Question 1

What is GST and how is it calculated?

Accepted Answer

GST (Goods and Services Tax) is an indirect tax levied on the supply of goods and services in India. It is calculated as a percentage of the taxable value. For example, at 18% GST on a base price of ₹1,000, the GST amount is ₹180 and the total payable is ₹1,180.

Question 2

How do I calculate GST inclusive price from an MRP?

Accepted Answer

To extract GST from an inclusive price (MRP), use the formula: GST amount = MRP × GST rate / (100 + GST rate). For example, if MRP is ₹1,180 at 18% GST: ₹1,180 × 18 / 118 = ₹180 GST. The base price is ₹1,000. Select "Extract GST" mode in this calculator to do this automatically.

Question 3

What are the current GST slabs in India?

Accepted Answer

India has five GST rate slabs: 0% (essential items like food grains), 5% (basic necessities like edible oil, sugar), 12% (processed food, medicines), 18% (most goods and services, electronics, restaurants) and 28% (luxury goods, automobiles, tobacco). This calculator supports all five slabs.

Question 4

What is the difference between CGST, SGST and IGST?

Accepted Answer

CGST (Central GST) and SGST (State GST) are levied on intra-state transactions, each at half the applicable GST rate. For example, 18% GST = 9% CGST + 9% SGST. IGST (Integrated GST) applies to inter-state transactions at the full GST rate. This calculator shows the total GST amount — your CA can advise on the split.

Question 5

Can I use this GST calculator for reverse calculation?

Accepted Answer

Yes. Switch to "Extract GST" mode and enter the GST-inclusive amount (the total amount including GST). The calculator will compute the original base price and the GST component separately. This is useful when you receive an invoice and need to separate the tax from the total.

Question 6

Is this GST calculator free and accurate?

Accepted Answer

Yes, this GST calculator is completely free and uses the standard percentage formula prescribed by the Indian GST Council. No sign-up is required and all calculations happen in your browser. For official tax filings, always verify with your CA or use the GST portal.

Question 7

What is the GST rate on services?

Accepted Answer

Most services in India attract 18% GST (e.g. telecom, banking, professional services, restaurants with AC). Some services attract 5% (e.g. non-AC restaurants, budget hotels), 12% (e.g. business class air travel, certain construction services) or are exempt (e.g. healthcare, education). Select the appropriate rate in the calculator.

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