What customs duty means
Customs duty is a tax on importation.
It is charged on the customs value of the goods, which is broadly the transaction value plus the cost of insurance and freight to the port of entry, and it is assessed at a rate determined by how the goods are classified.
Classification is done under the Harmonised System, which assigns a code to every category of goods, and Nigeria applies the ECOWAS Common External Tariff. The code decides the rate, and the difference between two plausible codes for the same item can be substantial.
Duty is collected by the Nigeria Customs Service as part of clearance, and it is not the only charge. Levies and administrative charges are assessed alongside it, and value added tax applies on imports as well.
So the landed cost of an import is the invoice, plus freight and insurance, plus duty, plus the levies, plus VAT, plus clearing costs, plus whatever demurrage the delay produces.
How it is used
The importer's sequence is documentary before it is financial.
A Form M is opened through an authorised dealer bank before shipment, registering the transaction.
The goods are shipped, and the supplier's documents follow: commercial invoice, packing list and bill of lading.
A Pre Arrival Assessment Report is issued, setting out the classification and the assessed duty for customs purposes.
On arrival, the entry is made, duty and charges are paid, examination takes place where required, and the goods are released.
Classification is where an importer's attention pays. The HS code determines the rate, and getting it wrong in either direction is a problem: too low invites reassessment, penalties and delay, and too high means paying duty that was never owed.
The prohibition and restriction lists are the second point. Certain goods are prohibited from importation and others require permits from specific agencies. Establishing that before ordering is considerably cheaper than establishing it when a container has arrived.
Key features
- Charged on the customs value of imported goods
- Rate determined by classification under the Harmonised System
- Nigeria applies the ECOWAS Common External Tariff
- Collected by the Nigeria Customs Service during clearance
- Levies, administrative charges and import VAT are charged alongside
- Prohibited and restricted goods lists apply separately
How this works in Nigeria
Three practical realities shape Nigerian importing.
The first is that the landed cost is much higher than the duty rate suggests. An importer modelling on the tariff percentage alone will be wrong by a wide margin once levies, VAT, clearing agent fees, terminal charges and demurrage are included. Model the total.
The second is that documentation must reconcile. The consignee name, the description, the quantity and the value have to match across the Form M, the invoice, the bill of lading and the entry. A mismatch produces a query, a query produces delay, and delay produces demurrage charged daily by the shipping line and storage charged by the terminal.
The third is classification disputes. Where customs disagrees with the importer's classification, the goods are held while it is resolved, and the importer pays for that time. Obtaining a considered classification before shipment, with professional input where the goods are borderline, is far cheaper than arguing at the port.
Misdeclaration is treated seriously. Understating value or misdescribing goods to reduce duty exposes an importer to penalties, seizure and prosecution, and it is not a grey area.
Where an importer believes an assessment is wrong, there are internal review routes and, ultimately, judicial ones. Paying under protest to release the goods and pursuing the dispute afterwards is often the commercially sensible order, because demurrage does not pause while a disagreement is resolved.
Customs duty vs excise duty vs import VAT
Three charges on imported goods, arising at different points and for different reasons.
Customs duty is charged on importation, assessed on customs value at the tariff rate for the classification. It applies to goods crossing the border.
Excise duty applies to specified goods, charged on manufacture domestically and at the equivalent point on imports so that local producers are not disadvantaged. It applies only to the excisable list, such as alcoholic beverages and tobacco.
Import VAT is value added tax charged on the importation of goods, calculated on a base that includes the duty. A registered business can generally recover it as input VAT against its output VAT, which duty and excise are not.
That last distinction matters commercially. VAT flows through a registered business. Duty and excise are costs that stay in the price.
Limits and risks
Classification is genuinely uncertain for some goods, and reasonable people disagree, which produces disputes the importer funds through delay.
Rates and lists also change, including through fiscal policy measures and tariff reviews, so a figure from last year may be wrong.
The prohibition and restriction lists have been revised repeatedly, and goods that were importable become restricted.
And valuation disputes arise where customs does not accept the transaction value, substituting its own basis, which an importer must then challenge.
Every one of those is resolved on the importer's time, with charges accruing, which is the structural reason Nigerian importing rewards preparation over reaction.
Worth knowing
Confirm the HS classification and the total landed cost before you order, not after the container arrives. Nigerian importers model on the duty percentage, omit the levies, VAT, terminal charges and demurrage, and discover the real cost when the margin has already gone.
Questions people ask
How is Nigerian customs duty calculated?
On the customs value of the goods, broadly the transaction value plus insurance and freight to the port, at the rate determined by the Harmonised System classification under the ECOWAS Common External Tariff.
What else do I pay besides duty?
Levies and administrative charges assessed alongside duty, value added tax on the import, clearing agent fees, terminal charges, and any demurrage or storage the delay produces.
Why does classification matter so much?
Because the HS code determines the rate, and two plausible codes for the same item can carry very different rates. Getting it wrong invites reassessment and delay in one direction and overpayment in the other.
What happens if I misdeclare?
Misdeclaring value or description to reduce duty exposes an importer to penalties, seizure and prosecution. It is not treated as a grey area.
Can I dispute an assessment?
There are review routes and ultimately judicial ones. Because demurrage does not pause while a dispute runs, paying under protest to release the goods and pursuing the disagreement afterwards is often the commercially sensible order.
Is import VAT recoverable?
A registered business can generally recover import VAT as input VAT against its output VAT. Customs duty and excise duty are not recoverable and stay in the cost of the goods.