Customs duty in India does more than collect revenue at the border — it shapes pricing, sourcing decisions, and whether international trade stays commercially viable. For any business importing into or exporting from India, duties directly affect margin, competitiveness, and risk.

The statutory backbone is the Customs Act, 1962 and the Customs Tariff Act, 1975, administered by the Central Board of Indirect Taxes and Customs (CBIC), which issues tariff notifications and procedural circulars. As trade volumes grow, customs planning has shifted from an afterthought to a core part of supply-chain strategy.

This guide explains India's customs duty structure for 2026: the components and how they stack, how goods are valued, a worked calculation, what changed in the latest budget, and the compliance steps every importer and exporter needs.

The regulatory foundation

India's customs regime rests on two laws from the 20th century but aligns with modern global trade rules. Its valuation methodology follows the World Trade Organization's Agreement on Customs Valuation, which requires authorities to rely on transaction value before any secondary method.

"Customs authorities must first rely on the transaction value — the price actually paid or payable — before applying secondary valuation methods." (World Trade Organization, Agreement on Customs Valuation.)

In practice this means the declared invoice value is the starting point, not the final word. National tariff direction is set annually through the Union Budget administered by the Ministry of Finance, while preferential duty structures sit under the Foreign Trade Policy of the Ministry of Commerce and Industry.

The core components of customs duty

India applies a layered duty structure, so total duty payable rarely consists of a single rate. The table below summarises the main components that combine on a typical import.

Component	Typical basis	Notes
Basic Customs Duty (BCD)	% of assessable (CIF) value	Varies by HS classification
Integrated GST (IGST)	Mirrors domestic GST (5/12/18/28%)	Charged on value + BCD + surcharge
Social Welfare Surcharge	10% of BCD	Now exempt on many cess-bearing lines
Anti-dumping / safeguard duty	Product-specific	Time-bound trade-remedy measures

Basic Customs Duty (BCD)

BCD is levied under the Customs Tariff Act, 1975, and rates vary widely by product classification. Classification follows the World Customs Organization's Harmonized System, and misclassification is one of the most common compliance risks, since even minor errors can change the rate sharply.

Because BCD is the base on which both the surcharge and part of the IGST are computed, getting the rate right matters twice over. An advance ruling on classification, available before importing, can remove this uncertainty for a recurring product and prevent disputes at the port.

Integrated GST (IGST)

Imports also attract IGST, which mirrors the domestic GST rate (commonly 5%, 12%, 18%, or 28%) for comparable goods. Crucially, IGST is calculated on the assessable value plus BCD and surcharge, so the components compound — a point often missed in early cost projections.

Social Welfare Surcharge

The Social Welfare Surcharge is generally 10% of the BCD component. It looks marginal in isolation but adds up on higher-value shipments, though recent budget changes have exempted it on many lines that already bear a cess.

Trade remedy measures

India can impose anti-dumping or safeguard duties where imports are found to injure domestic industry. These are investigated by the Directorate General of Trade Remedies, are product-specific and time-bound, but can substantially raise import costs while in force.

How customs valuation works

Valuation in India begins with the CIF value — cost, insurance, and freight combined. That figure forms the assessable value on which BCD is calculated.

When authorities question a declared invoice value, the WTO sequencing rules apply, and customs work through 5 fallback methods in order:

Transaction value of identical goods
Transaction value of similar goods
Deductive value
Computed value
Residual (fall-back) method

Documentation quality usually decides whether a valuation challenge escalates or resolves quickly, so accurate invoices, contracts, and freight records matter.

Related-party transactions draw particular scrutiny, since customs may suspect the price has been set to lower duty. Importers buying from a parent or affiliated supplier should be ready to demonstrate that the transaction value reflects an arm's-length price, using transfer-pricing studies or comparable transactions.

How to calculate customs duty: a worked example

A simple example shows how the layers compound on a shipment with a CIF value of ₹100,000, 10% BCD, a 10% Social Welfare Surcharge on BCD, and 18% IGST. The table below traces each step.

Step	Basis	Amount (₹)
CIF value	—	100,000
Basic Customs Duty	10% of CIF	10,000
Social Welfare Surcharge	10% of BCD	1,000
Assessable value for IGST	CIF + BCD + SWS	111,000
IGST	18% of 111,000	19,980
Total customs liability	BCD + SWS + IGST	30,980

The landed cost is therefore far higher than the invoice price alone — about 31% more in this case. Modelling this accurately is what separates realistic pricing from margin surprises.

What changed in the 2025-26 Budget

The Union Budget 2025-26, presented on 1 February 2025, simplified India's customs tariff structure significantly. It removed 7 customs tariff rates for industrial goods, leaving only 8 rates including a zero rate, according to the Press Information Bureau.

"The Union Budget 2025-26 proposes to remove seven customs tariff rates for industrial goods, leaving only eight tariff rates including the 'zero' rate." (Press Information Bureau, 2025.)

The budget also limited shipments to a single cess or surcharge, exempting the Social Welfare Surcharge on 82 tariff lines that already bear a cess. On the relief side, it added 36 life-saving drugs to the full BCD exemption list and granted exemptions on capital goods for EV and mobile-phone battery manufacturing, plus several critical minerals — changes detailed by India Briefing.

The direction of travel is clear: a simpler, lower tariff structure that supports domestic manufacturing while easing input costs for priority sectors. For importers, it means duty assumptions built on older tariff schedules should be re-checked, because a line that carried multiple levies a year ago may now sit in a leaner bracket.

