Customs Duty on imported goods

Section 12 of the Customs Act, 1962 is the charging section that creates the entire edifice of customs duty on imports into India. Every importer — whether a one-time consumer bringing in a personal effect or a large manufacturer running a continuous supply chain — operates within this framework, modified each year by the Finance Act. Union Budget 2026 retained the AIDC structure, refreshed select tariff items and continued the GST-customs reconciliation drive.

What Section 12 imposes

Section 12(1) provides that duties of customs shall be levied at such rates as may be specified under the Customs Tariff Act, 1975, on goods imported into, or exported from, India. The taxable event is import; the goods become liable to duty when they cross into India's customs territory. The rate is determined by classification under the Harmonised System (HS) tariff and the country of origin where preferential trade agreements apply.

Components of customs duty in 2026

• Basic Customs Duty (BCD) — primary rate notified per tariff heading.
• Agriculture Infrastructure and Development Cess (AIDC) — on specified items.
• Social Welfare Surcharge (SWS) — typically 10% of BCD.
• Integrated GST (IGST) under Section 3(7) of the CTA — at the rate applicable to like domestic goods.
• GST Compensation Cess on demerit goods under Section 3(9).
• Anti-dumping duty, countervailing duty and safeguard duty where notified.
• Health cess on specific items as introduced.

Valuation under Section 14

Customs value is the transaction value — price paid or payable for the goods when sold for export to India — adjusted for freight, insurance and other costs as prescribed under the Customs Valuation Rules, 2007. Where transaction value cannot be accepted (e.g., related-party pricing, undervaluation), the rules sequentially apply identical-goods, similar-goods, deductive and computed methods. Disputes here remain the single largest source of customs litigation.

Classification under the Customs Tariff Act

1. The HS classification under the First Schedule determines the BCD rate.
2. General Rules for Interpretation guide ambiguous classifications.
3. Section Notes and Chapter Notes are statutorily binding.
4. Advance Ruling under Section 28-I is available for binding pre-import classification certainty.
5. Mis-classification leads to short-levy proceedings under Section 28 and penalties under Section 114A/114AA.

Exemptions and concessions

Notifications under Section 25(1) provide BCD exemptions or concessional rates linked to end-use, project imports, EOU/SEZ status and free-trade agreements. Importers must satisfy procedural conditions — Form A-1 declarations, end-use bonds, post-import audits — to retain benefits. Failure exposes them to recovery with interest and penalty, often years after import.

Procedural compliance

• Filing of Bill of Entry (Form-I, II or III) on ICEGATE before or within prescribed time after import.
• Self-assessment under Section 17 with risk-based facilitation by RMS.
• Payment of duty through electronic cash ledger.
• Authorised Economic Operator (AEO) accreditation for expedited clearances.
• Post-clearance compliance audit and reconciliation of GSTR-2B with customs records.

Free Trade Agreements and Rules of Origin

India has FTAs with ASEAN, Japan, Korea, UAE, Australia, EFTA and others, with negotiations ongoing with the EU and UK. Preferential rates are claimable only if the goods satisfy product-specific Rules of Origin, are supported by a valid Certificate of Origin, and meet direct-shipment and other procedural conditions under the CAROTAR Rules, 2020. Importers must possess origin information at the time of clearance — claims made later are routinely denied.

Special situations every importer should know

• EOU and SEZ imports — duty-free entry subject to bond, net foreign exchange obligations and end-use monitoring.
• Project imports under Heading 9801 — concessional rates for power, fertiliser, refinery and certain infrastructure projects, subject to prior registration.
• Re-imports of previously exported goods — duty depends on whether the export was under drawback, advance authorisation or DFIA.
• Personal baggage — separate rules under the Baggage Rules, 2016, with prescribed Free Allowance per traveller.
• Courier and post imports — separate Bill of Entry forms and procedural conditions.

Dispute resolution mechanisms

Customs disputes flow through Section 28 (short levy), Section 124 (confiscation and penalty), Section 128 (appeal to Commissioner Appeals), CESTAT, and finally High Court and Supreme Court. Advance Rulings under Section 28-I provide binding pre-import certainty on classification, valuation and origin. The Customs Authority for Advance Rulings issues rulings typically within three months. Strategic importers use Advance Rulings to lock in classification before launching new product lines, materially de-risking customs exposure for the next several years.

Conclusion

Customs duty is no longer a simple BCD plus IGST calculation. It is a system that pivots on accurate classification, defensible valuation, disciplined claim of exemptions and rigorous post-clearance documentation. Build a customs SOP that mirrors the rigour you apply to GST — the savings, when AEO and FTAs are leveraged correctly, are substantial; the cost of getting it wrong is equally substantial.