# United States tariff lines under HS 3815.12

> The United States tariff splits HS 3815.12 (supported catalysts: With precious metal or precious metal compounds as the active substance) into 2 national lines: 3815.12.00.10 (with platinum group metals as the active substance) and 3815.12.00.90 (other). Every United States line under 3815.12 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/381512
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 38](https://border.bot/countries/united-states/hs-codes/38) / [3815.12](https://border.bot/countries/united-states/hs-codes/381512)

## Key facts

- HS subheading: [3815.12](https://border.bot/hs-codes/381512)
- Duty (MFN): Free
- National lines: 2
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 38: Miscellaneous chemical products

## United States lines under 3815.12

The United States tariff splits HS 3815.12 (supported catalysts: With precious metal or precious metal compounds as the active substance) into 2 national lines: 3815.12.00.10 (with platinum group metals as the active substance) and 3815.12.00.90 (other).

Every United States line under 3815.12 is free of general (MFN) duty.

- [3815.12.00.10](https://border.bot/countries/united-states/hs-codes/3815120010) Supported catalysts, With precious metal or precious metal compounds as the active substance, With platinum group metals as the active substance. Duty (MFN): free
- [3815.12.00.90](https://border.bot/countries/united-states/hs-codes/3815120090) Supported catalysts, With precious metal or precious metal compounds as the active substance, Other. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 3815.12 yet.

- [The Harmonized System text for 3815.12](https://border.bot/hs-codes/381512)

- Previous subheading: [3815.11](https://border.bot/countries/united-states/hs-codes/381511) Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included
- Next subheading: [3815.19](https://border.bot/countries/united-states/hs-codes/381519) Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 3815.12?

The United States tariff splits HS 3815.12 (supported catalysts: With precious metal or precious metal compounds as the active substance) into 2 national lines: 3815.12.00.10 (with platinum group metals as the active substance) and 3815.12.00.90 (other).

### What is the duty on HS 3815.12 in the United States?

Every United States line under 3815.12 is free of general (MFN) duty.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/381512.json