Compliance
Nigeria E-Invoicing Regulations
Vendex ensures compliance with:
NITDA: National Information Technology Development Agency
FIRS: Federal Inland Revenue Service
National E-Invoicing Guideline 2025
Key Compliance Requirements:
Digital Signatures: All invoices must be cryptographically signed
Invoice Reference Number (IRN): Unique identifier following standardized format
QR Codes: Scannable verification codes on all invoices
Real-time Reporting: Invoice transmission to FIRS within 24 hours
Structured Data: Invoices must follow approved UBL 2.1 schema
HSN Codes: Products/services must be classified correctly
Audit Trail: 10-year retention of all invoice data
HSN and Service Codes
Harmonized System of Nomenclature (HSN) codes are internationally standardized product classification codes used for tax classification, customs procedures, trade statistics, and tariff determination.
HSN Code Structure:
6-8 digits total
First 2 digits: Chapter (product category)
Next 2 digits: Heading (product sub-category)
Last 2-4 digits: Specific product
Finding Correct Codes:
Vendex automatically fetches approved codes when creating products/services. Select 'Product/Service Code' dropdown, search by keyword or browse categories. System filters by FIRS-approved codes. Select applicable code.
Vendex stores codes with your products, so you can create product once with correct code and reuse in future invoices automatically.
Digital Signatures and QR Codes
Digital Signature Process:
Key Generation: FIRS provides cryptographic key pair (public key for verification, private key for signing)
Invoice Signing: Vendex hashes invoice data, applies private key signature, attaches signature to invoice
Certificate Validation: FIRS verifies signature using public key, confirms invoice not tampered
QR Code Generation:
Vendex automatically generates QR codes containing Invoice Reference Number (IRN), issue date and time, supplier TIN, customer TIN, total amount, tax amount, and digital signature hash.
QR Code Usage:
Printed on invoice PDF
Scannable by FIRS mobile app
Instant verification of authenticity
Links to FIRS invoice database showing transmission status
Audit and Compliance Reporting
Vendex maintains comprehensive logs of all invoice creation events, modifications and status changes, FIRS transmission attempts, success/failure notifications, user actions and timestamps. Retention period is 10 years (regulatory requirement).
Compliance Reports
Generate reports for tax authorities:
Navigate to Dashboard > Reports
Select report type: VAT returns, Invoice transmission log, Tax summary, Fiscalization report
Choose date range
Click "Generate Report" and download in required format
Document Manager
Vendex has a robust legal document management system that helps businesses store, retrieve and update vital trade documents to meet any specified compliance requirements.
Sample Documents: Document templates our legal team developed just for you.
Incorporation Documents: Tax documents, company registration.
Licensing Documents: HSE approvals, licenses, insurance.
Agreement Documents: Sale purchase agreements, service level agreements.
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