Honduras hasn't adopted the real-time XML clearance model that Guatemala, Costa Rica, and El Salvador now run. Instead, the country still relies on the CAI system — and companies rolling out Business Central Honduras need to understand that model on its own terms, not as a simplified version of its neighbors.
The SAR has piloted an advanced electronic signature and is moving toward full electronic invoicing, but as of this writing, CAI remains the operating framework most companies must follow.
How the CAI System Works
Under the Servicio de Administración de Rentas (SAR), every taxpayer must request a CAI (Clave de Autorización de Impresión) before issuing invoices. The CAI authorizes a specific range of correlative numbers, tied to an expiration date — typically one year. Every invoice within that range must display the CAI, the authorized correlative, and the taxpayer's RTN (Registro Tributario Nacional). An invoice issued without a valid CAI has no fiscal standing at all, and neither does one issued after the CAI's expiration date, even if the correlative range still has numbers left.
Autoimpresor vs. Imprenta Certificada
Companies can print invoices through a certified printer (imprenta certificada) or generate them directly from their own system as an authorized self-printer (autoimpresor). For a Business Central Honduras environment, autoimpresor status is what makes it possible to generate compliant invoices directly from the ERP instead of routing every document through a third-party print shop.
Where This Shows Up in Business Central Honduras Projects
For implementation teams, several configuration points recur:
- Registering as an autoimpresor and requesting CAI ranges through the SAR's Oficina Virtual
- Tracking each CAI's expiration date and correlative range before they run out
- Applying ISV (Impuesto Sobre Ventas) correctly at 15% or 18%, depending on the good or service
- Segregating exempt transactions and exoneración certificates for registered institutions
- Registering tax withholdings (retenciones de ISV) directly in payment journals
- Keeping a minimum five-year archive of issued invoices, as the SAR requires
Common Challenges in Honduras Implementations
Most issues we see trace back to a handful of recurring gaps:
- Letting a CAI expire mid-operation, which halts invoicing until a new one is authorized
- Issuing an invoice outside its authorized correlative range by mistake
- Missing required formatting details — font size, RTN placement — that the SAR treats as infractions
- Manually tracking multiple CAI ranges across branches or cash registers without a system doing it automatically
- Assuming Honduras will soon mirror Guatemala's FEL model exactly, rather than tracking SAR's own pace
None of these mistakes are dramatic individually. Together, though, they're exactly what turns SAR compliance into a recurring administrative burden instead of a one-time setup.
Why a Dedicated Localization Matters for Business Central Honduras
A proper Honduras localization tracks CAI ranges and expiration dates automatically, applies ISV correctly across rates and exemptions, and manages withholdings directly in payment processing. Built as an extension, it does this without modifying Business Central's core — and it's positioned to adapt if and when the SAR completes its shift toward full electronic invoicing, without requiring a separate system replacement later.
How LLB Solutions Supports Business Central Honduras
LLB Solutions' for Microsoft Dynamics 365 Business Central covers SAR withholdings, fiscal reports, official books, and tax declarations — built as an AppSource-certified extension aligned with SAR's current accounting and tax standards.
Final Thoughts
Honduras's CAI framework is straightforward on paper but unforgiving of small mistakes — an expired code or a correlative out of range stops invoicing immediately. Companies that automate CAI tracking inside their Business Central Honduras environment avoid that risk, and they'll be ready when SAR's next phase of electronic invoicing arrives.
For Microsoft partners, it's worth checking in on Honduras clients' CAI status periodically rather than only at implementation — expirations have a way of arriving quietly.
See how LLB Solutions' Honduras Localization fits your Business Central project —