HS code for building blocks
The U.S. HS code for building blocks is usually 9503.00.00.73 (plastic bricks, ages 3 to 12), with no general duty and an estimated total of 12.5% from China and 12.5% from Vietnam once additional duties are added.
Estimates use tariff data as of October 22, 2026. The China and Vietnam estimates include Section 301: Forced labor action (12.5%). From China, Section 301: China list duty (7.5% or 25%) may also apply, up to 37.5% in total. Classifications and duty estimates are guidance based on the published HTSUS. The importer of record is responsible for the final classification.
Codes by variant
| Variant | HTS code | General duty | Est. from China |
|---|---|---|---|
| Plastic bricks, ages 3 to 12 | 9503.00.00.73 | Free | 12.5% |
- 9503.00.00.73: Labeled or determined by importer as intended for use by persons / 3 to 12 years of age
What decides the code
Plastic building bricks for children are classified as toys under heading 9503, specifically 9503.00.00.73 when labeled for ages 3 to 12.
- The product is a toy for children's play, which places it in heading 9503 rather than a general plastics heading.
- The bricks are made of plastic and are not reduced-scale models, so they fall in the other toys provision of 9503.00.00.
- Age labeling for persons 3 to 12 years of age leads to 9503.00.00.73 under the children's products subheading.
Common mistakes
- Classifying plastic bricks under 3926 as other articles of plastics is wrong because heading 9503 covers toys of this kind.
- Using 9503.00.00.73 for bricks labeled for ages under 3 is wrong because that line requires labeling for persons 3 to 12 years of age.
- Treating building bricks as reduced-scale models under 9503 is wrong because they are construction toys, not scale models.
Estimated U.S. duty by origin
- China
- 12.5% = Free general + 12.5% Section 301: Forced labor actionMay also apply: Section 301: China list duty (7.5% or 25%). Up to 37.5%.
- Vietnam
- 12.5% = Free general + 12.5% Section 301: Forced labor action
For HTS 9503.00.00.73, as a share of customs value, before fees. Check every measure for your entry with the tariff checker.
EU code and duty
- Plastic bricks, ages 3 to 12
- CN 9503 00 35, 4.7%
EU Combined Nomenclature 2026, third-country (erga omnes) duty. Preferential rates and EU trade remedy duties are not included.
CPSC eFiling
9503.00.00.73 (CP2) is on CPSC's eFiling HTS list. CPSC certificate related data is required. If building blocks is subject to a CPSC rule, file the certificate data at entry through your broker or the CPSC Product Registry.
Check what to file for 9503.00.00.73
CPSC HTS list for eFiling, October 1, 2026. The list is guidance and not exhaustive.
Frequently asked questions
What is the HS code for building blocks?
The U.S. HTS code for building blocks is usually 9503.00.00.73 (plastic bricks, ages 3 to 12). The first six digits, 9503.00, are the international HS code.
What is the U.S. import duty on building blocks from China?
The U.S. general duty on HTS 9503.00.00.73 is Free. With the additional duties that apply to goods of China (Section 301: Forced labor action (12.5%)), the estimated total is 12.5% of customs value. Section 301: China list duty (7.5% or 25%) may also apply depending on the exact product. From Vietnam the estimate is 12.5%. Tariff data as of October 22, 2026.
Does building blocks need CPSC eFiling?
HTS 9503.00.00.73 or another code on this page is on CPSC's eFiling HTS list. If the product is subject to a CPSC rule, such as a children's product, the certificate data must be filed at entry. A product that needs no certificate can use a disclaim message.
Tariff schedule pages
- 9503.00.00.73Labeled or determined by importer as intended for use by persons / 3 to 12 years of age
- Heading 9503Tricycles, scooters, pedal cars and similar wheeled toys; dolls' carriages; dolls, other toys; reduced-scale ("scale") models and similar recreational models, working or not; puzzles of all kinds; parts and accessories thereof
Related products
Codes checked against the USITC Harmonized Tariff Schedule retrieved October 22, 2026. Additional duties reviewed October 22, 2026. This is an estimate: the importer of record is responsible for classification.