Avoiding Common Mistakes When Importing Goods from China Through Port of Portland

Operating with Outdated Assumptions About Terminal 6

A lot of importers come to the Port of Portland with information that is two or three years old. This is a big problem because the port has changed so much in that time. Terminal 6 is the sole functioning international container terminal in Oregon. Its history over the previous ten years has been so tumultuous that old assumptions can lead to very poor choices concerning route, scheduling, and carrier selection.

History that happened recently is important. Terminal 6 lost almost $14 million in its most recent fiscal year, which ended in July 2025. This is a little worse than expected. Container volumes have also dropped a lot from their peak in 2022, when they were around 170,000 twenty-foot equivalent units. The Port’s own business plan says that the port has to handle around twice as many TEUs each year to be financially stable. Right now, it processes about 50,000 to 60,000 TEUs per year. A lot of help from the state made the turnaround feasible. The Oregon legislature gave $20 million for capital improvements in the 2025 session, and Governor Kotek’s administration gave more money to keep operations going during the transition.

The good news is that by the end of 2025, Harbor Industrial Services, which has been running cranes and stevedoring at T6 since 2014, will officially be the terminal’s long-term operator. This is a regular lease structure at container ports across the country. This change means real stability after years of not knowing what will happen. The SM Line and Mediterranean Shipping Company are the only companies that now serve Portland. Harbor is working hard to get more carriers and increase volumes. For importers, this implies that T6 is open, running, and ready to compete. However, you should check directly with your freight forwarder about current vessel schedules and service frequencies before making any shipping plans, as the mix of carriers and sailing windows is often changing.

Miscalculating Your Total Tariff Exposure

In the past few years, the worst mistake that has cost China importers the most money is going into a purchase order without a complete tariff model. The duty structure for imports from China in 2025 is layered and unstable, so assuming it as a single set number will destroy your margins.

As of late 2025 and into 2026, the tariff stack on Chinese goods usually includes the baseline Most Favored Nation (MFN) duty rate for the specific product category, additional Section 301 tariffs that have been in place since 2018 (now extended through November 2026 for products with active exclusions following the November 1, 2025 Trump-Xi deal), a 10% fentanyl-related tariff that was reduced from 20% as part of the November 2025 executive orders, and a baseline 10% reciprocal tariff extended through November 2026. These layers build on top of each other for many Chinese commodities, which means that the total effective duty rates might be more than 55% before you add in any antidumping or countervailing charges (AD/CVD).

Things grow really risky at AD/CVD. For some solar panels, steel products, furniture parts, and tires, these product-specific metrics can be as high as 300% or more. They can be evaluated after the fact, and the importer of record, not the Chinese source, is fully responsible under the law. A lot of importers don’t find out about their AD/CVD risk until after their goods have already cleared customs. At that time, their options are restricted and costly. Before each purchase order is confirmed, not after the goods have shipped, you should run a full landed-cost model.

* Tariff rates may fluctuate. Before making a reservation, check with a licensed customs broker to be sure the rates are still the same.

One approach that people often forget to do is to see if your HTS code is part of any active Section 301 exclusions. After the Trump-Xi deal in November 2025, 178 product exclusions that were about to run out were extended until November 10, 2026. You can be paying duties that you don’t lawfully due if your goods fall under those categories. A licensed customs broker can undertake this check fast, and it’s usually always a good idea.

Missing or Botching the ISF Filing

The Importer Security Filing, often known as the “10+2,” must get to CBP at least 24 hours before your ship picks up cargo at the Chinese port of origin. It is not a formality. If you file your ISF late, not at all, or with the wrong information, you might be fined up to $5,000 for each infraction. CBP has always said that ISF enforcement is a top priority. In a more practical sense, a flagged ISF can hold up your whole container as soon as it gets to Portland, turning an easy delivery into a week-long nuisance.

The ISF needs eleven pieces of information from the importer: the seller, buyer, ship-to party, importer of record, consignee, manufacturer or supplier name, country of origin, commodity HTS codes, container stuffing site, and consolidator. The carrier sends two more things: the vessel stow plan and container status communications. Importers often make the mistake of waiting until the shipment is entirely confirmed to start the ISF. Instead, they should start it as soon as they make a booking. If there is a difference between the ISF data and the final Bill of Lading, such as a different amount, a corrected product description, or a slightly different consignee name, an amendment is needed. This takes time and increases the risk if the vessel has already sailed.

