Introduction
The Honduran tax authority, Servicio de Administración de Rentas (SAR), enforces a strict invoicing regime involving pre-authorized sequences (CAI). For international businesses, particularly in SaaS, data precision is vital. Non-compliance—failing to capture the valid Registro Tributario Nacional (RTN)—means your client cannot use the invoice for tax credit, leading to payment refusals. Conversely, accurate ID validation ensures you enable your clients’ tax compliance, protecting your profit margins and securing stable B2B relationships. This expert guide clarifies the Honduran TIN system, ensuring your onboarding is built for financial success.
