What is the HSN code for GST?

HSN (Harmonized System of Nomenclature) codes are 4 to 8 digit codes used to classify goods under GST. They standardize product categorization across India. For example, HSN 6204 for women's clothing, HSN 8471 for computers. Services use SAC (Service Accounting Codes). Correct HSN/SAC codes are mandatory on GST invoices.

When was GST introduced in India?

GST was introduced in India on July 1, 2017. It replaced multiple indirect taxes like VAT, Service Tax, Excise Duty, Octroi, and CST. The GST Council, chaired by the Union Finance Minister, decides GST rates and rules. This was the biggest tax reform in India since independence, creating a "One Nation, One Tax" system.

How do I file GST returns?

GST returns in India are filed online through the GST Portal (www.gst.gov.in). Common returns include GSTR-1 (outward supplies), GSTR-3B (summary return), and GSTR-9 (annual return). Regular businesses file monthly/quarterly returns. The due date varies by turnover. Late filing attracts interest at 18% per annum and late fees.

What is the HSN code for GST?

HSN (Harmonized System of Nomenclature) codes are 4 to 8 digit codes used to classify goods under GST. They standardize product categorization across India. For example, HSN 6204 for women's clothing, HSN 8471 for computers. Services use SAC (Service Accounting Codes). Correct HSN/SAC codes are mandatory on GST invoices.

When was GST introduced in India?

GST was introduced in India on July 1, 2017. It replaced multiple indirect taxes like VAT, Service Tax, Excise Duty, Octroi, and CST. The GST Council, chaired by the Union Finance Minister, decides GST rates and rules. This was the biggest tax reform in India since independence, creating a "One Nation, One Tax" system.

How do I file GST returns?

GST returns in India are filed online through the GST Portal (www.gst.gov.in). Common returns include GSTR-1 (outward supplies), GSTR-3B (summary return), and GSTR-9 (annual return). Regular businesses file monthly/quarterly returns. The due date varies by turnover. Late filing attracts interest at 18% per annum and late fees.

GST Calculator India - Free Online GST Calculator 2026

GST Calculator India: Calculate GST Amount Online Free

Our GST calculator India is a free online tool that helps you compute GST amounts for any product or service. Whether you need to calculate GST exclusive (adding GST to a base price) or GST inclusive (removing GST from a total price), this calculator provides instant results with a full CGST/SGST breakdown.

The Goods and Services Tax (GST) is a comprehensive indirect tax levied on the supply of goods and services across India. Since its introduction on July 1, 2017, GST has replaced multiple taxes including VAT, Service Tax, Excise Duty, and CST. Understanding your GST liability is essential for businesses, consumers, and tax compliance.

How to Use the GST Calculator

Select GST Mode: Choose "GST Exclusive" if the price does not include GST, or "GST Inclusive" if the price already includes GST.
Enter the Amount: Input the base price (exclusive mode) or total price (inclusive mode).
Select GST Rate: Choose from 5%, 12%, 18%, or 28% — the standard GST slabs in India.
Click Calculate: Get instant GST amount, total price, and CGST/SGST breakdown.

How GST is Calculated: The Formula

The GST calculation depends on whether the price is exclusive or inclusive of GST:

GST Exclusive Calculation (Add GST)

GST Amount = Base Price × (GST Rate ÷ 100)
Total Price = Base Price + GST Amount

Example: Product priced at ₹1,000 with 18% GST
GST Amount = 1,000 × 0.18 = ₹180
Total Price = 1,000 + 180 = ₹1,180
CGST = ₹90 (50%), SGST = ₹90 (50%)

GST Inclusive Calculation (Remove GST)

Base Price = Total Price ÷ (1 + GST Rate ÷ 100)
GST Amount = Total Price - Base Price

Example: You paid ₹1,180 for a product with 18% GST
Base Price = 1,180 ÷ 1.18 = ₹1,000
GST Amount = 1,180 - 1,000 = ₹180

GST Rates in India: Complete Breakdown

India has a four-tier GST structure with the following slabs:

0% (Nil-rated): Fresh fruits, vegetables, milk, eggs, bread, salt, newspapers, and healthcare services.
5%: Essential items — sugar, tea, coffee (excluding instant), spices, fertilizer, life-saving drugs, railway tickets.
12%: Processed food, mobile phones, computers, umbrellas, Ayurvedic medicines, hotel rooms under ₹1,000.
18%: Most goods and services — IT services, software, restaurant bills (non-AC), hotel rooms ₹1,000-₹2,500, footwear over ₹500.
28%: Luxury items — cars, motorcycles, tobacco products, aerated drinks, casino gambling, hotel rooms over ₹7,500.

CGST, SGST, and IGST Explained

GST is divided into three components based on the nature of the transaction:

CGST (Central GST): Collected by the Central Government for intra-state sales. Equals half of the total GST rate.
SGST (State GST): Collected by the State Government for intra-state sales. Equals the other half of the total GST rate.
IGST (Integrated GST): Collected by the Central Government for inter-state sales and imports. Equals the full GST rate.

For an 18% GST intra-state transaction: CGST = 9%, SGST = 9%. For inter-state: IGST = 18%.

Who Needs to Register for GST?