The Import Export Code (IEC) requirement

Every commercial importer and exporter must obtain an Import Export Code before trading across borders. The 10-digit IEC is issued through the Directorate General of Foreign Trade's portal.

Without a valid IEC, commercial shipments cannot legally clear customs. It is a one-time registration that underpins all subsequent filings.

The IEC is linked to the business's PAN and increasingly to its GST registration, so keeping these details consistent and current avoids mismatches that can hold up clearance. Small importers and exporters should secure it well before their first shipment, as it is a prerequisite rather than a step that can be completed at the port.

Customs clearance and digital processing

India's clearance system is fully electronic, run 24/7 through the ICEGATE gateway. Bill of Entry submission, document uploads, and duty payment all happen online, removing most of the paper that once slowed clearance.

A risk-based assessment model sorts shipments into 2 broad paths: a facilitation channel that clears with minimal intervention, or examination. Compliance history and product sensitivity are the main factors influencing inspection likelihood, so a clean record speeds clearance.

Speed at this stage has a direct cost. Every extra day a consignment waits adds demurrage and storage charges, which is why importers with strong documentation and accurate self-assessment consistently clear faster and cheaper than those who treat filing as a formality.

Preferential duty under trade agreements

India maintains more than 10 Free Trade Agreements and preferential arrangements that offer reduced or zero tariffs on qualifying goods. To claim them, importers must meet Rules of Origin documentation requirements under the Foreign Trade Policy.

Preferential access can materially change cost competitiveness, especially for manufacturing inputs, but only if the origin paperwork is correct. Errors here can mean losing the concession and paying full duty, sometimes with penalties.

The trade-off is administrative effort versus duty savings. For high-volume or high-tariff inputs, the savings from a single qualifying FTA can outweigh the cost of building the origin-documentation process several times over, making it one of the highest-return areas of customs planning.

Why customs planning matters strategically

Customs efficiency shapes far more than compliance — it affects supply-chain speed and cost predictability. Customs is one of the 6 dimensions the World Bank scores in its Logistics Performance Index, on which India ranked 38th of 139 economies in 2023, and the Bank's trade work consistently links streamlined customs with stronger competitiveness and lower friction.

For companies operating in India, customs should be built into procurement modelling, supplier negotiations, and pricing strategy from the outset. Treating it as a border formality rather than a planning input is where avoidable costs creep in.

As India's trade volumes expand and tariff structures keep evolving with each budget, customs has become a structural business function rather than a procedural checkpoint. The importers and exporters who model duty accurately, classify correctly, and use the concessions available to them will carry a durable cost advantage over those who do not.

Methodology

This guide draws on Indian statutes (the Customs Act, 1962 and Customs Tariff Act, 1975), CBIC, the Ministry of Finance Union Budget documents, the WTO Agreement on Customs Valuation, the World Customs Organization, DGFT, DGTR, and the GST Council, plus reputable reporting on the 2025-26 budget. Quotations reflect the published positions of the cited sources.

Rates, exemptions, and procedures change with each budget and through notifications issued during the year, so figures reflect the position at the time of the publication's last review. Duty calculations are simplified illustrations; actual liability depends on classification, valuation, and applicable notifications. This guide is general information, not legal or tax advice — consult a licensed customs broker or tax professional for specific shipments.

Frequently asked questions

What are the main components of customs duty in India?

The main components are Basic Customs Duty (varies by product), Integrated GST (mirroring domestic GST at 5–28%), and the Social Welfare Surcharge (10% of BCD). Anti-dumping or safeguard duties may also apply to specific products.

How is customs duty calculated?

Duty starts from the CIF (cost, insurance, freight) value. BCD is applied to that, the Social Welfare Surcharge to the BCD, and IGST to the combined value plus BCD and surcharge — so on a ₹100,000 shipment at 10% BCD and 18% IGST, total liability is about ₹30,980.

Do I need an Import Export Code to import or export?

Yes. A 10-digit Import Export Code from the DGFT is mandatory for commercial cross-border trade, and shipments cannot clear customs without one.

What changed for customs in the 2025-26 Budget?

The budget cut customs tariff rates for industrial goods to 8 (including zero), limited shipments to one cess or surcharge (exempting the Social Welfare Surcharge on 82 lines), and added 36 life-saving drugs and battery capital goods to exemptions.

How can importers reduce customs duty legally?

Accurate HS classification, correct valuation, and claiming Free Trade Agreement concessions with proper Rules of Origin documentation are the main legitimate levers. Professional advice helps capture these without compliance risk.

Key takeaways

India's customs regime rests on the Customs Act, 1962 and Customs Tariff Act, 1975, administered by CBIC and aligned with WTO valuation rules.
Duty is layered: Basic Customs Duty, IGST (mirroring 5–28% GST), and a 10% Social Welfare Surcharge, which compound rather than add separately.
On a ₹100,000 CIF shipment at 10% BCD and 18% IGST, total customs liability is about ₹30,980 — roughly 31% over invoice value.
The 2025-26 Budget simplified the structure to 8 tariff rates, limited shipments to one cess/surcharge, and exempted 36 life-saving drugs and battery capital goods.
An Import Export Code is mandatory, clearance runs through ICEGATE, and FTA concessions can cut duty where Rules of Origin are met.

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