Frequently Asked Questions

GST (Goods and Services Tax) is an indirect tax levied on the supply of goods and services in India. It replaced multiple indirect taxes like VAT, service tax, excise duty, etc., and unified them into a single tax system. GST is a destination-based tax, meaning it is levied at the point of consumption.

In India, there are three types of GST:

1. **IGST (Integrated GST)**: Applicable on interstate (between different states) transactions. The entire GST amount is collected as IGST.

2. **CGST (Central GST)**: Applicable on intrastate (within the same state) transactions. Collected by the Central Government.

3. **SGST (State GST)**: Applicable on intrastate transactions. Collected by the State Government. CGST and SGST are each half of the total GST rate.

For example, if the GST rate is 18%, on an intrastate transaction: CGST = 9% and SGST = 9%.

**IGST (Interstate)**: Use when goods/services are supplied between two different states in India. Example: A supplier in Maharashtra sells to a buyer in Karnataka.

**CGST + SGST (Intrastate)**: Use when both the supplier and buyer are in the same state. Example: A supplier in Maharashtra sells to a buyer also in Maharashtra.

Our calculator automatically handles both scenarios when you select the appropriate tax type.

The standard GST rates in India are:

- **0%**: Essential items like food grains, fresh vegetables, etc.
- **5%**: Common household items, essential drugs
- **12%**: Processed foods, computers, mobile phones (some)
- **18%**: Most goods and services (standard rate)
- **28%**: Luxury items, sin goods (cigarettes, alcohol), high-end cars

There are also special rates and exemptions for certain categories.

To calculate GST:

1. **GST Amount** = (Base Amount × GST Rate) / 100
2. **Total Amount** = Base Amount + GST Amount

Example: If base amount is ₹10,000 and GST rate is 18%:
- GST = (10,000 × 18) / 100 = ₹1,800
- Total = ₹10,000 + ₹1,800 = ₹11,800

Our calculator does this automatically - just enter the amount and select the rate!

Reverse GST calculation is used when you know the total amount (including GST) and need to find the base amount and GST separately.

**Formula**: Base Amount = Total Amount / (1 + GST Rate / 100)

Example: If total is ₹11,800 and GST rate is 18%:
- Base Amount = 11,800 / (1 + 18/100) = 11,800 / 1.18 = ₹10,000
- GST Amount = ₹11,800 - ₹10,000 = ₹1,800

Use our Reverse GST Calculator for instant calculations!

GST rates depend on the HSN (Harmonized System of Nomenclature) code for goods or SAC (Services Accounting Code) for services. The rate can vary based on:

- Type of product/service
- Industry classification
- Government notifications
- Special categories (luxury, essential, etc.)

**Best practice**: Check the official GST portal or consult with a tax professional for the exact rate applicable to your specific product or service.

Our calculator provides accurate calculations based on standard GST formulas. However, for official tax filing and critical business decisions, we recommend:

1. Verifying calculations with a certified tax professional
2. Using official government calculators for filing
3. Consulting your accountant for complex scenarios
4. Checking the latest GST notifications and updates

Our tool is designed for quick calculations and reference purposes.

Yes! Our calculator supports both Indian Rupees (₹ INR) and US Dollars ($ USD). Select your preferred currency using the currency selector in the calculator. Note that GST is an Indian tax system, so GST rates apply to INR. For USD, the calculator helps with equivalent tax calculations.

We offer an embeddable widget version of our GST calculator! Visit our widget/embed page or contact us for integration instructions. The widget can be easily embedded using a simple script tag or iframe, allowing your website visitors to calculate GST directly on your site.

Yes, absolutely! Our GST calculator is 100% free to use. There are no hidden charges, no subscriptions, and no sign-up required. You can use it as many times as you need without any restrictions.

No, we don't store any of your calculation data. All calculations are performed locally in your browser. We only store your preferences (like selected currency and tax type) locally on your device for a better user experience. Your privacy is our priority!