If you sell internationally, import customs duties and taxes aren’t optional to understand — get them wrong and the result is unexpected costs, frustrated customers, and abandoned carts.
This guide breaks down what duties and taxes actually are, how they’re calculated, who pays them, and how to manage them strategically.
New to trade compliance as a broader topic? Start with why trade compliance matters before diving into the specifics below.
What Are Import Customs Duties and Taxes?
Import customs duties are charges applied by a country’s customs authority on goods entering from abroad, determined primarily by how the product is classified — its category, materials, and intended use. Apparel, electronics, and cosmetics can all carry very different duty rates for this reason.
Alongside duties sit taxes on imported goods, such as VAT (Value-Added Tax) or GST (Goods and Services Tax). Unlike duties, these taxes aren’t based on the product category — they’re based on the total value of the shipment, which in many countries includes the product cost, shipping fees, and even the duties already assessed.If you’re a US brand unsure whether you owe these abroad, see our full guide to international ecommerce taxes for US merchants.
Finally, there are additional import fees charged by carriers or customs intermediaries — brokerage, clearance, and handling fees required to move the shipment through customs.
Combined, duties, taxes, and fees make up the total import cost, commonly called the landed cost — the full amount that must be paid for a product to clear customs and reach the customer.
How Are Import Duties Calculated?
The first and arguably most important is the Harmonized System (HS) code. Every product that crosses a border is assigned an HS code, which acts as a universal classification system. This code tells customs what the product is, and from that, they determine the applicable duty rate. Even small differences in classification can lead to different rates, which is why accuracy here really matters.
The second factor is customs valuation, or the value assigned to the goods being imported. In most cases, this is based on the transaction value—the price the customer paid for the product. However, depending on the country and the type of order, this value may also include additional costs like shipping and insurance.
The third key element is the country of origin, meaning where the product was manufactured (not where it was shipped from). This matters because trade agreements between countries can reduce or eliminate duties altogether. On the flip side, targeted tariffs—whether retaliatory, antidumping, or policy-driven—can dramatically increase duty rates for specific origins. For example, recent shifts in U.S. trade policy and tariff rulings have had major implications for import costs. You can explore ongoing updates in our IEEPA tariffs guide for importers, or track real-time changes using tools like Trump Trade Tracker.
When you put these together, you can look at landed cost this way:
- The HS code determines the rate
- The customs value determines the amount the rate is applied to
- The country of origin determines whether that rate is reduced, increased, or unchanged
While the underlying system is standardized globally, each country applies its own rules and thresholds, this is why duty calculations can vary from one market to another.
In simple terms: Duties + Taxes + Fees = Total landed cost
Who Pays Import Duties and Taxes?
There are two models for when and how duties and taxes get collected, and they produce very different delivery experiences:
There are two main models.
In a DDU (Delivered Duties Unpaid) model, the customer is responsible for paying all customs charges, including duties, taxes, and import fees, when the shipment arrives. While this reduces upfront costs for the merchant, it often creates a poor experience.
Typically, the customer is contacted by a local broker or carrier and asked to pay before delivery. This unexpected request, often referred to as a “surprise fee”, is one of the biggest reasons international orders fail. Many customers refuse to pay, leading to returns, delays, and lost revenue.
In fact, in today’s ecommerce landscape, customs processes, duties, and regulatory compliance are among the biggest challenges in cross-border ecommerce, often leading to delays and delivery issues.
In contrast, the DDP (Delivered Duties Paid) model shifts responsibility to the merchant. Here, duties and taxes are calculated upfront and collected at checkout. Some brands even use a landed cost calculator to ensure accuracy in real time.
The result is a seamless, “domestic-like” experience for customers with no surprises, no delays, and no additional payments at delivery. This is why most modern ecommerce brands are moving toward DDP because it improves transparency and reduces friction.
If you want a deeper breakdown, see our full guide on DDP vs DDU for ecommerce brands.
Fees Beyond Duties and Taxes
When calculating the true cost of shipping internationally, many ecommerce brands focus only on duties and taxes even though that’s only part of the picture. There is another layer to consider: additional import fees. These costs are often less visible, yet they can add up quickly and significantly impact both your margins and your customer experience.
Most of these fees come from the logistics and customs clearance process itself. For instance, customs brokerage fees are charged by the party responsible for clearing the goods through customs, often the carrier (like DHL or FedEx) or a specialized third-party broker.
In addition, carriers may apply clearance or administrative fees for processing shipments as they move through customs. These charges can vary depending on the destination country, shipment value, and complexity of the clearance process.
There are also handling or processing fees, which cover the physical inspection, storage, or movement of goods within customs facilities. While each of these charges may seem minor on its own, together they form an important part of the total cost of importing goods.
The challenge for ecommerce brands is that these additional import fees are not always clearly communicated upfront. As a result, they often appear as unexpected charges at delivery. This lack of transparency can lead to frustrated customers, refused packages, and ultimately a poor buying experience.
For brands managing global tax compliance, working with a seller of record solution can simplify how duties and taxes are handled across markets
How Ecommerce Brands Can Reduce Import Costs?
You can’t eliminate import duties and taxes entirely since those are set by governments but you can take steps to reduce how much you pay and avoid unnecessary costs.
Get product classification right. Every shipped item is assigned an HS code that determines its duty rate. A misclassified product — even unintentionally — can mean paying more duty than necessary, or facing a customs delay while the classification gets sorted out.
