ONLINE GST CALCULATOR (ADD / REMOVE GST)
Calculation Summary & Tax Breakup
Mode: Adding 18% GST| GST Slab | Tax (GST) | Total Price | Action |
|---|
How to Calculate GST (Formulas & Rules)
The Goods and Services Tax (GST) is a single, destination-based indirect tax levied on the supply of goods and services in India. Whether you are a business owner calculating tax on a product invoice or a customer wanting to extract the base price from an MRP tag, this online GST Calculator computes exact numbers instantly.
1. Formula to Add GST (Exclusive Amount):
When you have a base price and need to add GST to find the final billing amount:
Net Payable Amount = Base Price + GST Amount
Example: For a base amount of ₹10,000 at 18% GST → GST = (10000 × 18) / 100 = ₹1,800. Total = ₹10,000 + ₹1,800 = ₹11,800.
2. Formula to Remove / Extract GST (Inclusive / MRP Amount):
When you have a total price (like MRP or billed amount) and need to find the original pre-tax value and the GST included:
Base / Net Price = Total Amount / (1 + (GST Rate % / 100))
Example: For an MRP of ₹11,800 with 18% GST → Base Price = 11,800 / 1.18 = ₹10,000. GST Amount = 11,800 - 10,000 = ₹1,800.
3. Understanding GST Tax Components in India:
- CGST (Central Goods and Services Tax): Collected by the Central Government on intra-state supplies (50% of the total GST rate).
- SGST (State Goods and Services Tax): Collected by the State Government on intra-state supplies (50% of the total GST rate).
- IGST (Integrated Goods and Services Tax): Collected by the Central Government on inter-state sales, imports, and exports (100% of the rate).
- UTGST (Union Territory GST): Levied in place of SGST in Union Territories without legislatures (e.g. Andaman & Nicobar, Chandigarh, Ladakh).
Official GST Rate Slabs in India (2026 Overview)
| GST Slab | Applicable Goods & Services Examples | CGST + SGST Split |
|---|---|---|
| 0% (Nil) | Fresh fruits, vegetables, milk, curd, salt, flour, newspapers, unbranded grains. | 0% + 0% |
| 3% | Gold, Silver, Platinum jewellery, and precious stones. | 1.5% + 1.5% |
| 5% | Packaged food items, footwear below ₹1000, economy air travel, railway tickets, tea, coffee, edible oil. | 2.5% + 2.5% |
| 12% | Computers, processed food, mobile phones, business class air tickets, readymade garments above ₹1000. | 6% + 6% |
| 18% | IT software, electronics, telecom, restaurant dining, banking, AC hotels, hair oil, toothpaste, most services. | 9% + 9% |
| 28% | Motorcars, luxury goods, cement, aerated drinks, online gaming, tobacco, air conditioners, refrigerators. | 14% + 14% |
GST Inclusive: The product price already includes the tax amount within its MRP tag. You calculate backwards to extract the net cost and tax share (e.g., ₹1180 MRP = ₹1000 base + ₹180 GST).
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