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For HS 300490 from India to the United Kingdom, the UK import duty is 0.0% MFN.

On the Indian side, the main export benefit available in the context is RoDTEP at 0.7% of FOB.

Duty

• UK import duty: 0.0% (MFN applied)
• Practical impact: this makes the UK a relatively low-friction market for this HS line from a tariff perspective.

Documents you should prepare

For this shipment, the core export set is:

• Commercial Invoice
• Packing List
• Bill of Lading / Air Waybill
• Certificate of Origin
• FTA certificate if you want to claim preferential treatment under any applicable UK-India preference scheme, where available
• Inspection / health certificates if the product falls under pharmaceutical/regulatory controls
• Insurance policy/certificate
• Letter of Credit documents, if payment is under LC

India-side compliance / export setup

• IEC (Import Export Code) – mandatory
• GST registration – needed for export compliance and refund flow
• RCMC – needed if you want to claim DGFT-linked export incentives like RoDTEP
• Customs filing via ICEGATE

Benefits

• RoDTEP: 0.7% of FOB
• Duty advantage in the UK: with 0% MFN duty, your landed-cost edge will depend more on pricing, regulatory compliance, freight, and any preferential-origin benefit you can lawfully claim.

Important practical note for HS 300490

Because this is a medicament in dosage form, the UK buyer/importer may need to satisfy UK medicines regulatory requirements depending on the exact product composition, presentation, and intended use. So in practice, you should confirm whether the product needs:

• medicines registration / authorization,
• labelling compliance,
• GMP-related documentation,
• or a free-sale/manufacturing declaration.

If you want, I can also give you a shipment checklist for India → UK for HS 300490 with customs steps, likely regulatory documents, and Incoterm-based responsibility split.