Documentation on Bulgaria

Complete guide to Bulgaria's tax identification numbers — EGN (10-digit personal number), EIK/BULSTAT (9 or 13-digit business number), and VAT number formats. Covers checksum validation, registration rules, and withholding tax obligations.

How to verify a Bulgarian VAT number using the NRA portal or EU VIES. Covers Bulgarian VAT format, EIK vs VAT number distinction, deregistration, Art. 151a cash reporting, and the NRA e-store registry.