A supplier may quote you $10,000 for goods, but that does not mean your import will cost only $10,000 by the time it reaches your warehouse in Nigeria.
Importers also need to account for freight, insurance, Customs duty, taxes, levies, port charges, clearing fees and inland transportation.
One of the biggest mistakes new importers make is calculating profitability using only the supplier’s invoice and shipping cost.
Before placing an order, you should estimate the landed cost of the goods.
This guide explains how Nigerian import duty is calculated and how to build a more realistic estimate of your total import costs.
Import Duty Is Based on Your HS Code
The first thing to determine is the correct Harmonised System, or HS, code for your product.
Every product imported into Nigeria is classified under a tariff code.
That code determines:
- Import duty rate
- VAT treatment
- Additional levies
- Import restrictions
- Regulatory permits
- Excise obligations where applicable
Nigeria operates under the ECOWAS Common External Tariff framework.
Common tariff bands include:
- 0%
- 5%
- 10%
- 20%
- 35%
However, you should never assume the rate based simply on the product name.
The Nigeria Customs Service provides an official CET tariff reference that importers can use to check classifications and current duty rates.
The 2026 tariff also contains Nigeria-specific adjustments and Import Adjustment Tax measures for certain products.
Start With the Customs Value
Import duty is generally calculated from the Customs value of the goods.
For most straightforward commercial transactions, this begins with the transaction value and includes transportation, handling and insurance costs required to bring the goods to the Nigerian point of importation.
In simple terms, importers often work with the CIF value:
CIF = Cost of Goods + Insurance + Freight
For example:
- Goods: ₦10,000,000
- Freight: ₦1,500,000
- Insurance: ₦100,000
Your estimated CIF value would be:
₦11,600,000
The Nigeria Customs Service’s customs valuation guide explains that transport to the Nigerian port or place of importation, relevant handling and insurance may form part of the Customs value.
Customs can also question a declared value where there are doubts about the accuracy of the documents submitted.
Convert the Value Using the Applicable Exchange Rate
If your supplier invoice is in dollars, euros, pounds or another foreign currency, the Customs value must be converted into naira.
Do not simply use the exchange rate you found on Google or the rate your bank used when you paid the supplier.
The Customs assessment uses the applicable official Customs exchange rate at the relevant time.
The Nigeria Trade Information Portal provides access to trade information, exchange-rate resources and a Customs duty calculator.
Because exchange rates can move between the time you order the goods and the time Customs assesses them, it is wise to include an exchange-rate buffer when budgeting.
Calculate the Basic Import Duty
Once you have the CIF value and the correct duty rate, the basic calculation is:
Import Duty = CIF Value × Duty Rate
Suppose your CIF value is:
₦11,600,000
And your product attracts:
20% import duty
The basic import duty would be:
₦11,600,000 × 20% = ₦2,320,000
But this is not your total Customs bill.
Several other charges may apply.
Surcharge
A Customs surcharge may be calculated as a percentage of the basic import duty.
A commonly applied rate is:
7% of Import Duty
Using the example above:
₦2,320,000 × 7% = ₦162,400
This surcharge is calculated from the import duty, not directly from the CIF value.
ETLS Levy
Imports may also attract the ECOWAS Trade Liberalisation Scheme levy.
The commonly applicable calculation is:
0.5% of CIF value
Using our ₦11,600,000 CIF example:
₦11,600,000 × 0.5% = ₦58,000
The levy applies according to the relevant rules and origin of the goods.
CISS Charge
Another cost importers commonly encounter is the Comprehensive Import Supervision Scheme charge.
This is generally calculated as:
1% of FOB value
FOB means the value of the goods before international freight and insurance are added.
If the FOB value of your shipment is ₦10,000,000:
₦10,000,000 × 1% = ₦100,000
This demonstrates why import calculations require both the FOB and CIF figures.
Do Not Forget VAT
Imported goods can also attract Value Added Tax.
Nigeria’s standard VAT rate is generally 7.5%, although individual goods may have different VAT treatment or exemptions.
VAT on imports is not simply calculated by multiplying the supplier’s invoice by 7.5%.
The tax base can incorporate the Customs value and applicable Customs duties and charges.
That means VAT is calculated after some of the other import costs have already been added.
