The Federal Inland Revenue Service (FIRS) is changing how businesses issue invoices and report Value Added Tax (VAT). The new mandatory electronic invoicing (e-invoicing) system introduced by the FIRS Public Notice issued on 9 July 2025, officially announced the commencement of the National E-Invoicing Regime after the pilot phase held in November 2024. The system connects business accounting software directly to FIRS, thus replacing traditional paper-based invoicing to a real-time digital process. This new e-invoicing system is called the FIRS Merchant Buyer Solution (FIRS MBS).
This guide explains what this means for businesses in practical terms.