An HTS code is the 10-digit number that identifies a product in the Harmonized Tariff Schedule of the United States. It tells US Customs and Border Protection (CBP) which duty rate applies, which extra tariffs may stack on top, and how the import is counted in trade statistics. For EV chargers, CBP rulings show two common outcomes: AC chargers that only switch and protect power have been classified in subheading 8537.10.91, while DC chargers that convert power have been classified in 8504.40.95. Your exact code still has to be confirmed for your own product.
Key Takeaways
- An HTS code is 10 digits: six shared HS digits plus four US digits.
- CBP rulings classify AC EVSE in 8537.10.91 and power-converting DC chargers in 8504.40.95.
- The code drives the base rate and which extra tariffs apply.
- For new designs, a binding ruling gives certainty before you ship.
This guide goes one level deeper than our overview of importing EV chargers into the US. It explains how the code is built and how chargers are classified. It is not legal or customs advice.
HS Code vs HTS Code: What Is the Difference?
The Harmonized System (HS) is an international nomenclature used by most customs authorities. Its first six digits are shared worldwide, so a charger has the same six-digit HS code in China, the EU and the US. Each country then adds its own digits. The US version, the HTSUS, is published by the US International Trade Commission and searchable at hts.usitc.gov.
| Digits | Name | Who sets it | Example (8537.10.91.70) |
|---|---|---|---|
| 2 | Chapter | International (HS) | 85: electrical machinery and equipment |
| 4 | Heading | International (HS) | 8537: boards and panels for electric control |
| 6 | Subheading | International (HS) | 8537.10: for a voltage not exceeding 1,000 V |
| 8 | Tariff line | United States | 8537.10.91: sets the general duty rate |
| 10 | Statistical suffix | United States | .70: used for trade statistics |
So when someone asks “what is the HTS code in shipping,” the answer is: the 10-digit number on the US entry, while export documents from China usually show the shared six-digit HS code plus China’s own digits.
How EV Chargers Are Typically Classified
Classification follows what the product does, not what it is called. CBP’s published rulings draw a clear line between chargers that convert power and those that do not.
- AC chargers (EVSE): In ruling N346832 (March 2025), CBP classified a wall-mounted Level 2 unit in 8537.10.91 because it “does not convert or alter the input electricity.” In ruling N326064 (2022), portable and wall EVSE models were classified the same way. The current HTSUS lists a 2.7% general rate for 8537.10.91.
- DC chargers: In ruling N324397 (2022), a charger that converts AC to DC was classified in 8504.40.95 as a static converter, which currently has a free general rate.
- Adapters, cables and parts: these may fall in other headings depending on design. Do not assume they share the charger’s code.
The general rate is only the first layer. Products of China can also owe Section 301 and other additional duties, which are listed in Chapter 99 of the HTSUS.
Why a Wrong Code Is Costly
The importer of record is responsible for the code, even when a broker files the entry. A wrong code can mean underpaid duty, back duties with interest, penalties and delays. It also affects which extra tariffs and exclusions apply. Use the same code on the commercial invoice, the ISF filing and the entry.
Getting Certainty: Binding Rulings From CBP
For a new design, an importer can request a binding ruling from CBP before the first shipment. Past rulings are searchable in CBP’s Customs Rulings Online Search System (CROSS), described on the CBP Rulings and Legal Decisions page. A ruling applies to the specific product described, so compare your product’s function, not just its name. Prepare:
- A clear description of what the charger does, including whether it converts power.
- Datasheet, photos, wiring diagram and bill of materials.
- Country of origin and the code you believe applies, with reasons.
Our guide to reading an EV charger datasheet shows which specs matter. EVDANCE supplies datasheets and product descriptions for models such as the EV-ACS4005T 40A NACS portable charger and the EV-RHDC30K-L DC charger to help your broker classify each one.
Frequently Asked Questions
Is the HS code the same as the HTS code?
The first six digits are the same worldwide. The US HTS code adds four more digits that set the US duty rate and statistics.
What HTS code do EV chargers use?
CBP rulings have placed AC EVSE in 8537.10.91 and AC-to-DC chargers in 8504.40.95. Confirm your product with a licensed customs broker or a binding ruling.
Can I use my supplier’s HS code?
Use it as a starting point only. The US importer of record is responsible for the final 10-digit classification.
Related Reading
- Importing EV Chargers Into the US: Customs, HTS and Section 301
- FOB vs DDP: How to Import EV Chargers From China
- NACS Portable EV Charger Sourcing Guide for US Importers
- Canada EV Charger Import Guide: cUL, CSA and Duties