GST registration is mandatory if your aggregate turnover exceeds ₹20 lakhs (₹10 lakhs for special category states like Jammu & Kashmir, Northeast states). Businesses engaged in inter-state supply, e-commerce operators, and casual taxable persons must register regardless of turnover. Voluntary registration is also available.

GST on Different Products and Services

Mobile Phones: 18% GST (increased from 12% in 2020)
Restaurant Bills: 18% GST (non-AC), 5% (AC restaurants without ITC claim)
Gold: 3% on gold value + 5% GST on making charges
Electricity: Exempt from GST (electricity duty is separate)
Petrol/Diesel: Not under GST (state VAT applies)
Real Estate: 5% GST on affordable housing, 12% on non-affordable
IT Services: 18% GST (software development, IT consulting)
Hotels: 12-28% depending on room tariff

Why Use CalculatorForAll GST Calculator?

Dual Mode: Both exclusive and inclusive GST calculations.
All Rates: Supports 5%, 12%, 18%, and 28% GST slabs.
CGST/SGST Split: Automatic 50-50 breakdown for intra-state transactions.
100% Free: No registration, no hidden charges, unlimited use.
Privacy First: All calculations in your browser — no server data transfer.
Mobile Friendly: Works perfectly on smartphones and tablets.
Instant Results: Get accurate GST calculations in real time.

Frequently Asked Questions

How do I calculate GST amount?

To calculate GST amount: GST Amount = Original Price × (GST Rate ÷ 100). For example, on a ₹1,000 product with 18% GST: 1,000 × 0.18 = ₹180 GST. Total price including GST = ₹1,180. Exclusive GST means GST is added to the base price. Our GST calculator handles both inclusive and exclusive calculations instantly.

What is GST inclusive and GST exclusive?

GST Exclusive means the displayed price does not include GST — GST is added at checkout. Price = Base Price + GST. GST Inclusive means the displayed price already includes GST. To find the base price from an inclusive price: Base Price = Total ÷ (1 + GST%/100). For ₹1,180 at 18% GST: Base = 1,180 ÷ 1.18 = ₹1,000.

How do I calculate reverse GST?

Reverse GST calculation finds the original price before GST was added. Formula: Original Price = Total Price ÷ (1 + GST Rate/100). Example: You paid ₹1,180 for an item with 18% GST. Original Price = 1,180 ÷ 1.18 = ₹1,000. GST amount = 1,180 - 1,000 = ₹180. This is also called GST backward calculation.

What are the GST rates in India?

India has four main GST slabs: 5% (essential items like sugar, tea, spices), 12% (processed food, computers, mobile phones), 18% (most goods and services like IT services, restaurant bills, hotel rooms), and 28% (luxury items like cars, tobacco, aerated drinks). Some items like fresh vegetables and milk are exempt (0% GST).

How is CGST and SGST calculated?

For intra-state transactions (within the same state), GST is split equally into CGST (Central GST) and SGST (State GST). For 18% GST, CGST = 9% and SGST = 9%. The total GST rate is divided equally between central and state governments. Our GST calculator shows the CGST and SGST breakdown automatically.

What is IGST and how is it different from CGST/SGST?

IGST (Integrated GST) applies to inter-state transactions (between states) and imports. Unlike CGST + SGST which are two separate taxes, IGST is a single tax collected by the central government. The IGST rate equals the total GST rate (e.g., 18% IGST for an 18% GST item). The importing state later claims its share.

How do I calculate GST on a bill?

To calculate GST on a bill: identify the GST rate for each item (5%, 12%, 18%, or 28%), calculate GST for each item using (Price × Rate/100), sum up all GST amounts, and add to the total. For restaurant bills: 18% GST is common (9% CGST + 9% SGST within a state). Our GST calculator simplifies this process.

What is the GST on restaurant bills?

The GST on restaurant bills in India is 18% for non-AC restaurants (9% CGST + 9% SGST). For AC restaurants and those in hotels, the rate is also 18%. However, restaurant bills in 5-star hotels may attract 28% GST. Alcohol is not under GST and is taxed separately by state governments.

What is GST on mobile phones?

GST on mobile phones in India is 18% (effective from 2020). Earlier it was 12%. The 18% GST applies to all smartphones and feature phones. For example, a ₹15,000 mobile phone attracts GST of ₹2,700, making the total ₹17,700. The GST is split as 9% CGST + 9% SGST for intra-state purchases.

How do I calculate GST on rent?

GST on residential rent is exempt (0% GST). However, GST on commercial rent is 18% (9% CGST + 9% SGST). If you rent out a commercial property for ₹50,000/month, GST = 50,000 × 0.18 = ₹9,000. Total rent = ₹59,000. GST registration is required if the aggregate turnover exceeds ₹20 lakhs.

What is the GST on gold?

GST on gold in India is 3% on the value of gold plus 5% GST on making charges. For example, if gold worth ₹50,000 has making charges of ₹2,000: GST = (50,000 × 0.03) + (2,000 × 0.05) = 1,500 + 100 = ₹1,600. Kerala and Pondicherry may have different rates due to state-specific rules.

How do I check if GST is included or excluded?

MRP (Maximum Retail Price) always includes GST — it is GST inclusive. However, B2B invoices often show GST exclusive prices. E-commerce platforms may show both. If a price says "+ GST", it is exclusive. If it says "MRP incl. of all taxes", it is inclusive. Our GST calculator has both modes to handle either scenario.

GST Calculator India