GST on Imports: IGST, Customs Duty and How ITC Works

Introduction

If you import goods into India—whether you are a shop owner buying stock from abroad, a manufacturer bringing raw materials, or a reseller on an online platform—you will meet IGST and customs duty at the border. These two taxes work together, and they can be confusing. This article answers one question: how does GST work on imports, what is IGST, what is customs duty, and can you claim input tax credit (ITC) on the import bills you receive?

You will learn the simple rule: IGST applies to all imports, customs duty is a separate tax the government collects when goods enter India, and yes, you can usually claim ITC on the IGST you pay—but not on customs duty itself.

How IGST on Imports Works

When goods cross the border into India, GST becomes payable. But it is not the state GST (SGST) or central GST (CGST) that you see on domestic supplies. Instead, you pay something called Integrated GST, or IGST. Think of it like a single toll booth instead of two separate ones—you pay one tax, not two.

IGST is charged by the customs authority at the port or airport where your goods arrive. You do not buy the goods and then pay GST later; the tax is calculated and collected right there at the border. The rate depends on what you are importing. If you import textiles, the IGST rate might be 5%. If you import electronics, it might be 18%. The customs officer looks up the tax rate for your product and calculates IGST on the imported value (which includes the customs duty itself—we will come back to that).

Here is the key: as an importer, you pay IGST at the border just like you would pay GST on a domestic purchase. The difference is that when you import, there is only one GST—the I part of GST, not S and C separately. This happens because importing is treated as an inter-state supply of goods (from abroad into India).

Customs duty is a separate tax altogether. It is not GST. The government charges customs duty to protect Indian manufacturers and to collect revenue. If you import a phone worth ₹10,000, the government might add 20% customs duty (₹2,000). Then, GST is calculated on the total—the ₹10,000 plus the ₹2,000—and that GST is IGST. So customs duty increases the amount on which GST is calculated.

You can claim ITC on the IGST you paid at the border, which means you get credit for that tax when you file your GST return. But you cannot claim ITC on customs duty. Customs duty is a dead cost—you bear it and that is that. This is important: if you pay ₹2,000 in customs duty and ₹2,160 in IGST, you can claim credit for the ₹2,160 only, not the customs duty.

A simple example

Meet Ramesh. He is a shop owner who imports water bottles from China. He orders 1,000 bottles at ₹5 each, so the invoice value is ₹5,000. When the shipment arrives at the Mumbai port, the customs officer calculates customs duty at 10%. That is ₹500. Now the dutiable value (the amount on which IGST is charged) is ₹5,000 + ₹500 = ₹5,500.

The IGST rate on water bottles is 5%. So Ramesh pays IGST of 5% on ₹5,500 = ₹275. Total cost to Ramesh: ₹5,000 (goods) + ₹500 (customs duty) + ₹275 (IGST) = ₹5,775.

When Ramesh files his GST return, he has a bill from customs showing the IGST of ₹275. He can claim this as input tax credit. It reduces his total GST liability for that month. But the ₹500 customs duty? That stays with Ramesh. He cannot claim it as ITC. So his real cost for these bottles is ₹5,500 (goods + customs) + ₹275 IGST, minus the ₹275 ITC he claims = ₹5,500 net cost.

Now imagine Ramesh sells 500 of these bottles to other shops at ₹15 each. He collects GST at 5% = ₹375. His GST bill is ₹375 output minus ₹275 input credit = ₹100 net GST to the government. This is how ITC works: you collect GST from your customers and claim credit for GST you paid on purchases. The difference is what you remit to the tax department.

Who this applies to

This matters for you if:

• You import goods directly from abroad (anything: fabric, machinery, electronics, toys) and resell or use them in your business.
• You are a registered GST dealer (turnover above ₹40 lakh for goods or ₹20 lakh for services) and you want to understand ITC on your import bills.
• You use an import agent or clearance forwarder who sends you a customs bill and you need to know if you can claim ITC.
• You have a registered business with inter-state or international transactions and import occasionally or regularly.

If you do not import and only buy goods domestically, this topic is less urgent for you—but understanding IGST helps you read your bills better.

If this is you: keep your import bills (the customs bill and the IGST receipt) safely and share them with your accountant when filing GST returns.

Check your GST position

If your business is importing goods, you need to be GST registered. The threshold is ₹40 lakh aggregate turnover in a financial year for goods. If you are importing to resell, your combined turnover (domestic sales + imports) matters. Check your turnover on the free GST registration threshold checker at gsthelp.in. The tool shows you whether you need to register and what your position is.

Conclusion

Here is the simple takeaway: when you import goods into India, you pay IGST at the border (based on the goods value plus customs duty). You can claim ITC on that IGST. Customs duty is separate and you cannot claim ITC on it—it is a cost you bear. Keep your import bills, match them to your purchase invoices, and claim the IGST credit in your GST return.

Every rupee of IGST you claim as credit reduces your net GST bill. But only claim IGST, not customs duty. This is informational only. Confirm the current import GST rules, applicable rates for your product, and ITC eligibility with a qualified CA or on the GST portal at gst.gov.in.