In India, GST on imports is levied as Integrated GST (IGST) on the cumulative value of assessable value (CIF) plus Basic Customs Duty (BCD) plus Social Welfare Surcharge (SWS). The total customs liability = BCD + SWS + IGST + Cess (if applicable). Import GST is not calculated on the CIF value alone — it is calculated on the assessable value, which itself includes BCD and SWS.
Under Section 5 of the IGST Act, 2017, inter-state and import supplies attract IGST. The customs duty calculation is governed by the Customs Act, 1962 and the Customs Tariff Act, 1975. Everything below applies to goods imported through any port, airport, or land customs station in India.
What Goes Into Import Duty
The total customs liability on an import is:
BCD + SWS + IGST + Cess (if applicable)
Four components, stacked in a specific order. The sequence matters — each component becomes part of the base for the next.
Assessable Value (CIF)
The Assessable Value is the transaction value of the goods plus insurance and freight, converted to Indian Rupees at the CBIC-notified exchange rate on the date you file the Bill of Entry. It does not include customs duty or taxes.
This figure forms the base for Basic Customs Duty. Under Rule 3 of the Customs Valuation Rules, 2007, certain additions — loading charges, unloading costs — may apply to the transaction value. If the declared CIF looks suspiciously low compared to similar goods, customs may invoke a risk-based reassessment.
Basic Customs Duty (BCD)
BCD is charged under Section 12 of the Customs Act, 1962, read with Section 3 of the Customs Tariff Act, 1975. It is a percentage of the Assessable Value.
BCD rates vary by chapter and heading. Capital goods and raw materials often sit at 5–7.5%; consumer goods and finished products tend to attract 10–20%. Check the CBIC tariff schedule at cbic.gov.in/entities/customsTariff for the authoritative current rates.
One thing to note: BCD isn't always a fixed percentage. Some goods have a minimum specific duty floor or a compound rate structure. Always verify the chapter heading before you calculate.
Social Welfare Surcharge (SWS)
SWS replaced Education Cess and Secondary and Higher Education Cess on all imported goods from 2nd February 2018, via the Finance Act, 2018 (Section 110). It is charged at 10% of the BCD amount:
SWS = BCD × 10%
SWS applies to all imports unless a notification specifically exempts a good. Like BCD, it forms part of the assessable base for IGST.
IGST (Integrated GST)
IGST is charged under Section 5 of the IGST Act, 2017. The taxable base is the cumulative value — CIF + BCD + SWS. The IGST rate follows the HSN classification of the goods, aligned with the domestic GST rate for that product.
| GST Rate | Typical goods |
|---|---|
| 5% | Some raw materials, agricultural inputs, fertilisers |
| 12% | Intermediate goods, some electronics, processed foods |
| 18% | Most capital goods, machinery, chemicals, electronics |
| 28% | Luxury goods, pan masala, aerated beverages, automobiles above threshold |
The most common error in customs offices: applying IGST directly to CIF, without adding BCD and SWS first. Don't do this.
GST Compensation Cess
Cess applies to specific goods — sin goods, luxury items — to compensate states for GST revenue loss. It sits after IGST in the stack; it is not part of the IGST base.
Compensation Cess ITC can be claimed and utilized against outward cess liability under Section 11 of the GST (Compensation to States) Act, 2017. For motor vehicles, pan masala, aerated drinks, or certain luxury items, the cess paid is creditable under the Act.
How Is the Import GST Calculation Done Step by Step
Step 1 — Find the Assessable Value
Take the CIF (Cost, Insurance, Freight) in INR, converted at the CBIC-notified exchange rate on the Bill of Entry filing date.
Step 2 — Calculate BCD
BCD = CIF × BCD Rate (%)
Step 3 — Calculate SWS
SWS = BCD × 10%
Step 4 — Build the IGST base
IGST Base = CIF + BCD + SWS
Step 5 — Calculate IGST
IGST = IGST Base × IGST Rate (%)
Step 6 — Add Cess if it applies
Cess is product-specific. Check the GST Compensation Cess schedule for the heading.