For ships going from China to Portland, they sometimes stop in Seattle or other West Coast ports before going up the Columbia River. This means that you may have even less time than you think to fix a bad ISF. The simple solution is to tell your freight forwarder to file the ISF within 24 hours of getting the booking confirmation, with the goal of doing so 48 to 72 hours before the ship is loaded. Then, before the ship leaves, check all ten fields against the draft commercial invoice and packing list.

Misclassifying Goods Under the HTS

Getting the Harmonized Tariff Schedule code wrong is one of the worst mistakes an importer can make because every product that comes into the United States needs one. The stakes are especially high for imports from China. If two HTS codes are next to each other, the difference between a 0% base duty rate and a 25% Section 301 penalty might be huge. When the product description on the commercial invoice doesn’t match the stated HTS code, CBP’s automated risk-scoring systems flag the entry. These flags don’t just go away.

If a mistake leads to unpaid duties, CBP can fine the person up to four times the amount of unpaid duty and can look at entries from the last five years. The importer of record is the only one who is legally responsible. The customs broker who filed the entry and the Chinese supplier who proposed a code are not. If your broker gives you the inaccurate rate, you are responsible. Trade law guidelines that came out after the November 2025 tariff adjustments made this even clearer. It said that customs brokers function as attorneys-in-fact when they file entries, which means that any mistake in classification is legally the importer’s fault.

Before you place your order, you should check the HTS code with a licensed U.S. customs broker. You should not do this before shipment or after. China’s HS codes and the US’s HTS codes are set up in a similar way, however they differ in various product groups. Don’t believe what your Chinese supplier says about how their items are classed in China. If you’re not sure about a product category or it’s worth a lot of money, you might choose to ask CBP for a binding determination ahead of time. It takes some effort to set up, but once it’s done, there is no possibility of being classified incorrectly for the rest of the ruling’s life.

It is also a good idea to check your import history from time to time to make sure the classifications are correct. The executive orders from November 2025 and the longer Section 301 exclusions have changed the best way to classify a number of products. Companies that set their HTS codes in 2022 and never looked at them again may be paying too much in duties. They may also be at danger of underpaying on products whose tariff treatment has changed.

Incomplete or Conflicting Documentation

The paperwork for a shipment must be complete, consistent with itself, and correct, and all three of these things must be true at the same time. It’s not good to be missing a paper. It’s generally worst to have documents that don’t agree with each other because inconsistency makes CBP think that something is being hidden or that the person doesn’t care. Neither of these impressions is good for you.

The commercial invoice, packing list, ocean bill of lading, and the official CBP entry (Form 7501) are the most important papers needed for every commercial shipment from China to Portland. In addition to this, certain types of products have further restrictions. Food and dietary supplements need to get FDA Prior Notice. If your electronic gadget has radio frequency parts, you need an FCC Declaration of Conformity. CPSC certificates are needed for products for kids. Wood packaging materials must meet the phytosanitary standards set by ISPM-15. Goods that have anything to do with China’s Xinjiang area may also fall under the Uyghur Forced Labor Prevention Act, which we talk about in more detail below.

The most typical mistake in paperwork is when the business invoice and the packing list don’t match up. For example, the amounts, weights, and descriptions don’t match. Before a cargo leaves China, make sure to check all of the documentation against each other for ten minutes. Make sure your product descriptions are explicit. For example, “ceramic dinner plates, 10.5 inch, white” is far better than “tableware.” Vague descriptions make CBP look more closely and delay down clearance. Specific descriptions move through the system without any problems.

Choosing the Wrong Incoterms

The International Chamber of Commerce’s Incoterms, or International Commercial Terms, spell out exactly where the seller’s duties end and the buyer’s duties begin in an international deal. When shipping from China to Portland, the choice of Incoterms has a direct effect on cost, risk, and compliance. This is a common area where less experienced importers make mistakes.

