What Documents Does Customs Need From Me?

When your goods arrive, your customs agent needs a complete and consistent document pack to declare them. If anything is missing or does not match, clearance stops. So, what documents does Customs need from you, the importer, and how does Customs actually check them?

This guide focuses on the clearance stage: what you must provide, why Customs needs it, and the checks each document goes through. For the full import journey from supplier to delivery, see what documents you need to import goods into Nigeria.

Key takeaways

• Customs needs proof of who you are: CAC registration, TIN and platform registration.
• The core clearance pack is Form M, PAAR, invoice, packing list, B/L or AWB, declaration and payment proof.
• Customs may also ask for proof of payment, catalogues and certificates of origin.
• Every key field must match across all documents.

Part 1: Documents that prove who you are

Before any shipment, Customs and partner agencies need to know the importer.

Company registration (CAC)

Certificate of incorporation or business name registration. The name must match exactly across Form M, the bill of lading and the declaration.

Tax Identification Number (TIN)

Your TIN is required on import documentation and links your imports to your tax records.

Registration on trade platforms

Importers and agents must be set up on the relevant systems, including Nigeria Customs' B'Odogwu platform and, since March 2026, the National Single Window, where more than 10,800 importers and agents had registered by August 2026.

Common problem: goods consigned to an individual's name while Form M is in a company name, or small spelling differences like "Ltd" vs "Limited".

Part 2: The core clearance documents

1. Form M (with approval/reference number)

Why Customs needs it: it is the pre-import record of what you intend to import, its value and payment method. What Customs checks: importer details, goods description, HS code, value, supplier and whether it was valid before shipment.

2. PAAR (Pre-Arrival Assessment Report)

Why: Customs' own pre-arrival assessment of classification and value, linked to your Form M. What Customs checks: consistency between PAAR, Form M and your declaration.

3. Commercial invoice

Why: proves the transaction value, the basis for duty. What Customs checks: price, quantity, currency, Incoterm, supplier details, and whether values look realistic against reference prices.

4. Packing list

Why: shows how goods are packed and what each package contains. What Customs checks: package count and weight against the manifest and bill of lading; used to plan examinations.

5. Bill of lading or air waybill

Why: proves carriage and links your goods to the carrier's manifest. What Customs checks: consignee name, container and seal numbers, weight and description against the manifest.

6. Customs declaration (Single Goods Declaration)

Why: your formal legal declaration of the goods, filed by a licensed agent. What Customs checks: everything above, plus correct duty calculation.

7. Proof of duty payment

Why: release cannot happen until duty, levies and VAT are paid.

Part 3: Supporting documents Customs may request

• Certificate of origin, especially to claim ECOWAS origin benefits.
• Insurance certificate, linked to Form M.
• Proof of payment to supplier, bank transfer records to support transaction value.
• Sales contract or purchase order.
• Product catalogues, technical data sheets or brochures, to confirm classification.
• Duty exemption or waiver certificates, if claiming relief.
• Previous import records, for valuation comparison.

Part 4: Regulatory permits and certificates

Depending on the goods:

• SONCAP certificate from the Standards Organisation of Nigeria.
• NAFDAC permit from NAFDAC.
• NAQS phytosanitary/veterinary clearance from NAQS.
• NESREA permit for some environmentally sensitive items.
• End-user certificate for restricted security items.
• Vehicle documents, VIN details and title documents for vehicles.

Many of these are now processed through the National Single Window, which connects Customs with SON, NAFDAC, NAQS, NESREA, NPA and FAAN.

Document consistency checklist

Before your agent files, check that these fields match across Form M, PAAR, invoice, packing list, B/L/AWB and declaration:

Common document problems that trigger queries

• Supplier sends a final invoice with a different value from the proforma used for Form M.
• Goods described generally on B/L but specifically on invoice.
• Weight on B/L very different from packing list.
• HS code on Form M differs from agent's declaration.
• Permit issued for a different product model or quantity.
• Certificate of origin missing or inconsistent.

These lead to reassessment, examination or holds. See why is my shipment held at customs.

How long should you keep customs documents?

Keep full import records for several years. Customs can carry out post-clearance audits under the Nigeria Customs Service Act 2023, and your tax records depend on them too. Store digital copies securely and organise them by shipment.

How digital platforms change document checks

Customs documentation is increasingly electronic. Through B'Odogwu, manifests, Form M data, declarations and payments are linked, so inconsistencies are easier for the system to spot automatically. Through the National Single Window, agencies such as SON and NAFDAC can issue and verify permits in a connected platform.

For importers, this means:

• Data typed into one system is compared with data in others.
• Small inconsistencies are more likely to be flagged.
• Clean data moves faster than ever.
• Uploading clear, legible scans of supporting documents saves time.

Frequently asked questions

Can Customs clear my goods with copies of documents?

Most processing is electronic, but Customs can request originals or certified copies, especially for permits and certificates.

What happens if my invoice value is different from Form M?

Customs will query the discrepancy. Amend Form M where possible before arrival, and keep proof of the correct value.

Do I need a certificate of origin for imports into Nigeria?

It is often required or requested, and is essential when claiming preferential treatment such as ECOWAS origin.

Who submits documents to Customs?

A licensed customs agent files the declaration on your behalf using the documents you and your supplier provide.

A complete document pack, every time

DE-BLINGS reviews every document for consistency before your cargo arrives, so Customs sees a clean declaration from day one. Explore our import clearance and customs clearance services, or book a free consultation.