9903.45.21—Safeguard Exclusion
Published rate notation
No change
Expired for entries on or after 2026-02-07.
Tandom · Duty calculator
Check a historical entry date
Pick a mapped 10-digit code and enter origin, value, and entry date. The calculator determines which Chapter 99 measures apply to that scenario; it does not force this provision into the result.
Plain-English explanation
HTS 9903.45.21 is a Chapter 99 tariff modification under Safeguard Exclusion. For a qualifying entry during this provision's effective period, the published rate notation is no change; the source instructions determine how that notation relates to the underlying base duty. Country scope is not on file in Tandom's catalog. Expired for entries on or after 2026-02-07. Tandom maps 4 base HTS codes to this provision for catalog screening; a dated calculator scenario determines whether it applies.
Historical or scheduled rate mechanics
This catalog record does not establish an additive rate relationship, so the page preserves the published notation without adding it to the base rate. Expired for entries on or after 2026-02-07. The calculator checks the selected entry date and shipment facts before including any Chapter 99 provision.
Description
Authoritative scope text from the U.S. Harmonized Tariff Schedule
If entered in an annual aggregate quantity not exceeding 12.5 gigawatts, under the terms of such note
How to use this provision
Filing mechanics during the provision's effective period
Chapter 99 provision 9903.45.21 is a tariff modification — it doesn't classify a product on its own. When a base 10-digit HTS code falls within this provision's scope during its effective period and a shipment matches the country and date conditions, the broker declares the base code at entry and follows the source instructions for reporting 9903.45.21 on a separate line.
Worked example
Published notation shown without assuming an additive rate
For an illustrative $10,000.00 entry during a period when this provision is in effect, assume an importer files 8541.42.00.10 (crystalline silicon photovoltaic cells of a kind described in statistical note 12 to this chapter) from a country in the published scope and all product conditions are met. The published rate notation is No change and the base HTSUS rate is Free. The catalog does not carry a structured additive relationship for this provision, so this example does not add the displayed percentage to the base rate. Expired for entries on or after 2026-02-07.
No numeric total is shown because a published percentage alone does not establish whether the provision is additive, total, or otherwise conditional. Use the calculator for a dated scenario.
Opens the Tandom calculator with HTS 8541.42.00.10 pre-filled. Confirm the country, shipment value, and entry date to build an itemized duty and customs-fee estimate.
Target countries
Published country scope for entries during the provision's effective period
No country scope on file.
Mapped base HTS codes(4)
Base 10-digit codes mapped to this provision for catalog screening.
Related Chapter 99 codes(10)
Other Safeguard Exclusion provisions in Tandom's catalog
9903.45.01If entered in an aggregate quantity, in any quarterly period specified in note 17(i) to this subchapter, not exceeding 300,000 units in any such quarterly period, under the terms of such noteExpired9903.45.02OtherExpired9903.45.05If entered in an annual aggregate quantity not exceeding the quantity specified in note 17(g) to this subchapter, under the terms of such noteExpired9903.45.06OtherExpired9903.45.22OtherFrequently asked questions
What is HTS 9903.45.21?
HTS 9903.45.21 is a Chapter 99 tariff modification under Safeguard Exclusion, not a product classification. Its published scope describes when it can modify the duty treatment of a base 10-digit HTS code. Scope text: If entered in an annual aggregate quantity not exceeding 12.5 gigawatts, under the terms of such note
What rate does HTS 9903.45.21 apply?
The provision's published rate notation is: "No change" Tandom's catalog does not identify this record as an additive rate, so consult the source instructions for how the notation relates to the base HTSUS rate. Use the Tandom calculator for a dated scenario.
What country scope is listed for HTS 9903.45.21?
9903.45.21 does not have a country scope on file in Tandom's catalog. See the source citation for the authoritative country list.
Is HTS 9903.45.21 currently active?
Learn more
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How Chapter 99 tariff layers stack on a single entry
How to read, order, and report Chapter 99 HTS codes alongside the base classification on a US entry summary in 2026. The full stacking ladder for brokers and compliance teams.
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