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For HS 620342 (men’s/boys’ cotton trousers & shorts, not knit) from India to Thailand:

Duty in Thailand

• MFN applied import duty: 30%
• Preferential rate shown in engine: 5%

What this means: the duty you pay in Thailand depends on whether your shipment qualifies for the preferential rate under the applicable trade agreement/rules of origin. If it does not, Thai customs may assess the 30% MFN rate.

Benefits for the India exporter

• RoDTEP benefit from India: 4.3% of FOB
• This is an export incentive for the Indian side, not a Thai import duty reduction.
• To claim it properly, the exporter generally needs valid export documentation and RCMC where applicable.

Documents you should keep ready

For this lane, the core set is:

• Commercial Invoice
• Packing List
• Bill of Lading / Air Waybill
• Certificate of Origin
• Preferential origin certificate if claiming the 5% rate
• IEC of the Indian exporter
• GST registration details
• RCMC if claiming RoDTEP/export incentives
• Any inspection / quality / buyer-required certificate if the Thai importer or product standard requires it

Practical compliance points

• India side: export filing is through ICEGATE
• Thailand side: customs will focus on classification, valuation, and origin
• If the shipment is being claimed at the preferential 5% rate, origin proof must match the agreement rules exactly; otherwise Thai customs can reclassify to MFN 30%

Bottom line

• Thailand duty: 30% MFN, or 5% preferential if origin rules are satisfied
• Indian export benefit: RoDTEP 4.3% of FOB
• Key documents: Invoice, packing list, BL/AWB, COO, origin proof for preference, IEC, GST, and RCMC

If you want, I can also give you a shipment checklist for India → Thailand or estimate the landed cost on a CIF value.