HSN Code 8421 — Filters & purifiers
HSN code 8421 covers centrifuges, including centrifugal dryers, filtering or purifying machinery and appara for liquids or gases. Under GST 2.0 (effective 22 September 2025), HSN 8421 (filters & purifiers) is taxed at 18% GST. This code falls under Chapter 84 — Nuclear Reactors, Boilers, Machinery And Mechanical Appliances; Parts Thereof.
Source: CBIC GST rate schedule · HSN reporting rules per CBIC (GST 2.0, effective 22 Sep 2025).
HSN 8421 at a glance
| HSN Code | 8421 |
| Description | CENTRIFUGES, INCLUDING CENTRIFUGAL DRYERS, FILTERING OR PURIFYING MACHINERY AND APPARA FOR LIQUIDS OR GASES |
| GST Rate (GST 2.0) | 18% |
| Chapter | Chapter 84 — Nuclear Reactors, Boilers, Machinery And Mechanical Appliances; Parts Thereof |
| Heading | 8421 |
GST rate per the CBIC GST rate schedule (GST 2.0, effective 22 Sep 2025); verified 2026-06-07. HSN classification per the Central Board of Indirect Taxes & Customs.
Sub-classifications under HSN 8421
35 more specific 6- and 8-digit codes fall under 8421 (filters & purifiers). The exact sub-code depends on the product variant; the GST rate is shown for each.
| HSN Code | Description | GST |
|---|---|---|
| 842111 | Cream Separators | 18% |
| 842112 | Clothes-Dryers | 18% |
| 842119 | Other : | 18% |
| 842121 | For Filtering Or Purifying Water : | 18% |
| 842122 | For Filtering Or Purifying Beverages Other Than Water | 18% |
| 842123 | Oil Or Petrol-Filters For Internal Combustion Engines | 18% |
| 842129 | Other | 18% |
| 842131 | Intake Air Filters For Internal Combustion Engines | 18% |
| 842132 | Catalytic Converters Or Particulate Filters, Whether Or Not Combined, For Purifying Or Filtering Exhaust Gases From Internal Combustion Engines | 18% |
| 842139 | Other : | 18% |
| 842191 | Of Centrifuges, Including Centrifugal Dryers | 18% |
| 842199 | Other | 18% |
| 84211100 | Cream Separators | 18% |
| 84211200 | Clothes-Dryers | 18% |
| 84211910 | Bowl Centrifuges | 18% |
| 84211920 | Basket Centrifuges | 18% |
| 84211930 | Continuous Automatic Centrifuges | 18% |
| 84211940 | Self Cleaning Centrifuges | 18% |
| 84211950 | Decanter Centrifuges Horizontal Bowl | 18% |
| 84211960 | Screw Conveyor Centrifuges | 18% |
| 84211991 | For Chemical Industries | 18% |
| 84211999 | Other | 18% |
| 84212110 | Ion Exchanger Plant Or Apparatus | 18% |
| 84212120 | Household Type Filters | 18% |
| 84212190 | Other | 18% |
| 84212200 | For Filtering Or Purifying Beverages Other Than Water | 18% |
| 84212300 | Oil Or Petrol-Filters For Internal Combustion Engines | 18% |
| 84212900 | Other | 18% |
| 84213100 | Intake Air Filters For Internal Combustion Engines | 18% |
| 84213200 | Catalytic Converters Or Particulate Filters, Whether Or Not Combined, For Purifying Or Filtering Exhaust Gases From Internal Combustion Engines | 18% |
Showing 30 of 35 sub-codes — search the HSN Code Finder for the rest.
Frequently Asked Questions
What is the HSN code for filters & purifiers?
What is the GST rate on filters & purifiers?
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Is the HSN code 8421 mandatory on invoices for filters & purifiers?
Related HSN codes in Chapter 84
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