calculations and works with any GST rate. However, tax laws and rates vary by country. Always verify rates specific to your jurisdiction and consult local tax authorities for compliance.
Need Advanced Tax Calculations?
Upgrade for batch processing, detailed reports, and expert tax guidance.
Upgrade NowOur free GST calculator is designed for businesses, accountants, e-commerce sellers, and anyone needing quick tax calculations. Whether you're calculating the final price for a product listing or verifying invoices received from suppliers, this tool provides accurate results in seconds. Supports all standard GST rates (5%, 12%, 18%, 28%) plus custom rates for special cases. No registration or installation needed—just enter your amount and rate to get instant calculations.