Free tax calculator
GST Calculator Online
Simplify Your Taxes Instantly
Work out GST on any price in seconds, with a clear, easy-to-follow breakdown of your results.
Any rate you enterFree, no sign-up
01 / Estimate
Calculate GST
Add tax or take it out
Your estimated results
Example: $1,000.00 before GST at 18%
Enter the GST rate that applies to your purchase and location. Results are rounded to the cent. Nothing you type leaves your browser.
A simple, three-step estimate
- 01Enter the priceBefore tax, or including it
- 02Add the rateThe GST rate that applies
- 03See the breakdownNet price, tax and total
02 / Understand
How GST works
What Is GST?
Goods and Services Tax (GST) is a comprehensive, multi-stage, destination-based tax levied on every value addition. Goods and Services Tax is a single tax on the supply of goods and services, right from the manufacturer to the consumer.
How Is GST Calculated?
GST is calculated using a simple formula:
GST Amount = Original Cost × GST Rate ÷ 100
The total price, including GST can be calculated as:
Total Price=Original Cost+GST Amount
03 / See the math
How the math works
Example Calculation
Let’s say you have an original cost of $500 and the GST rate is 18%. The calculation would be:
GST Amount = 500 × 18 ÷ 100 = $90
Total Price=500+90=$590
04 / Go deeper
GST Rates For Different Categories
GST rates vary for different categories of goods and services. In India, the main GST rates since 22 September 2025 are 5% and 18%, with a special 40% rate for selected luxury and “sin” goods; these replaced the earlier 5%, 12%, 18% and 28% slabs (GST Council, 56th meeting). Other countries use their own GST rates.
Tables For Different Business Types
The tables below show the arithmetic only, using illustrative rates (some are the former 12% and 28% slabs). Check the current rate for your item and country before relying on a figure.
Manufacturers
| Item | Pre-GST Cost | GST Rate (%) | GST Amount | Total Price |
|---|---|---|---|---|
| Raw Materials | $1,000 | 18 | $180 | $1,180 |
| Machinery | $5,000 | 28 | $1,400 | $6,400 |
| Finished Goods | $2,000 | 12 | $240 | $2,240 |
Retailers
| Item | Pre-GST Cost | GST Rate (%) | GST Amount | Total Price |
|---|---|---|---|---|
| Clothing | $1,500 | 12 | $180 | $1,680 |
| Electronics | $3,000 | 18 | $540 | $3,540 |
| Groceries | $500 | 5 | $25 | $525 |
Service Providers
| Service | Pre-GST Cost | GST Rate (%) | GST Amount | Total Price |
|---|---|---|---|---|
| Consulting | $2,000 | 18 | $360 | $2,360 |
| Maintenance | $800 | 12 | $96 | $896 |
| Cleaning Services | $400 | 5 | $20 | $420 |
Understanding GST For Your Business
GST For Manufacturers
Manufacturers are liable to pay GST on the raw materials they purchase and the finished goods they sell. The input tax credit system allows them to claim credit for the GST paid on raw materials against the GST collected on finished goods.
GST For Retailers
Retailers collect GST on the sale of goods to consumers. They can claim the input tax credit for the GST paid on goods purchased from manufacturers or wholesalers.
GST For Service Providers
Service providers charge GST on the services they offer. They can claim the input tax credit for the GST paid on inputs used to provide their services.
05 / Get answers
FAQs
What Is The Difference Between GST And Sales Tax?
GST is a value-added tax applied at each stage of production and distribution, while sales tax is charged only at the point of sale to the end consumer. This ensures that GST captures the value added at each stage, whereas sales tax applies only to the final sale price.
Are There Any Goods Exempt From GST?
Yes, certain essential goods and services are exempt from GST. These include basic food items, educational services, and healthcare services. This exemption helps make crucial goods and services more affordable for consumers.
How Often Do GST Rates Change?
GST rates can change periodically based on government policy and economic conditions. Changes are usually reviewed annually or bi-annually to ensure that the tax system adapts to current financial needs and objectives.