GST Calculator - Calculate Goods and Services Tax

Free Online GST Calculator

Our GST calculator is a comprehensive, user-friendly tool designed to calculate Goods and Services Tax (GST) for multiple countries including Australia, Canada, India, Malaysia, New Zealand, and Singapore. Whether you're calculating tax for business transactions, personal purchases, or financial planning, this calculator provides instant and accurate results.

What is GST?

GST (Goods and Services Tax) is a value-added tax levied on most goods and services sold for domestic consumption. It's a consumption tax that is ultimately borne by the end consumer. Different countries have different GST rates and structures:

Australia: 10% GST on most goods and services
Canada: 5% GST (federal) + provincial taxes
India: 5%, 12%, 18%, and 28% GST rates depending on the product/service
Malaysia: 6% GST (replaced by SST in 2018, but still relevant for historical calculations)
New Zealand: 15% GST on most goods and services
Singapore: 7% GST on most goods and services

Calculation Types

Our GST calculator supports two main calculation methods:

1. Net Amount to Gross Amount

Calculate the total amount including GST when you know the net (pre-tax) amount. This is useful when you have the base price and need to know the final price including tax.

Formula:

GST Amount = Net Amount × (GST Rate ÷ 100)
Gross Amount = Net Amount + GST Amount

2. Gross Amount to Net Amount

Calculate the net amount and GST when you know the total amount including tax. This is useful when you have the final price and need to know how much tax was included.

Formula:

Net Amount = Gross Amount ÷ (1 + GST Rate ÷ 100)
GST Amount = Gross Amount - Net Amount

How to Use the Calculator

Select Calculation Type: Choose between "Net Amount to Gross Amount" or "Gross Amount to Net Amount" based on what you know.
Enter Amount: Input the amount you know (net amount or gross amount).
Select GST Rate: Choose from common rates (5%, 10%, 12%, 15%, 18%, 28%) or enter a custom rate.
Calculate: Click the "Calculate" button to get instant results.
Clear: Reset all fields to start a new calculation.

Real-World Applications

This GST calculator is useful in many scenarios:

Business: Calculate GST for invoices, receipts, and business transactions
E-commerce: Determine final prices including tax for online sales
Personal Finance: Calculate tax on purchases and services
Accounting: Separate GST from total amounts for bookkeeping
Budgeting: Plan expenses including tax implications
International Business: Calculate GST for different countries

GST Rate Information by Country

Country	GST Rate	Notes
Australia	10%	Applied to most goods and services
Canada	5%	Federal GST + provincial taxes
India	5%, 12%, 18%, 28%	Multiple rates based on product category
New Zealand	15%	Applied to most goods and services
Singapore	7%	Applied to most goods and services

Mobile-Optimized Design

Our GST calculator is fully responsive and optimized for mobile devices. The interface adapts seamlessly to different screen sizes, making it easy to calculate GST on the go using smartphones and tablets.

Accuracy and Reliability

All calculations are performed using precise mathematical formulas to ensure accuracy. The calculator handles decimal numbers and provides results with appropriate precision. Error handling ensures you get clear feedback if invalid inputs are entered.

Frequently Asked Questions

How accurate are the GST calculations?

Our calculator uses precise mathematical formulas and handles decimal numbers with high accuracy. Results are displayed with appropriate decimal places and currency formatting.

Can I use this calculator for any country's GST?

Yes! While we provide common GST rates for major countries, you can enter any custom GST rate to calculate tax for any country or jurisdiction that uses GST or similar value-added tax systems.

What's the difference between net amount and gross amount?

Net amount is the price before GST is added. Gross amount is the final price including GST. For example, if an item costs $100 (net) with 10% GST, the gross amount would be $110.

Can I calculate GST in reverse (from gross to net)?

Yes! Our calculator supports both directions. You can calculate from net to gross (adding GST) or from gross to net (removing GST) depending on what information you have.

Is this calculator suitable for business use?

While this calculator provides accurate calculations, always consult with a tax professional for official business tax calculations and compliance requirements in your jurisdiction.

Can I use this on my mobile device?

Yes! The calculator is fully responsive and optimized for mobile devices. The interface adapts to different screen sizes for the best user experience on smartphones and tablets.