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Every Chapter 99 code for any HTS number, updated daily
Paste your HTS numbers, pick the country of origin, and in seconds see every 9903 heading mapped to them — with rates, exemptions, PGA flags and the estimated total duty.
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A real result
Try the Duty / Exemption switches
Four codes looked up against China, exactly as the product renders them. Flip any matched Section 232 program between Duty and Exemption and the headings and estimated rate follow; click any code in the blue column to copy it.
| Input | Section 301 (China) China trade action | Forced Labor Framework / exemption | Advanced Semiconductors (232) | MHDV & Parts (232) | Autos & Parts (232) | Pharmaceuticals (232) | Aluminum (232) | All Chapter 99 codes Click a code to copy · dots removed | PGA1 | Estimated Duty Rate |
|---|---|---|---|---|---|---|---|---|---|---|
8708.29.51.90 | 9903.88.03+25% | 9903.05.900%(232 exempt)9903.05.31+12.5% | — | 9903.74.08+25%9903.74.110%declares outside 232 scope | 9903.94.05+25%9903.94.060%declares outside 232 scope | — | 9903.82.09+25%9903.82.010%declares outside 232 scope | — | - | Column 1: 2.5% |
8302.50.00.00 | 9903.88.03+25% | 9903.05.900%(232 exempt)9903.05.31+12.5%(conditional) | — | — | — | — | 9903.82.09+25%9903.82.010%declares outside 232 scope | — | - | Column 1: 0% |
2933.99.46.00 | — | 9903.05.890%(pharma exempt)9903.05.900%(232 exempt)9903.05.31+12.5%(conditional)9903.05.890%(pharma exempt) | — | — | — | 9903.04.60combined to 100%(patented only)9903.04.670%declares outside 232 scope | — | — | FDA | Column 1: 6.5% |
8471.50.*.* | 9903.88.03+25% | 9903.05.860%(exempt)9903.05.900%(232 exempt)9903.05.860%(exempt) | 9903.79.01+25%9903.79.020%declares outside 232 scope | — | 9903.94.05+25%9903.94.060%declares outside 232 scope | — | — | — | FDA | — |
←Scroll horizontally to review every program, PGA result, and duty source→
This is the product, not a mock-up. The pills and copy chips above work right here. The last row is a six-digit prefix: partial codes list their headings, and the duty estimate waits for the full ten digits.
Duty figures are estimates from published rates — research only, not legal or customs advice. This example is a snapshot; your own lookups run against the dataset as it stands, for any country of origin. Verify against the official HTSUS and current CBP guidance before filing.
How it works
One pass before you transmit
Paste your HTS codes
10, 8 or 6 digits, dots or not
Pick the country of origin
Origin decides what comes back
Read the whole answer
Codes, rates, PGA, estimated total
Coverage
Section 301 (China)
Forced Labor
Brazil (301)
Canada (338)
Battery / Graphite / Magnets
Quartz Surface Products (201)
Advanced Semiconductors (232)
MHDV & Parts (232)
Softwood Lumber (232)
Kitchen Cabinets (232)
Upholstered Furniture (232)
Autos & Parts (232)
Unmanned Aircraft (232)
Pharmaceuticals (232)
Aluminum (232)
Steel (232)
Copper (232)
Russia Col. 2 (note 30)
+ new programs as they are added
Why it matters
Why Chapter 99 codes get missed
The missing Chapter 99 line that nothing rejects
The base classification is right, the overlay heading is absent, and the entry goes through — until a post-entry review finds the same omission on every entry filed the same way.
What this does: Every heading mapped to your code is on the screen before you file.
One HTS number, several programs at once
A single line can carry Section 301, a Section 232 derivative heading and an exemption declaration at the same time. Check them one at a time and one of them gets missed.
What this does: Every program is resolved in one pass and shown side by side.
Knowing the heading is not knowing the cost
Some headings add duty on the full value, some reach only the metal content, and some exist purely to declare that a duty does not apply.
What this does: Each heading shows its rate, and the estimated total is added up for you.
Pricing
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Quick answers
Frequently asked questions about Chapter 99 lookups
- Can I try it before subscribing?
- Yes. Create a free account and you can look up 10 codes a day free, against any country of origin, with the full result — no payment details asked for. The allowance resets daily at midnight Pacific.
- What is a Chapter 99 code?
- Chapter 99 of the HTSUS holds temporary duty provisions that sit on top of an ordinary classification — usually a heading beginning 9903, reported alongside the regular ten-digit HTS number. They carry the additional duty, so a base classification can be entirely correct and the entry still wrong because the Chapter 99 line is missing.
- How do I find which 9903 code applies to my HTS number?
- Enter the HTS number and the country of origin. We show every Chapter 99 heading mapped to that code — Section 301, the Section 232 metals, derivative and vehicle actions, forced labor provisions and the exemption declarations — each with the rate it carries.
- Does it cover Section 232 derivative products?
- Yes — and those are the ones most often missed, because a derivative article is frequently classified nowhere near the metals chapters. Where a heading reaches only the metal content rather than the full customs value, the result says so on the heading itself.
- How current is the data?
- The dataset is updated as the programs change: new headings, revised rates, expiring exclusions, per-country changes. A lookup reads it as it stands at that moment.
- Are you my customs broker?
- No, and we do not conduct customs business. You supply the HTS number; the service reports what published Chapter 99 provisions reference it. We never classify goods, prepare documents for filing, or transact with CBP on anyone's behalf. See section 2 of the Terms of Service.
- Is this a substitute for the HTSUS?
- No. It is a research tool that gets you to the right headings quickly. Always verify against the official HTSUS and current CBP guidance before you file.
CHB Mate is an informational research tool.
It is not legal advice, not customs advice, and does not create a broker–client
relationship. We do not conduct customs business as defined in
19 C.F.R. § 111.1: you supply the HTS number, we show you what published
provisions reference it, and we never classify goods, prepare filings or transact with CBP.
Tariff data is compiled from public sources and provided as is;
you remain responsible for verifying every classification against the official
HTSUS and current CBP guidance before filing. See the
Terms of Service.
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