The official Customs duty calculator can help estimate the VAT, duty and applicable levies for a specific HS code.
Your Product May Have Additional Levies
Not every import stops with duty, surcharge, ETLS, CISS and VAT.
Depending on the HS code, additional charges may apply.
The official calculator includes possible lines for:
- Import duty
- VAT
- ETLS
- Surcharge
- NAC
- Fiscal charges
- Product-specific levies
Nigeria’s 2026 Fiscal Policy Measures also revised the National List, Import Adjustment Tax list, excise schedules and other tariff measures.
This is why two products with the same CIF value may have very different Customs bills.
Always run the exact HS code before budgeting.
Example of an Estimated Customs Cost
Suppose your figures are:
FOB value: ₦10,000,000
Freight: ₦1,500,000
Insurance: ₦100,000
Your CIF becomes:
₦11,600,000
If the product attracts 20% duty:
Import duty: ₦2,320,000
Then estimated additional charges could include:
7% surcharge: ₦162,400
0.5% ETLS: ₦58,000
1% CISS on FOB: ₦100,000
VAT and any additional product-specific levies would then need to be added according to the applicable tariff treatment.
So the importer who budgets only ₦2.32 million for Customs because the product has a “20% duty rate” will significantly underestimate the amount required.
The duty percentage is only one part of the Customs assessment.
Customs Charges Are Not Your Total Import Cost
Even after calculating Customs duty and taxes, you still do not have your complete landed cost.
Your import budget may also need to include:
- Form M-related banking costs
- Marine insurance
- Freight forwarding
- SONCAP or other certification
- Shipping-line local charges
- Terminal handling
- Documentation charges
- Customs-agent fees
- Port storage
- Demurrage
- Container detention
- Examination charges
- Inland transportation
- Warehousing
These costs can be substantial, particularly where cargo is delayed.
A Better Way to Calculate Landed Cost
Instead of asking only:
“How much is the import duty?”
Calculate:
**Product Cost
- International Freight
- Insurance
- Customs Duty
- Taxes and Levies
- Regulatory Costs
- Port and Shipping Charges
- Clearing Fees
- Inland Transportation
= Total Landed Cost**
Then calculate the landed cost per unit.
For example, if your complete import costs ₦20 million and the shipment contains 10,000 units:
₦20,000,000 ÷ 10,000 = ₦2,000 landed cost per unit
That ₦2,000 figure is much more useful when setting your selling price than the supplier’s original unit price.
Common Import-Cost Mistakes
Using the Wrong HS Code
A wrong tariff classification can produce the wrong duty estimate and may result in additional assessment or penalties.
Calculating Duty on FOB Only
Basic import duty is normally linked to Customs value, which generally incorporates freight and insurance rather than just the supplier’s factory price.
Forgetting Additional Levies
The headline duty rate is not your complete Customs bill.
Ignoring Exchange-Rate Changes
A change in the Customs exchange rate can materially change your naira assessment.
Ignoring Port Costs
Storage, demurrage and detention can destroy an otherwise profitable import.
Trusting an Old Duty Rate
Nigeria’s tariff schedules and fiscal policy measures can change.
Check the current tariff rather than relying on a rate from an old clearing document or online article.
Use the Official Duty Calculator Before Shipping
Before placing a large order, check the exact HS classification and use Nigeria’s official duty calculator.
The calculator allows you to enter details such as:
- HS code
- Currency
- Cost price
- Freight
- Insurance
It then estimates the applicable duty, taxes and levies.
Treat the result as a planning tool rather than a guarantee of the final assessment, because classification, valuation, exchange rates and fiscal measures can affect the eventual amount.
Final Thoughts
Estimating import costs in Nigeria requires more than finding the duty percentage for your product.
Start with the correct HS code. Calculate the CIF value. Apply the appropriate Customs exchange rate and tariff. Then add VAT, surcharge, ETLS, CISS and any product-specific levies.
After that, add the costs Customs does not capture: shipping-line charges, terminal handling, regulatory certificates, clearing fees, transport and possible storage or demurrage.
The number that matters most to your business is not the supplier’s price or even the Customs duty.
It is your total landed cost.
Calculate that before you place the order, and you will have a much clearer idea of whether the import can actually be profitable.