FIRS

Understanding the FIRS E-Invoicing Mandate The FIRS e-invoicing system requires that all regulated invoices—especially for B2B and B2G transactions—be cleared by FIRS before issuance. Each invoice must receive: Unique Invoice Reference Number (IRN) Cryptographic Stamp Identifier (CSID) This ensures authenticity, prevents fraud, and enables real-time tax reporting. QuickBooks Online Integration Read more