Step 7 — Total customs liability
Total Customs Liability = BCD + SWS + IGST + Cess
What Are the Worked Examples of Import GST Calculation
Example 1: Industrial Machinery Parts
- CIF Value: Rs 5,00,000
- BCD Rate: 7.5%
- IGST Rate: 18%
- Cess: Nil
| Step | Calculation | Amount |
|---|---|---|
| CIF | — | Rs 5,00,000 |
| BCD | Rs 5,00,000 × 7.5% | Rs 37,500 |
| SWS | Rs 37,500 × 10% | Rs 3,750 |
| IGST Base | Rs 5,00,000 + Rs 37,500 + Rs 3,750 | Rs 5,41,250 |
| IGST | Rs 5,41,250 × 18% | Rs 97,425 |
| Total Customs Liability | — | Rs 1,38,675 |
Total landed cost = Rs 5,00,000 + Rs 1,38,675 = Rs 6,38,675
Example 2: Bluetooth Audio Equipment (with Cess)
- CIF Value: Rs 2,00,000
- BCD Rate: 20%
- IGST Rate: 12%
- Cess: 10% on audio equipment (illustrative; verify current schedule)
| Step | Calculation | Amount |
|---|---|---|
| CIF | — | Rs 2,00,000 |
| BCD | Rs 2,00,000 × 20% | Rs 40,000 |
| SWS | Rs 40,000 × 10% | Rs 4,000 |
| IGST Base | Rs 2,00,000 + Rs 40,000 + Rs 4,000 | Rs 2,44,000 |
| IGST | Rs 2,44,000 × 12% | Rs 29,280 |
| Cess | Rs 2,44,000 × 10% | Rs 24,400 |
| Total Customs Liability | — | Rs 97,680 |
Total landed cost = Rs 2,00,000 + Rs 97,680 = Rs 2,97,680
Example 3: Refined Sunflower Oil
- CIF Value: Rs 1,00,000
- BCD Rate: 5%
- IGST Rate: 5%
- Cess: Nil
| Step | Calculation | Amount |
|---|---|---|
| CIF | — | Rs 1,00,000 |
| BCD | Rs 1,00,000 × 5% | Rs 5,000 |
| SWS | Rs 5,000 × 10% | Rs 500 |
| IGST Base | Rs 1,00,000 + Rs 5,000 + Rs 500 | Rs 1,05,500 |
| IGST | Rs 1,05,500 × 5% | Rs 5,275 |
| Total Customs Liability | — | Rs 10,775 |
Total landed cost = Rs 1,00,000 + Rs 10,775 = Rs 1,10,775
Which GST Rate Applies to My Import
The rate depends on the HSN code. The table below shows how rates map across categories:
| GST Rate | Base goods examples | Notes |
|---|---|---|
| 5% | Crude oils, some grains, spices in primary form, fertilisers, raw cotton | Often nil or zero BCD as well |
| 12% | Electronics components, processed foods, specified chemicals, watches below Rs 75,000 | BCD typically 5–10% |
| 18% | Machinery, automotive parts, chemicals, furniture, most industrial inputs | Most common rate for capital goods and manufacturing inputs |
| 28% | Luxury goods, pan masala, aerated drinks, automobiles above Rs 10 lakh, cigarettes | Often carries additional compensation cess |
GST Council updates these rates. Check the current CBIC GST Rate Schedule at cbic-gst.gov.in before calculating — last year's rate may not be this year's rate.
How Does Input Tax Credit Work on Import GST
Can you claim ITC on the IGST paid at customs? Yes — with conditions.
Under Section 16(1) of the CGST Act, 2017, every registered person is entitled to ITC on inputs, input services, and capital goods. Import GST qualifies as tax paid on inputs and is eligible for ITC, provided:
- You are GST-registered (mandatory or voluntary both qualify).
- You have the customs challan from ICEGATE — this serves as your ITC document, replacing the supplier's tax invoice for imports.
- The imported goods are used for taxable business outputs.
- The import is not part of a round-tripping or fake invoice scheme — if it is, ITC will be denied and penalties apply under Section 122 of the CGST Act.
How to reconcile customs IGST in GSTR-3B
In GSTR-3B, under "Tax paid on imports," enter the IGST amount. The customs challan from ICEGATE carries the following fields for reconciliation: Port Code (6 alphanumeric characters) + Bill of Entry Number (7 digits) + Date of filing. The system validates this against ICEGATE records. Do not enter IGST under "IGST on inland transactions" — doing so creates a mismatch between GSTR-2 and GSTR-3B and blocks your ITC claim.
One more thing: GST Compensation Cess is not eligible for ITC. It sits in your cost of goods — there is no offset available.
What Is the Full Landed Cost Beyond Customs Duty
The customs stack is only part of what you actually pay. A complete landed cost model:
Landed Cost = CIF + Basic Customs Duty (BCD) + Social Welfare Surcharge (SWS) + Integrated GST (IGST) + GST Compensation Cess (if applicable) + Port charges (wharfage, handling, landing charges) + CFS charges (if moved to a container freight station) + Transportation from port to warehouse + Customs broker fees + Regulatory compliance costs (FSSAI, BIS, CDSCO if applicable)
For a freight forwarder presenting a complete landed cost to a client, the formula stops at customs duty — port and transport charges are the client's side. But getting the customs stack exactly right is what your client hired you for.
