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HS code 9404.21 · Chapter 94

Mattresses of cellular rubber or plastics

Mattresses of cellular rubber or plastics, whether or not covered.

Current duty on this code

Base most-favoured-nation duty, pulled from the official tariff schedule when the destination publishes one. It does not include country-specific additional tariffs — for a US import those (Section 301, the 2025 reciprocal measures) can dwarf the base rate, and Kustaro shows them separately on a real classification.

United States

live official rate

3% (US HTS general/MFN, live)

VAT / sales tax: no federal VAT; state sales/use tax may apply

Source: USITC HTS (live) · retrieved 2026-07-29

United Kingdom

live official rate

2.00 % (UK third-country duty, live)

VAT / sales tax: 0.00 % (UK VAT, live)

Source: UK Trade Tariff API (live) · retrieved 2026-07-29

What this heading covers

Mattresses of cellular rubber or plastics, whether or not covered. It sits in furniture; bedding, mattresses; lamps; prefabricated buildings.

mattressfoam mattressmemory foambedding

Codes it gets confused with

Neighbouring headings in the same chapter. Most misclassification happens between codes this close, so it is worth reading the titles side by side before you file.

Documents to expect

  • commercial invoice
  • packing list

Watch out for

  • Fire-safety regulations apply in the UK.

Is 9404.21 the right code for your product?

A heading only fits once the details line up — material, construction, use and destination. Describe your product and Kustaro returns the candidate codes with a confidence score, the duty and additional tariffs for your lane, the documents customs will ask for, and what is still missing from your file.

Classify your product free

No account needed for the first one.

This page is reference information, not customs or legal advice. Codes and rates shown are candidates and estimates that change over time — confirm the classification and the applicable duty with a licensed customs broker or the destination customs authority before filing a declaration.