USPS Customs Broker: What Importers Must Know in 2026

As of June 2, 2026, the intersection of USPS international mail and U.S. customs requirements is one of the most misunderstood areas in import compliance. For years, importers assumed small packages arriving via USPS were exempt from duties and broker requirements — that assumption is now costly and legally incorrect.

What Happened

The U.S. government closed the de minimis loophole for Chinese and Hong Kong goods shipped through postal channels, including USPS, effective May 2, 2025. Under an executive order signed in early 2025, goods manufactured in China or Hong Kong lost their eligibility for the $800 de minimis exemption under 19 USC § 1321, regardless of the shipment channel.

This change directly affects USPS international mail — specifically the e-Packet, First-Class Package International Service, and Priority Mail International channels that Chinese e-commerce platforms like Shein, Temu, and direct Alibaba suppliers have relied on to ship low-value goods into the U.S. duty-free.

De minimis exemption: A provision under 19 USC § 1321 that historically allowed goods valued at $800 or less to enter the United States without formal customs entry or payment of duties. The exemption was never unlimited — it excluded goods subject to antidumping or countervailing duty orders — but it effectively shielded most low-value consumer shipments from CBP scrutiny.

Before this change, CBP processed roughly 800 million de minimis shipments per year, many arriving through postal channels. The volume made enforcement difficult. The elimination of the exemption for Chinese-origin goods is a structural shift that requires customs entries — and in many cases, a licensed customs broker — for shipments that previously flowed through without documentation.

CBP handles postal clearances at International Service Centers (ISCs), including major facilities in New York, Los Angeles, Chicago, Miami, and San Francisco. These ISCs function as de facto ports of entry for international mail and are listed on CBP.gov.

Why It Matters to Importers

The practical impact is significant. If you are importing goods from China or Hong Kong through any USPS channel, you are now required to pay applicable Section 301 tariffs and, depending on value and product type, may need to file a formal consumption entry under 19 CFR Part 141.

This is not a minor paperwork change. Section 301 tariffs on Chinese goods currently range from 7.5% to 145%, depending on the product category and HS code. A $500 parcel of electronics components that previously entered duty-free could now carry a duty bill of $362 to $725 — on a single shipment.

Beyond duties, there are two additional compliance risks:

1. Misdeclaration exposure. Importers who continue to undervalue shipments or misclassify goods to avoid the new requirements face penalties under 19 USC § 1592, which can reach four times the unpaid duties for negligent violations.
2. Forced labor scrutiny. Goods arriving via USPS postal channels from China are subject to the Uyghur Forced Labor Prevention Act (UFLPA), which creates a rebuttable presumption that goods from Xinjiang are made with forced labor and may be detained at the ISC.

Affected Goods, Industries, and Trade Lanes

The most affected trade lane is U.S. imports from China and Hong Kong via direct-to-consumer postal shipments. Products commonly flowing through this channel include:

• Consumer electronics and accessories (HS Chapter 85)
• Apparel and textiles (HS Chapters 61–62)
• Toys and games (HS Chapter 95)
• Household goods and furniture components (HS Chapter 94)
• Cosmetics and personal care items (HS Chapter 33)

You can look up applicable duty rates for any product at hts.usitc.gov and check for active antidumping or countervailing duty orders at enforcement.trade.gov/adcvd.

What Importers Should Do Now

If any portion of your supply chain involves goods shipped from China or Hong Kong via USPS or other postal channels, take these steps immediately:

1. Audit your inbound shipments. Identify every supplier using USPS, e-Packet, or international postal channels. Flag any origin country listed as China (CN) or Hong Kong (HK).

2. Classify your goods correctly. Use hts.usitc.gov to find the 10-digit HTS code for each product. Misclassification is the leading cause of CBP penalties for small importers.

3. Engage a licensed customs broker. A CBP-licensed broker can assess your duty exposure, determine whether formal entry is required, and file entries on your behalf. You can search all CBP-licensed customs brokers at CustomsBrokerIndex or browse brokers by state to find one near you or near your receiving warehouse.

