Q3Codes under 3903
| Code | Description | GST rate |
|---|---|---|
| 3903 11 | Expansible | 18% |
| 3903 19 | Polymers of styrene, in primary forms › Other | 18% |
| 3903 19 10 | Moulding powder | 18% |
| 3903 20 | Styrene-acrylonitrile (san) copolymers | 18% |
| 3903 30 | Acrylonitrile-butadine-styrene (ABS) copolymers | 18% |
| 3903 90 | Polymers of styrene, in primary forms › Other | 18% |
| 3903 90 10 | Copolymers, solely of styrene with allyl alcohol, of any acetyl value of 175 or more | 18% |
| 3903 90 20 | Brominated polystyrene, containing by weight 58% or more but not more than 71% of bromine, in one of the forms mentioned in note 6 (b) to this chapter | 18% |
← Chapter 39: Plastics and plastic articles
Related HSN codes
3904Polymers of vinyl chloride or of other halogenated olefins3902Polymers of propylene or of other olefins, in primary forms3905Polymers of vinyl acetate or of other vinyl esters3901Polymers of ethylene, in primary forms3906Acrylic polymers in primary forms3926Other articles of plastics and articles of other materials
Frequently Asked Questions
What is the HSN code for polymers of styrene, in primary forms?
The HSN code for polymers of styrene, in primary forms is 3903, under Chapter 39 (Plastics and plastic articles).
What is the GST rate on polymers of styrene, in primary forms?
Polymers of styrene, in primary forms is taxed at 18% GST under HSN code 3903.
How many digits of the HSN code go on a GST invoice?
It depends on your turnover in the previous financial year: businesses above ₹5 crore generally show 6 digits (8 for certain specified goods), and smaller businesses show 4 digits on B2B invoices. Check the current e-invoicing/HSN notification for the exact threshold that applies to you.
Rates as per Notification No. 9/2025-Central Tax (Rate), as amended, as of 7 October 2026. For guidance only — verify with your tax advisor.