The worst thing you can do is buy something on EXW (Ex Works) terms without fully understanding what that means. If you use EXW, you’re responsible for everything that happens to the goods once they leave the Chinese factory floor. This includes arranging for Chinese export customs clearance, getting the goods to the port in China, and loading them onto the ship at the origin port. Most people who choose EXW do so because it looks like the lowest headline pricing. In real life, EXW often causes export delays, missing export licenses, and paperwork problems that make things harder when items get to Portland. This is because there is no skilled logistics partner in charge of the China-side logistics.

For most situations where goods are coming from China to Portland, FOB (Free On Board) or FCA (Free Carrier) are better options. Under FOB, the Chinese seller takes care of getting the products through customs and onto the ship at the port of origin. The buyer takes on the risk once the items are on board. FCA is better for containerized cargo and makes the moment of risk transfer clearer. Be sure to spell out the Incoterms you chose in the purchase contract, the commercial invoice, and any letter of credit paperwork. When the agreed-upon Incoterms don’t match what is reported to CBP, it can lead to customs value disputes that take a long time and cost a lot of money to settle.

Underestimating Transit Time

Terminal 6 is 100 miles up the Columbia River, which makes it stand out and means that careful preparation is needed. Ships that stop in Portland can’t be the biggest container ships on the Pacific, and their sailing patterns are different from those of direct coastal ports. Depending on where the ship comes from, how it gets to T6, and if it stops in Seattle or another West Coast port first, transit times from major Chinese ports to T6 usually take 16 to 22 days. But the time it takes to cross the ocean is only one aspect of the equation.

When your container gets to T6, it will take five to seven business days for port processing, CBP clearance, and transportation to your Oregon or Washington destination. This buffer takes into account the availability of terminals, the scheduling of drayage, and the fact that even a simple CBP inspection takes time. Importers who give consumers a delivery date based just on maritime transit time, without this buffer, often miss delivery windows, especially in the months preceding up to big retail seasons when volumes go up and clearance processes get longer.

If you have a hard deadline, like a trade show, a product launch, or a holiday shopping window, count back from that date and take away 5 to 7 days for processing on the U.S. side. This will give you your target vessel arrival date at T6. Next, take away the time it takes for the ocean to get to your port of origin. That is the last day you may book. If you can, add an extra week of buffer time. It usually costs a lot more to get an ocean shipment back by air freight quickly than it does to book it a little earlier.

Ignoring UFLPA Compliance

The Uyghur Forced Labor Prevention Act is one of the most important and strictly implemented trade compliance changes in the last few years. UFLPA says that any goods that were mined, produced, or made in whole or in part in China’s Xinjiang province are assumed to have been made using forced labor and are not allowed to enter the United States until the importer can show otherwise. The importer has to prove that, and CBP has been steadily boosting its enforcement since the law went into effect.

In 2025, the UFLPA will apply to a lot more than only commodities made in Xinjiang. If your product has parts or raw materials from Xinjiang, such cotton, polysilicon, aluminum, tomatoes, or some grades of steel, CBP can stop the shipment even if the finished goods were made in another part of China. This means that those who bring in textiles, electronics, solar energy items, and more and more industrial goods need to be able to trace the supply chain all the way down to the origins of raw materials. The costs of customs bonds, legal expenses, and storing cargo during a UFLPA hold might easily be more than the value of the items that are being held.

As a basic element of your sourcing process, you should ask your Chinese suppliers for supply chain transparency declarations. This is the least you can do. A third-party factory audit or supply chain mapping exercise is worth the money for product categories that are more likely to go wrong. If your products are being held under UFLPA, you need to hire a trade lawyer right once. The process for getting them back takes a lot of paperwork and, in some cases, direct communication with CBP’s UFLPA Enforcement Team.

Choosing a Freight Forwarder on Price Alone

Your freight forwarder and customs broker will have a bigger effect on the result of your shipments from China to Portland than nearly any other partner you choose. But for a lot of companies, especially smaller importers who are just starting to buy from China, the decision process boils down to who has the lowest freight price. This method always leads to undesirable results.

At T6, a budget forwarder without solid contacts with carriers may have a hard time getting reliable bookings, especially during peak seasons when there aren’t enough ships to serve Portland. They might not file ISF on time, answer CBP compliance questions correctly, or keep up with the quickly changing Section 301 and AD/CVD landscape. When tariff rates changed several times, exclusions were extended, and CBP enforcement priorities changed, the cost of bad advice can be far more than any savings on the freight estimate itself.