4. Request CBP binding rulings where uncertain. If you are unsure how your product will be classified or whether it qualifies for any exclusion, a binding ruling from CBP at rulings.cbp.gov locks in the legal interpretation before your goods arrive.

5. Review your supplier agreements. If your Chinese suppliers are marking commercial invoices with artificially low values to help goods clear customs, you carry the legal liability — not them. Update agreements to reflect accurate declared values.

6. Consider alternate sourcing or routing. Some importers are shifting production to Vietnam, Mexico, or other countries not subject to Section 301 tariffs. A broker with international trade expertise can help you evaluate options. Browse brokers by specialty to find those experienced with sourcing diversification strategies.

Background Context

The U.S. de minimis threshold was raised from $200 to $800 in 2016 under the Trade Facilitation and Trade Enforcement Act. At the time, the intent was to reduce CBP’s administrative burden for low-value tourist purchases and small personal imports.

What followed was a structural shift in global e-commerce. Chinese platforms engineered their logistics networks around the postal exemption, shipping directly to U.S. consumers at below-market prices, duty-free. By 2023, an estimated 600–800 million de minimis shipments entered the U.S. annually, with a disproportionate share originating from China.

CBP, the Office of the U.S. Trade Representative (USTR), and Congress flagged the loophole as a trade enforcement problem, a customs revenue problem, and a supply chain security concern. The 2025 executive order eliminating the exemption for Chinese-origin goods was the first concrete legislative action.

For importers who have historically relied on CBP’s informal entry process or the de minimis channel, understanding formal entry requirements is now essential. Formal entry under 19 CFR Part 141 requires a CBP-licensed customs broker or a licensed importer of record. Unlike informal entries, formal entries require a customs bond, accurate HS classification, and in some cases a prior disclosure if past shipments were underdeclared.

The National Customs Brokers & Forwarders Association of America (NCBFAA) publishes member updates and compliance guidance as these regulations evolve — a useful resource for both importers and brokers monitoring postal import rules.

If you are new to working with a customs broker, understanding how they fit into your broader logistics chain — including warehousing and fulfillment — is worth reviewing. See our guide on 3PL with customs clearance and warehousing for context on how these services connect.

Frequently Asked Questions

Does USPS use a customs broker for international packages?

USPS does not hire a customs broker on your behalf. For personal imports arriving via international mail, CBP processes clearance through USPS International Service Centers. However, if you are a commercial importer expecting goods via international mail services, you may need to engage a licensed customs broker to file a formal entry — especially for shipments valued over $800 or subject to Section 301 tariffs.

When did the de minimis exemption change for USPS shipments?

As of May 2, 2025, the U.S. eliminated the de minimis exemption for goods manufactured in China and Hong Kong, effective under a presidential executive order. Packages from China and Hong Kong shipped via USPS — previously exempt from duties under the $800 threshold — are now subject to duties and CBP entry requirements regardless of value. Verify the current rules at CBP.gov.

Who is most affected by USPS customs clearance changes?

E-commerce importers sourcing low-value goods from China and Hong Kong are most affected, including Amazon FBA sellers, Shopify store owners buying direct from Chinese suppliers, and small businesses importing samples or test orders. Freight forwarders routing small parcels through postal channels are also impacted.

What should importers do right now if they receive goods via USPS internationally?

Audit your supply chain to identify shipments routed through international USPS mail channels, particularly from China or Hong Kong. Engage a CBP-licensed customs broker to assess duty exposure, determine correct HS codes, and file entries where required. Brokers can also advise on bonded entries and accurate valuation under 19 CFR Part 141.

Where can importers find official guidance on USPS customs requirements?

Official guidance is available at CBP.gov for entry requirements and de minimis rules, and at hts.usitc.gov for duty rates by product. The NCBFAA also publishes practical compliance updates. For binding legal interpretation of how your specific goods will be classified, submit a ruling request at rulings.cbp.gov.

Need a licensed customs broker who handles postal and e-commerce imports? Search CBP-licensed brokers near you or browse by U.S. port of entry to find one who works at the International Service Center closest to your receiving address.