Business Context: Colombia's DIAN mandates electronic invoicing for all businesses, but small retailers struggle with complex compliance — XML validation, digital signatures, consecutive numbering. Non-compliance triggers fines starting at 5% of invoice value.
The Solution: FacturApp abstracts the entire DIAN compliance layer. Shop owners create invoices with a few taps; the system handles taxes (IVA, ICA, ReteFuente), generates XML, signs digitally, submits to DIAN, and delivers a PDF in under 3 seconds.
Technical Architecture
DIAN Integration: Full UBL 2.1 standard. Automated XML with X.509 signing, consecutive numbering validation, and real-time submission with retry logic.
Tax Engine: Configurable rules per product category and municipality. Automatic IVA (19%), ICA, ReteFuente, ReteICA calculation. Colombian fiscal rounding (50 COP).
PDF & Delivery: Server-side generation with DIAN verification QR. Automated delivery via email and WhatsApp. Full-text search archive.
Multi-Tenant B2B: Isolated tenants with custom branding, tax configuration, and user roles (owner, cashier, accountant).
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