Data Methodology
How we source our HSN, GST & import-duty data
The HSN Code Finder is built entirely from official Indian government data — no estimates, no scraping of third-party sites. Here is exactly what we use and how the numbers are produced.
Our data sources
CBIC Customs Tariff — First Schedule
Every HSN heading, subheading and 8-digit tariff item, its description, unit of measure and standard (MFN) rate of duty.
Indian Customs Tariff — First Schedule (as on 30.06.2025, CBIC)·cbic.gov.in
ICEGATE duty calculator
The effective import-duty stack per 8-digit code — Basic Customs Duty (BCD), AIDC, Social Welfare Surcharge, IGST and Compensation Cess — computed on a ₹100 assessable value.
Indian Customs EDI gateway·icegate.gov.in
ITC-MACMAP preferential (FTA) rates
Free-Trade-Agreement preferential duty rates by partner country, used for the landed-cost and 'where to source' comparisons.
ITC Market Access Map·macmap.org
How the import-duty stack is computed
Every per-code page shows the effective duty on an assessable value (CIF) of ₹100, applied in the order Indian Customs uses:
- BCD — Basic Customs Duty, the headline rate from the First Schedule, charged on the assessable value.
- AIDC — Agriculture Infrastructure & Development Cess, charged on the BCD.
- SWS — Social Welfare Surcharge, charged on (BCD + AIDC).
- IGST — Integrated GST, charged on (CIF + BCD + AIDC + SWS).
- Compensation Cess — where applicable, on top of IGST for select goods.
- Total effective duty — the sum of the above, shown as a percentage of the ₹100 CIF value.
The GST/IGST rate shown is the base rate for the heading; the exact rate can vary with a product’s composition, form or end use under the relevant rate notifications.
How often it’s updated
The tariff schedule is refreshed against the current CBIC edition (presently Indian Customs Tariff — First Schedule (as on 30.06.2025, CBIC)) and re-reviewed with each Union Budget and any interim rate notification. Every page carries a “Last reviewed” date so you can see the edition it reflects.
Accuracy & limitations
This tool is a free reference, not legal or tax advice. Rates and classifications can change through CBIC/DGFT notifications between reviews, and the correct code for a specific consignment depends on its exact description and end use. Always verify against the latest official notification before filing a Bill of Entry.
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