When looking for logistics partners for shipments between China and Portland, make sure they have particular, proven experience with shipping between China and the U.S. Lane on the West Coast. Ask them directly about their current relationships with carriers that serve T6. Find out how they keep track of tariff rate changes, how they handle ISF filing deadlines, and what they do for UFLPA-risk product groups. Get recommendations from importers who sell products that are similar to yours. A forwarder who asks you the correct questions during your initial contact, such as about your HTS codes, the geography of your supply chain, and your delivery timeframe, is showing that they are proactive and compliant, which is good for your business.

Failing to Plan for CBP Examinations and Port Holds

A CBP physical examination can happen even if the shipment was carefully packed. In the current enforcement climate, this is a fact of importing from China. It is also a mistake to think of it as an edge case instead of a planning variable. If your products are being held at a container freight station while you wait for clearance, an intensive examination at T6 can add five to ten business days to your clearance schedule.

A clean CBP compliance history is the greatest way to avoid having to take tests too often. This means that you always file accurate entries on time, have never broken the rules before, and have clear and consistent product descriptions that match what CBP discovers when they open the container. Importers who have created this track record over time are less likely to be checked. For importers who bring in a lot of goods, joining the C-TPAT program (Customs-Trade Partnership Against Terrorism) makes this trusted-shipper status official and can speed up the clearance process by a lot.

The practical planning tip is to never tell a customer that their order would arrive on the same day or the next day if customs clearance is required. A two-week cushion between when the vessel is expected to arrive at T6 and when you promise to deliver to your customer is not too much. It takes into consideration terminal pickup, a possible inspection, and delivery to the customer. It’s a nice surprise if your things arrive early and clearance passes easily. If clearance takes longer than you thought, you won’t have to explain why overseas shipment is unpredictable, which will maintain your connection with your consumer.

Overlooking Last-Mile Logistics from Portland

Many importers plan every detail of the ocean freight leg, but many see the last step—getting the products from the terminal to their warehouse—as just an administrative task to do later. This is a mistake that will cost you money, especially in Portland. The free time window at Terminal 6, when you can pick up a container without paying per diem fees, is usually three to five days after the container is ready. Importers who don’t set up drayage ahead of time with a carrier that knows how to handle T6 can find their containers sitting past the free time window, racking up detention fees of $150 to $300 per container per day.

Shippers coming from bigger ports don’t usually expect the extra difficulty that Portland’s locati0n brings. The city’s hills, river crossings, and main roads make it hard for huge trucks to get around, which can effect delivery times. The drayage market around T6 is smaller and more relationship-based than in LA/Long Beach or Seattle. This means that capacity can get limited rapidly during busy import times. The right order is to book ocean freight and a drayage carrier at the same time, not after the ship has left.

Importers in the Pacific Northwest and Midwest should take advantage of Terminal 6’s eight-track, on-dock intermodal yard that connects directly to the Union Pacific Railway. This rail link lets containers get reach places in Idaho, Montana, Utah, and beyond without having to be moved by truck again. If your final destination isn’t in the Portland metro area, you should seriously consider the T6 intermodal option over a full-truck drayage solution.

Neglecting Post-Entry Audit and Compliance Review

When your items clear customs, you are still responsible for following import rules. People often make the mistake of treating each shipment as a separate transaction with no follow-up. This is a typical and expensive mistake. CBP can look at entries up to five years after they are filed. With tariff rates changing often and enforcement getting stronger (as with the many executive orders of 2025), there is a high chance that mistakes made in the past will come to light in an audit.

The executive orders from November 2025 that lowered the fentanyl tariff and extended Section 301 exclusions were a chance for importers whose products qualify for extended exclusions to check if previous entries used the exclusion correctly and if a protest or post-summary correction is needed. Importers who have been utilizing tariff classification codes that are now subject to different duty treatment because of the 2025 rate changes should also do an internal check to make sure their broker has been applying the new rates correctly since they went into effect.

Setting up a simple internal review schedule, such checking CBP entry summaries against current duty rates, HTS codes, and any active exclusions every three months, doesn’t take much effort and can save you a lot of money if you find a compliance problem during an official CBP audit. If you import a lot of goods, hiring a trade lawyer to do an annual compliance assessment is a good use of your money.