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GST Calculator

Calculate GST amount, add or remove GST from any price.

₹
%

Results

GST Amount₹1,800
Price Including GST₹11,800
Price Excluding GST (from incl.)₹8,474.58
CGST₹900
SGST₹900
Breakdown
Base Price
₹10,000
GST
₹1,800
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What is GST?

GST (Goods and Services Tax) is India's comprehensive indirect tax that replaced a complex web of multiple taxes — including VAT, excise duty, service tax, CST, and various cesses — on July 1, 2017. It is a destination-based tax levied on the supply of goods and services at every stage of the production and distribution chain.

GST is levied at four main slab rates: 5% (essential items like packaged food, economy flight tickets), 12% (processed food, mobile phones, business class flights), 18% (most services, restaurants, IT products, consumer electronics), and 28% (luxury goods, cars, tobacco, aerated drinks). Some items like fresh vegetables, milk, bread, and healthcare services are exempt (0% GST).

This GST calculator helps you instantly calculate the GST component of any amount — whether you need to add GST to a base price for creating invoices or extract GST from an inclusive price to know the pre-tax cost. It also shows the CGST/SGST split for intra-state transactions and IGST for inter-state transactions.

Understanding GST is essential for anyone running a business in India. Businesses with annual turnover exceeding ₹40 Lakhs (₹20 Lakhs for services) must register for GST and file returns (GSTR-1 monthly/quarterly, GSTR-3B monthly). The Input Tax Credit (ITC) mechanism allows businesses to claim credit for GST paid on purchases against GST collected on sales, ensuring tax is effectively paid only on value addition.

Need to calculate other taxes? Try our Income Tax Calculator for personal tax or TDS Calculator for tax deducted at source.

Formula

How to calculate GST:

To add GST (calculate GST-inclusive price): GST Amount = Base Price × GST Rate / 100 Total Price with GST = Base Price + GST Amount

To remove GST (find base price from GST-inclusive price): Base Price = GST-inclusive Price / (1 + GST Rate / 100) GST Amount = GST-inclusive Price − Base Price

Worked Example — Adding 18% GST on ₹10,000: GST Amount = ₹10,000 × 18/100 = ₹1,800 CGST (9%) = ₹900 SGST (9%) = ₹900 Total Price = ₹10,000 + ₹1,800 = ₹11,800

Worked Example — Extracting 18% GST from ₹11,800: Base Price = ₹11,800 / 1.18 = ₹10,000 GST Amount = ₹11,800 − ₹10,000 = ₹1,800

GST Split: - Intra-state (within same state): CGST = half + SGST = half - Inter-state (different states): IGST = full GST amount - Imports: IGST = full amount + customs duty

How to use this GST Calculator?

1. Enter the Amount: Type the base price (without GST) or the MRP/invoice amount (with GST included).

2. Select GST Rate: Choose the applicable rate. Common rates: 5% for essential goods, 12% for processed items, 18% for services and electronics, 28% for luxury/sin goods.

3. Read Results: The calculator instantly shows GST amount, price with GST, price without GST, and the CGST/SGST breakdown.

Common GST rates you should know: - Restaurant food (non-AC): 5% - Restaurant food (AC): 5% (no ITC) - Mobile phones: 12% - Software & IT services: 18% - Movie tickets under ₹100: 12% - Movie tickets over ₹100: 18% - Gold & jewelry: 3% - Cars: 28% + cess (1-22%) - Residential rent: Exempt

Frequently asked questions

What is the GST rate for software and IT services?
Software services, SaaS products, IT consulting, web development, app development — all are taxed at 18% GST under HSN/SAC code 998314. This applies to both domestic and exported services (exports are zero-rated with refund of ITC).
What is the difference between CGST, SGST, and IGST?
CGST (Central GST) and SGST (State GST) are charged in equal halves on transactions within the same state. IGST (Integrated GST) is charged on transactions between two different states. The total tax rate is the same — only the split differs. Example: 18% GST intra-state = 9% CGST + 9% SGST. 18% GST inter-state = 18% IGST.
Is GST applicable on rent?
Commercial property rent attracts 18% GST. Residential property rent paid by a business entity for employee housing attracts 18% GST (with ITC). Residential rent paid by individuals for personal use is exempt from GST.
When do I need to register for GST?
GST registration is mandatory when annual turnover exceeds ₹40 Lakhs for goods (₹20 Lakhs in special category states) or ₹20 Lakhs for services (₹10 Lakhs in special category states). E-commerce sellers must register regardless of turnover.
What is Input Tax Credit (ITC)?
ITC allows you to reduce GST paid on purchases (inputs) from GST collected on sales (output). For example, if you collect ₹18,000 GST on sales and pay ₹12,000 GST on purchases, you only remit ₹6,000 to the government. ITC is the backbone of the GST system and eliminates cascading taxes.
How is GST different from the old VAT system?
GST replaced 17 different taxes (VAT, excise, service tax, CST, entertainment tax, etc.) with a single unified tax. Key benefits: eliminates cascading tax (tax on tax), creates a common national market, simplifies compliance with one registration and one return, and enables seamless ITC across states.
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