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DutyMath is an estimator. These terms say plainly what that means, what it does not mean, and where the binding figures come from instead.
Estimates, not assessments. Every result on this site is an estimate worked out from the published rates cited beside it. The binding charge on an imported car is the assessment issued by the Nigeria Customs Service on its own valuation of that car. Do not commit money on an estimate here that you could not survive being wrong; the calculators are built to be checked against an assessment or an agent's quote, and the methodology page exists to make that check possible.
No affiliation. DutyMath is independent. It is not the Nigeria Customs Service, the Federal Ministry of Finance, the National Automotive Council, any terminal operator or any clearing agency, and it is not endorsed by or affiliated with any of them. Names of agencies and programmes appear only to cite the sources of the rates.
Rates move. Vehicle import charges in Nigeria changed twice in 2026 and can change again by circular. Every rate on this site carries the date it was checked; a fiscal measure issued after that date supersedes what is printed here until the site is updated. The rates page is the current position, check date included.
Flagged figures. Some figures are published with a status flag — REPORTED, CONTESTED, UNVERIFIED — because that is the honest state of their evidence. A flagged figure may be wrong; the flag is part of the figure, and relying on a flagged figure without the confirmation its flag calls for (an assessment, an agent, a sighted circular) is a decision the site has done its part to warn against.
Market charges. Port, terminal, shipping-line and agent figures are market ranges from the sources cited, not tariffs, and are always editable in the tools. Your own quotes govern.