What is GST?
GST (Goods and Services Tax) is a comprehensive indirect tax levied on the supply of goods and services in India. Introduced on 1st July 2017, it replaced multiple cascading taxes like VAT, Service Tax, Excise Duty, and CST with a single unified tax structure. GST follows a four-tier rate structure — 5%, 12%, 18%, and 28% — with essential items like fresh food, healthcare, and education being exempt at 0%.
How to Calculate GST?
There are two common GST calculations:
Adding GST (Exclusive to Inclusive): If you know the base price and want to find the total price including GST, use the formula: GST Amount = Base Price × (GST Rate ÷ 100), and Total Price = Base Price + GST Amount. For example, 18% GST on ₹1,00,000 gives ₹18,000 GST and ₹1,18,000 total.
Removing GST (Inclusive to Exclusive): If you have the total price including GST and want to find the base price, use: Base Price = Total Price × 100 ÷ (100 + GST Rate). For example, removing 18% GST from ₹1,18,000 gives a base price of ₹1,00,000.
GST Slabs in India
5% GST: Essential items like packaged food, footwear under ₹1,000, economy class air travel, and small restaurants.
12% GST: Processed food, business class air travel, state-run lotteries, and work contracts.
18% GST: Most goods and services including IT services, financial services, restaurants in hotels, branded garments, and telecom services.
28% GST: Luxury items like automobiles, cement, ACs, dishwashers, aerated drinks, and tobacco products.
Frequently Asked Questions
What are the current GST rates in India?
India has four main GST slabs: 5%, 12%, 18%, and 28%. Essential items like food grains, fresh vegetables, milk, and healthcare are exempt (0% GST). Most commonly used goods and services fall under the 18% slab. Luxury and demerit goods attract the highest rate of 28%, sometimes with an additional cess.
What is the difference between CGST, SGST, and IGST?
For transactions within the same state (intra-state), GST is split equally into CGST (Central GST, collected by the central government) and SGST (State GST, collected by the state government). For transactions between different states (inter-state), IGST (Integrated GST) is charged at the full rate and later settled between the central and state governments.
How do I add GST to a base price?
To add GST to a base price, multiply the base amount by the GST rate and divide by 100. Then add the GST amount to the base price. Formula: Total = Base Price + (Base Price × GST Rate / 100). For example, adding 18% GST to ₹10,000: GST = ₹1,800, Total = ₹11,800.
How do I remove GST from a total price?
To extract the base price from a GST-inclusive amount, divide the total by (1 + GST Rate / 100). Formula: Base Price = Total Price × 100 / (100 + GST Rate). For example, removing 18% GST from ₹11,800: Base = ₹11,800 × 100 / 118 = ₹10,000.
What is reverse charge mechanism in GST?
Under the reverse charge mechanism (RCM), the recipient of goods or services pays the GST directly to the government instead of the supplier. This applies to specific categories of supplies listed by the government and when purchases are made from unregistered dealers exceeding prescribed limits.
Do I need to register for GST?
GST registration is mandatory if your aggregate annual turnover exceeds ₹40 lakhs for goods (₹20 lakhs for special category states) or ₹20 lakhs for services (₹10 lakhs for special category states). E-commerce operators, inter-state suppliers, and certain other categories must register regardless of turnover.
Is GST applicable on all goods and services?
No. Essential items like fresh fruits, vegetables, milk, eggs, bread, salt, and healthcare services are exempt from GST. Petroleum products (petrol, diesel, natural gas), alcohol for human consumption, and electricity are currently outside the GST framework and continue to be taxed under the old regime.
How is GST different from the old tax system?
GST replaced over 17 indirect taxes including VAT, Service Tax, Excise Duty, and CST with a single unified tax. The key improvements are: elimination of cascading tax-on-tax effect, a common national market, simplified compliance through a single return system, and input tax credit across the supply chain.