Use trade agreements where you qualify. Depending on where products are manufactured, shipped from, and shipped to, you may qualify for reduced or zero-duty rates — but only with proper documentation and an accurately declared country of origin.
Reconsider your fulfillment strategy. Shipping every order across borders from one location gets expensive fast. Storing inventory closer to customers — via regional warehouses or a local 3PL — can avoid import duties on individual shipments entirely.
Recover duties already paid, where eligible. Duty drawback lets brands reclaim a portion of duties paid on goods that are later exported, destroyed, or used in the production of exported goods. See our duty drawback guide for what qualifies.
Don’t over-rely on de minimis thresholds. A de minimis threshold is the shipment value below which duties and taxes may not apply — historically a lever brands used to reduce costs by keeping orders under the limit. That lever is weakening: the US has removed its de minimis advantage for cross-border flows, the EU removed its €150 duty exemption, and enforcement on low-value imports is tightening globally. More shipments are now subject to full customs charges regardless of value, so this isn’t a strategy to build a long-term cost model around.
For the full picture of ongoing EU customs changes, see our EU Customs Changes guide.
Taken together, these strategies don’t just reduce costs but they make your cross-border operations more efficient and predictable. For ecommerce brands, that’s the real advantage: fewer surprises, better margins, and a smoother experience for customers.
How Can Brands Improve Pricing Transparency?
In cross-border ecommerce, pricing transparency isn’t just a nice-to-have, it’s a competitive advantage. When customers shop internationally, they’re already navigating longer shipping times and unfamiliar brands. The last thing they want is uncertainty around the final cost of their purchase.
One of the most effective ways to build trust is by showing duties and taxes at checkout, rather than leaving them as an unknown. When customers can see the full cost upfront, they’re far more confident completing their purchase.
Many brands take this a step further by offering all-inclusive pricing through a DDP (Delivered Duties Paid) model. In this setup, everything—product cost, shipping, duties, and taxes—is bundled into a single, clear price. From the customer’s perspective, it feels no different than ordering domestically.
Clear communication also plays a key role. Your shipping and returns policies should explicitly explain whether duties and taxes are included, and what customers can expect at delivery. Even if you’re not yet offering DDP, being upfront about potential charges is far better than leaving customers in the dark.
What brands should avoid at all costs is the “surprise fee” experience. Unexpected charges at delivery are one of the fastest ways to lose customer trust and damage your brand reputation.
Ultimately, customers are much more likely to convert and come back when they know exactly what they’re paying from the start.
For brands managing returns, it’s also important to understand how to recover costs especially since duties and taxes may be reclaimable. Learn more in our guide to recovering duties and taxes on international returns.
How Passport Can Help
Passport’s software calculates and collects customs duties, taxes, and additional import fees at checkout, giving customers a clear, upfront cost breakdown and eliminating surprise charges at delivery.
With Passport, brands can:
- Display fully landed cost at checkout, including duties and taxes
- Ensure accurate, real-time import duty calculations
- Reduce the risk of customs delays and unexpected import fees
- Maintain control over pricing, margins, and customer experience
Ready to simplify customs duties and taxes and create a seamless international shopping experience? Reach out to our team to get started.
Authored by Thomas Taggart
Head of Global Trade | Passport
Thomas Taggart is a cross-border commerce leader with more than 20 years of experience in international shipping and regulatory affairs. As the Head of Global Trade, Thomas helps ecommerce brands go global by simplifying international trade, tax, and product compliance issues. Prior to Passport, he brought international shipping solutions to market through multiple roles in UPS’s product development organization.
Frequently Asked Questions
What’s the difference between customs duties, taxes, and fees?
Duties are based on the product’s classification (its HS code); taxes like VAT or GST are based on the total shipment value; fees are additional charges from carriers or brokers for clearing the shipment. Together, they make up total landed cost.
How is customs duty calculated?
Customs duty is calculated using the product’s HS code, its customs value, and its country of origin. The HS code sets the rate, the value determines the amount that rate applies to, and the country of origin can raise, lower, or leave that rate unchanged.
Who pays customs duties and taxes — the merchant or the customer?
It depends on the shipping model. Under DDU (Delivered Duties Unpaid), the customer pays at delivery. Under DDP (Delivered Duties Paid), the merchant collects and remits duties and taxes upfront at checkout.
Is customs duty the same as import tax?
No. Customs duty is based on the product type; import taxes like VAT or GST are based on the total value of the shipment.
What happens if a product is misclassified with the wrong HS code?
Misclassification typically results in either overpaying duty (if the code implies a higher rate than the correct one) or a customs delay while the shipment’s classification is corrected — sometimes both.
Can duties already paid be recovered?
In some cases, yes. Duty drawback allows brands to reclaim duties paid on goods that are later exported, destroyed, or used in producing an exported product. Eligibility and documentation requirements vary by program.
Does the de minimis exemption still help reduce import costs in 2026?
Less than it used to. The US has removed its de minimis advantage for cross-border shipments, and the EU is phasing out its €150 duty exemption, with other markets tightening enforcement on low-value imports as well. It’s no longer a dependable long-term cost strategy.
Should ecommerce brands use DDP or DDU?
Most brands moving toward international scale choose DDP, since it removes the risk of refused deliveries and surprise fees that come with DDU. DDU requires less upfront setup but shifts that risk onto the customer relationship at delivery.