What is HTS 9903.85.03?

HTS 9903.85.03 is a Chapter 99 tariff modification under Section 232 Aluminum Derivative. It is not a product classification — it's an overlay code that stacks on top of a base 10-digit HTS code at entry. Scope text: Derivative aluminum products enumerated in U.S. note 19(a)(iii) to this subchapter, except products of Argentina, of Australia, of Canada, of Mexico (except as specified in subdivision (a)(ix) of such U.S. note 19), of member countries of the European Union (as enumerated in U.S.…

What rate does HTS 9903.85.03 apply?

The provision states: "The duty provided in the applicable subheading + 10%" That rate stacks on top of whatever the base HTSUS rate is for the underlying 10-digit code. Use the Tandom calculator to compute the full landed cost for any covered product.

Which countries does HTS 9903.85.03 apply to?

9903.85.03 applies universally to imports from all countries, except as carved out by parallel Chapter 99 provisions or country-specific exclusions referenced in the scope text.

Is HTS 9903.85.03 currently active?

Yes — 9903.85.03 is currently active (effective 2020-02-08) with no expiration on file.

How do I use HTS 9903.85.03 when filing?

9903.85.03 doesn't classify a product on its own. When a base 10-digit HTS code falls within this provision's scope and a shipment matches the country and date conditions, the broker declares the base code at entry, then references 9903.85.03 on a separate line so its rate stacks on top. It currently covers 12 base HTS codes in Tandom's catalog.

Tariff modificationaluminumActive

`9903.85.03`—Section 232 Aluminum Derivative

Overlay rate

The duty provided in the applicable subheading + 10%

Stacks on top of the base HTSUS rate of the product

12 base HTS codes covered

Effective from 2020-02-08 (no expiration on file)

Tandom · Duty calculator

See this overlay in a real duty stack

Pick a covered 10-digit code below, plug in country and invoice value, and Tandom will compute the full landed cost with this overlay stacked on the base rate.

`9903.85.03`—Section 232 Aluminum Derivative

See this overlay in a real duty stack

Plain-English explanation

Description

How to use this provision

Worked example

Target countries

Affected base HTS codes(12)

Related Chapter 99 codes(24)

Frequently asked questions

What is HTS 9903.85.03?

What rate does HTS 9903.85.03 apply?

Which countries does HTS 9903.85.03 apply to?

Is HTS 9903.85.03 currently active?

How do I use HTS 9903.85.03 when filing?

Learn more

How Chapter 99 tariff layers stack on a single entry

How to calculate US import duties

Section 232 steel, aluminum, and copper duties in 2026

File an IEEPA tariff refund through CAPE in 2026

Wire the Tandom Duty Calculator API into a TMS or broker software

Section 301 China tariff exclusions in 2026

9903.85.03—Section 232 Aluminum Derivative

See this overlay in a real duty stack

Plain-English explanation

Description

How to use this provision

Worked example

Target countries

Affected base HTS codes(12)

Related Chapter 99 codes(24)

Frequently asked questions

What is HTS 9903.85.03?

What rate does HTS 9903.85.03 apply?

Which countries does HTS 9903.85.03 apply to?

Is HTS 9903.85.03 currently active?

How do I use HTS 9903.85.03 when filing?

Learn more

How Chapter 99 tariff layers stack on a single entry

How to calculate US import duties

Section 232 steel, aluminum, and copper duties in 2026

File an IEEPA tariff refund through CAPE in 2026

Wire the Tandom Duty Calculator API into a TMS or broker software

Section 301 China tariff exclusions in 2026

`9903.85.03`—Section 232 Aluminum Derivative