16 May 2026· 7 min read
HS codes and Nigerian customs duty: a plain guide
What an HS code is, why it decides your duty, and how to estimate the landed cost of a China shipment before you commit to the order.
The difference between a profitable import and a loss is often decided before the goods leave China, in a number most new importers never check: the HS code. It determines your duty rate, and your duty rate determines your landed cost. Guess it wrong and your margin disappears at the port.
What an HS code is
The Harmonised System is an international classification of traded goods. Every product has a code, and Nigeria, like every member country, uses it to set the duty and levies on imports. The first six digits are the same worldwide; countries add further digits for their own tariff lines.
In practice, your clearing agent will assign the code on your declaration, but you should understand it, because two similar-sounding products can sit in different codes with very different duty rates.
Why it decides your cost
Nigerian import charges are built on the customs value of the goods, and the percentages depend on the classification:
- Import duty, a percentage of the customs value, set by the tariff line.
- Levies and additional charges that apply to certain categories.
- VAT, calculated on the duty-inclusive value.
- Other port and processing charges.
Because these stack on value, not on weight or freight mode, knowing the duty rate for your specific goods is the single most useful number for working out whether an import is worth doing.
Estimate your landed cost before you commit
A simple way to sanity-check an order before you place it:
- Take the cost of goods in RMB and convert to Naira at the day's rate.
- Add the freight and forwarding estimate from your forwarder.
- Add duty, levies and VAT based on the customs value and your goods' classification.
- Add clearing, port and local transport to your warehouse.
The total is your landed cost. Divide by units to get a real per-unit cost, then compare to the price you can actually sell at. If the margin is thin before you account for defects and returns, rethink the order.
The importers who lose money are usually the ones who compared the China price to the sale price and forgot everything in between.
Get the classification right
A few principles:
- Describe the goods accurately to your agent. The code follows what the product actually is, its material, its function, its state. Vague descriptions invite the wrong code.
- Do not chase a lower duty code that does not fit. A misclassification that under-declares duty is a problem waiting at inspection, with penalties attached.
- Keep your supplier's invoice and specification. They support the declared value and classification if questions arise.
The documents customs will expect
Your clearing agent will guide you, but a typical import file includes the commercial invoice, the packing list, the bill of lading or airway bill, and the relevant import documentation. Your payment receipt for the goods is part of the story that supports the declared value, which is one more reason to keep a clean record of what you paid and to whom.
Where the payment trail fits
When you settle your supplier through a trade-facilitation service, you receive a PDF receipt showing the RMB amount, the locked rate, the recipient and a unique reference. Filed alongside the supplier's commercial invoice, it helps demonstrate what the goods actually cost, which supports an honest customs value.
So before you place an order, price the whole journey, not just the goods. When you are ready to pay the supplier, you can make a request and keep the receipt with your shipment file. Knowing your HS code and your real landed cost is what turns importing from a gamble into a calculation.
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