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HSN 3903: Polymers of styrene, in primary forms
HSN code 3903 covers: Polymers of styrene, in primary forms.
After the 22 Sep 2025 reform most goods fall under 5% or 18% GST (a few sin/luxury items are 40%). We don't show an exact rate for this specific code because it isn't verified — check the CBIC rate finder or your CA, then enter that rate when you invoice.
Rates were revised in the 22 Sep 2025 GST reform (now a two-slab 5% / 18% structure for most goods, with a 40% slab for sin/luxury items). This is a reference, not tax advice — confirm the exact rate for your specific item with your CA.
What's inside 3903
This heading has 5 subheadings, including: Styrene polymers; expansible polystyrene, in primary forms, Styrene polymers; (other than expansible polystyrene), in primary forms, Styrene polymers; styrene-acrylonitrile (SAN) copolymers, in primary forms, Styrene polymers; acrylonitrile-butadiene-styrene (ABS) copolymers, in primary forms, Styrene polymers; in primary forms, n.e.c. in heading no. 3903. Use the HSN/SAC finder to pin down the exact code.
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