Complete guide to Bolivia's NIT (Número de Identificación Tributaria) — format, digit structure, registration requirements for foreigners, NIT verification, IVA rules, and SFE electronic invoicing compliance.
Complete guide to Colombia's NIT tax identification number — 9+1 digit format, mod-11 check digit calculation, RUT registration for foreigners, factura electrónica penalties, and PES obligations for digital service providers.
Complete guide to El Salvador's NIT (tax ID), NRC (IVA contributor number) and DUI unification — formats, registration, DTE e-invoicing, and withholding rules for foreign businesses.
Complete guide to Guatemala's NIT and CUI tax identification numbers — 8-digit and 13-digit formats, the 2025 NIT-CUI unification, FEL e-invoicing obligations, and registration for foreigners.