Calculate GST and VAT instantly. Add or remove tax from any price — free, fast, and no signup needed.
GST / VAT Calculator
Calculate tax amount and final/net amount using GST or VAT with add or remove tax mode.
Disclaimer: This tool works directly in your browser. No data is uploaded or stored.
Quick Features
⚡ Instant results
🔒 100% private
🆓 Free to use
📱 Mobile friendly
What is a GST / VAT Calculator?
A GST calculator helps you quickly find the tax on any price. GST (Goods and Services Tax) and VAT (Value Added Tax) are consumption taxes used in different countries. Both work the same way — a percentage added to a product or service price.
Manually calculating tax is slow and error-prone. A gst calculator online saves time and eliminates mistakes.
You can use this tool in many situations:
- Business billing — add tax to invoices in seconds
- Shopping — know the final price before paying
- Invoicing — generate accurate tax breakdowns for clients
Whether you need to add GST to a base price or remove GST from a total, this tax calculator online handles both. It supports both GST and VAT, making it useful for users worldwide.
GST / VAT Formulas & Examples
A) Add Tax (Exclusive Price)
Use this when you have a base price and need to find the total after adding tax.
Formula:
Tax Amount = Price × (Tax Rate ÷ 100)
Final Price = Price + Tax AmountExample:
| Field | Value |
|---|---|
| Price | $100 |
| Tax Rate | 10% |
| Tax Amount | $10 |
| Final Price | $110 |
Start with the original price. Multiply it by the tax rate divided by 100. Then add that result to the original price. Simple.
B) Remove Tax (Inclusive Price)
Use this when you have a total price that already includes tax and need to find the original amount.
Formula:
Original Price = Final Price ÷ (1 + Tax Rate ÷ 100)
Tax Amount = Final Price − Original PriceExample:
| Field | Value |
|---|---|
| Final Price | $110 |
| Tax Rate | 10% |
| Original Price | $100 |
| Tax Amount | $10 |
Divide the total price by 1 plus the rate. This gives you the pre-tax amount. Subtract to find the tax portion.
How to Use the GST / VAT Calculator
Step 1 — Enter the Amount
Type in your price or total amount in the input field.
Step 2 — Enter the Tax Rate
Add the tax percentage (e.g., 10%, 15%, 20%).
Step 3 — Select Tax Type and Mode
Choose GST or VAT. Then pick your calculation mode — Add Tax (exclusive) or Remove Tax (inclusive).
Step 4 — View Your Results
The tool instantly shows your tax amount and the final or net price.
Why Use a GST / VAT Calculator?
- Save time — get results in seconds, not minutes
- Avoid manual errors — no more miscalculated invoices
- Works both ways — add tax or extract tax from a total
- Supports GST and VAT — useful for global users
- Perfect for businesses — speed up billing and invoicing
- No login needed — open and use immediately
- Free forever — no hidden fees or subscriptions
Related Calculators
Frequently Asked Questions
What is GST and how is it different from VAT?
GST (Goods and Services Tax) and VAT (Value Added Tax) are both consumption taxes. GST is used in countries like Australia, India, and Canada. VAT is common in the UK, EU, and many others. They work the same way mathematically — a percentage added to the sale price.
How do I calculate GST on a price?
Use this gst calculator to do it instantly. Or manually: multiply the price by the tax rate and divide by 100. Add that to the original price for the final total.
What is the difference between inclusive and exclusive tax?
Exclusive tax means the price shown does NOT include tax yet. You add tax on top.
Inclusive tax means the price shown already HAS tax in it. You remove tax to find the original.
Is this GST calculator accurate?
Yes. The tool uses standard tax formulas used by accountants and businesses worldwide. As long as you enter the correct price and rate, the result will be accurate.
Can I use this calculator on my phone?
Absolutely. This vat calculator online is fully mobile-friendly. It works on all screen sizes — phone, tablet, or desktop — with no app download required.
Can businesses use this tool for invoicing?
Yes. Many freelancers and small business owners use a gst calculator online to quickly verify tax amounts before sending invoices. It’s especially useful when billing clients in different tax brackets.