Which tools help cross-check your calculation
- ICEGATE Duty Calculator (icegate.gov.in): The official portal's duty estimation tool, working from the HSN code. Use this to verify your manual calculation before filing.
- CBIC Tariff Search (cbic.gov.in/entities/customsTariff): The authoritative tariff schedule, searchable by chapter and heading. The current 2025-26 version is available as searchable HTML.
- CBIC Exchange Rates (cbic.gov.in/entities/exchange-rates): Daily rates for major currencies. These apply on the Bill of Entry filing date — not the shipment date.
What Mistakes Show Up in Every Customs Office
1. Using the old Education Cess formula
Education Cess and Secondary and Higher Education Cess were replaced by SWS on 6 October 2018. If you're using an online calculator or article that references education cess or SHE cess, it is outdated. SWS at 10% of BCD is what applies now.
2. Applying IGST directly to CIF
The IGST base is CIF + BCD + SWS. Many calculators built for domestic GST don't account for this and give you the wrong number. Always verify the base before calculating IGST.
3. Ignoring anti-dumping duty
Certain goods from specific countries attract anti-dumping duty, determined by the Directorate General of Trade Remedies (DGTR). This is additional to BCD and sits outside the IGST base. Verify per consignment.
4. HSN misclassification by even one digit
A single-digit error in the HSN code can shift the BCD rate significantly — say from 5% to 20%. That flows through SWS, the IGST base, and IGST, compounding the error. Verify the classification before you calculate anything.
5. Missing commodity-specific cess
Agricultural products may attract Agriculture Infrastructure and Development Cess (AIDC), for example. These vary by commodity and are updated through finance bills and notifications. Always check the current finance act alongside the tariff schedule.
Which Tools and Resources Help With Import Duty Calculation
- ICEGATE Portal: icegate.gov.in — e-payment, Bill of Entry filing, challan generation
- CBIC Customs Tariff: cbic.gov.in/entities/customsTariff — all chapters, all rates
- CBIC Exchange Rates: cbic.gov.in/entities/exchange-rates — daily rates
- DGFT: dgft.gov.in — import policy, Restricted List, Certificate of Origin, FTA verification
- GST Council: gstcouncil.gov.in — rate notifications and amendments
- CBIC GST Rate Schedule: cbic-gst.gov.in/gst-goods-services-rates.html
Frequently Asked Questions
Is IGST applicable on all imports into India?
Yes. Under Section 5 of the IGST Act, 2017, IGST is levied on all goods imported into India. The rate depends on the HSN classification. Specific exemptions apply to certain goods — life-saving equipment, scientific instruments — but there is no general exemption.
Can I claim input tax credit on customs IGST?
Yes. IGST paid at customs qualifies for ITC under Section 16(1) of the CGST Act, 2017, subject to normal conditions: you must be GST-registered, the goods must be used for taxable business outputs, and the customs challan must be reconciled in GSTR-3B using the Port Code, Bill of Entry Number, and Date from the ICEGATE challan. Compensation Cess ITC can be claimed under Section 11 of the GST (Compensation to States) Act, 2017.
What is the difference between BCD and IGST?
BCD is a customs duty under the Customs Act, 1962 and Customs Tariff Act, 1975 — it applies to imported goods only. IGST is a tax under the IGST Act, 2017, on the supply of goods. BCD is calculated on the CIF value; IGST is calculated on CIF + BCD + SWS. BCD may be reduced or eliminated under India's Free Trade Agreements for goods originating from FTA partner countries. IGST rates are uniform regardless of origin (subject to anti-dumping provisions).
Is Social Welfare Surcharge applicable on all imports?
Yes, with very limited exceptions. SWS at 10% of BCD applies to all imported goods unless a customs notification specifically exempts them. It was introduced via the Finance Act, 2018 to replace Education Cess and Secondary and Higher Education Cess, effective 2nd February 2018, and applies to both canalised and non-canalised imports.
How is GST calculated on import of services?
For imported services, the recipient pays IGST under reverse charge (Section 5(1), IGST Act). The valuation is the open market value of the service. There is no BCD or SWS — services are not goods. IGST on services is declared in GSTR-3B and paid as part of normal tax liability. ITC is available under the same conditions as goods.
What happens if I misclassify HSN and underpay GST?
Under Section 28 of the Customs Act, 1962, misclassification is an offence. Consequences include differential duty demand, interest on the shortfall, penalties under Sections 112 or 113, and in cases of deliberate mis-declaration, prosecution under Section 132. If customs reassesses your Bill of Entry, you will receive a demand notice for the differential BCD, SWS, IGST, and cess, plus interest from the date of original filing.
