GST Calculator

Add or remove GST from amounts with support for multiple tax rates. Calculate GST quickly and accurately for your business needs

Calculator

Result

Enter amount and click Calculate to see the GST breakdown

How to Use the GST Calculator

Our GST (Goods and Services Tax) calculator is designed to help businesses and individuals calculate GST accurately and efficiently. Whether you need to add GST to a base price or remove GST from a total amount to find the base price, this tool provides instant, accurate calculations for all GST rates currently in use in India.

Using the calculator is simple:

  1. Select Calculation Type: Choose whether you want to add GST to a base amount or remove GST from a total amount that already includes tax.
  2. Enter Amount: Input the monetary value you want to calculate GST for. If adding GST, enter the base price. If removing GST, enter the total price including GST.
  3. Select GST Rate: Choose the applicable GST rate from 5%, 12%, 18%, or 28%. Different products and services fall under different GST slabs.
  4. Calculate: Click the Calculate button to instantly see the base amount, GST amount, and total amount clearly displayed.

The calculator is perfect for e-commerce sellers, retailers, service providers, accountants, and anyone who needs to work with GST calculations regularly. It eliminates manual calculation errors and provides a quick reference for pricing decisions and financial planning.

GST Calculation Formulas

Understanding how GST calculations work is essential for business operations and financial planning. Here are the core formulas used in GST calculations:

Adding GST to Base Amount:
GST Amount = Base Amount × (GST Rate ÷ 100)
Total Amount = Base Amount + GST Amount
Or simply: Total = Base × (1 + GST Rate/100)

Example: If the base price is ₹10,000 and GST rate is 18%

GST Amount = 10,000 × (18 ÷ 100) = ₹1,800

Total Amount = 10,000 + 1,800 = ₹11,800

Removing GST from Total Amount:
Base Amount = Total Amount ÷ (1 + GST Rate/100)
GST Amount = Total Amount - Base Amount

Example: If the total price including GST 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

These formulas ensure accurate GST calculations for invoicing, pricing strategies, tax filing, and financial reporting. The calculator automates these computations, ensuring you always get the correct GST breakdown without manual errors.

Understanding GST Rates and Applications

GST (Goods and Services Tax) was introduced in India in 2017 to replace multiple indirect taxes with a unified tax system. Understanding which GST rate applies to different products and services is crucial for business compliance and pricing decisions.

GST Rate Slabs in India:

5% GST Slab

Applicable to: Essential goods and services including household necessities like sugar, tea, coffee, edible oils, coal, PDS kerosene, domestic LPG, and services like transport, small restaurants without air conditioning.

12% GST Slab

Applicable to: Processed foods, butter, cheese, ghee, dry fruits in packaged form, computers, mobile phones, business class air travel, work contracts, and various services.

18% GST Slab

Applicable to: Most goods and services fall under this standard rate including hair oil, toothpaste, soap, industrial intermediaries, capital goods, restaurants with air conditioning, IT services, and telecommunication services.

28% GST Slab

Applicable to: Luxury and demerit goods including cars, motorcycles above 350cc, aircraft for personal use, aerated drinks, tobacco products, pan masala, and luxury hotels.

Some goods and services are exempt from GST or fall under the 0% slab, including fresh vegetables, fresh fruits, eggs, milk, curd, natural honey, unbranded flour, educational services, and healthcare services. Always verify the current GST rate for your specific product or service category with official government sources or a tax professional.

Frequently Asked Questions

What is GST?

GST (Goods and Services Tax) is a comprehensive indirect tax levied on the supply of goods and services in India. It replaced multiple indirect taxes like VAT, service tax, excise duty, and others, creating a unified tax structure. GST is a destination-based tax, meaning it's collected at the point of consumption rather than the point of origin.

How do I determine which GST rate applies to my product?

GST rates are determined by the HSN (Harmonized System of Nomenclature) code for goods and SAC (Services Accounting Code) for services. You can check the official GST portal or consult with a tax professional to identify the correct rate for your specific product or service. The government periodically updates these classifications.

What's the difference between CGST, SGST, and IGST?

CGST (Central GST) and SGST (State GST) are applied on intra-state transactions (within the same state), with tax revenue split between central and state governments. IGST (Integrated GST) is applied on inter-state transactions (between different states), with the central government collecting the entire tax and later distributing it to the destination state.

Can I claim input tax credit on GST paid?

Yes, registered businesses can claim Input Tax Credit (ITC) on GST paid for business inputs, allowing them to reduce their GST liability. However, ITC is subject to specific conditions and documentation requirements. Certain items and services are not eligible for ITC as specified in GST regulations.

How does GST affect pricing strategies?

Understanding GST is crucial for pricing strategies. Businesses must decide whether to absorb GST or pass it to customers. Use this calculator to determine competitive pricing that accounts for GST while maintaining profit margins. Consider that consumers often compare final prices including taxes.

Do I need to register for GST?

GST registration is mandatory if your annual turnover exceeds ₹40 lakhs for goods suppliers (₹20 lakhs for special category states) or ₹20 lakhs for service providers (₹10 lakhs for special category states). Some businesses must register regardless of turnover, including e-commerce sellers and inter-state suppliers.